https://www.holographyforum.org/w/index.php?title=Different_kinds_of_holograms&feed=atom&action=historyDifferent kinds of holograms - Revision history2024-03-29T00:42:42ZRevision history for this page on the wikiMediaWiki 1.31.0https://www.holographyforum.org/w/index.php?title=Different_kinds_of_holograms&diff=1649&oldid=prevJsfisher: 1 revision2013-05-12T04:08:00Z<p>1 revision</p>
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</td></tr></table>Jsfisherhttps://www.holographyforum.org/w/index.php?title=Different_kinds_of_holograms&diff=274&oldid=prevJsfisher: 1 revision: Base recovered wiki articles2013-05-12T02:51:36Z<p>1 revision: Base recovered wiki articles</p>
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</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>
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<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>(For details and setup examples, see the [[Holography_Technology]] page<del class="diffchange diffchange-inline">.) (For a more technical description see [[Holograms]]</del>.)  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>(For details and setup examples, see the [[Holography_Technology]] page.)</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">===Comparison=== </del></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">(For a more technical description see [[Holograms]].)</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">Single Beam Reflection</del>===  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">Comparison</ins>===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">Also called a Denisyuk Hologram this is the most common first hologram. It is fairly easy to set up and can be viewed in white light. This type of hologram is one of the least expensive as there are minimal optics and the stability requirement can be minimized by touching the plate to the object. </del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===Single Beam <del class="diffchange diffchange-inline">Transmission</del>===  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===Single Beam <ins class="diffchange diffchange-inline">Reflection</ins>===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">This is actually easier than </del>a <del class="diffchange diffchange-inline">Single Beam Reflection however since it requires a laser for viewing it </del>is <del class="diffchange diffchange-inline">not as </del>common. <del class="diffchange diffchange-inline">The depth of field shown </del>is <del class="diffchange diffchange-inline">often much better</del>. This type of hologram is one of the least expensive as there are minimal optics and the stability <del class="diffchange diffchange-inline">requirements </del>can be minimized.  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">Also called </ins>a <ins class="diffchange diffchange-inline">Denisyuk Hologram this </ins>is <ins class="diffchange diffchange-inline">the most </ins>common <ins class="diffchange diffchange-inline">first hologram</ins>. <ins class="diffchange diffchange-inline"> It </ins>is <ins class="diffchange diffchange-inline">fairly easy to set up and can be viewed in white light</ins>. This type of hologram is one of the least expensive as there are minimal optics and the stability <ins class="diffchange diffchange-inline">requirement </ins>can be minimized <ins class="diffchange diffchange-inline">by touching the plate to the object</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">Split </del>Beam <del class="diffchange diffchange-inline">Reflection</del>===  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">Single </ins>Beam <ins class="diffchange diffchange-inline">Transmission</ins>===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This <del class="diffchange diffchange-inline">hologram </del>is <del class="diffchange diffchange-inline">also known as an off-axis reflection hologram, or </del>a <del class="diffchange diffchange-inline">"straight reflection" hologram. The </del>laser <del class="diffchange diffchange-inline">beam </del>is <del class="diffchange diffchange-inline">split into two beams with an partially mirrored beamsplitter, which can be mounted on a variable slide</del>. <del class="diffchange diffchange-inline">One portion </del>of <del class="diffchange diffchange-inline">the divided beam </del>is <del class="diffchange diffchange-inline">spread with lenses or diffusion glass to illuminate the object, set in front of the holographic recording medium</del>. <del class="diffchange diffchange-inline">The other portion of the laser is spread through a lens array or spacial filter, then reflected off </del>of <del class="diffchange diffchange-inline">a collimating mirror, which is directed at the back of the </del>hologram<del class="diffchange diffchange-inline">-to-be at the reference angle. The reference angle </del>is <del class="diffchange diffchange-inline">determined by: practicality in the optical set-up; Bragg's angle and the frequency of the recording laser; and the angle of the intended viewing light; with a range of 38 to 46 degrees giving good interference fringes. The reference angle will become the illumination angle </del>of <del class="diffchange diffchange-inline">view for </del>the <del class="diffchange diffchange-inline">finished hologram. Steering mirrors are needed to complete this set-up. This type of hologram can be more </del>expensive <del class="diffchange diffchange-inline">to produce </del>as there are <del class="diffchange diffchange-inline">additional </del>optics <del class="diffchange diffchange-inline">needed </del>and <del class="diffchange diffchange-inline">more stringent </del>stability requirements<del class="diffchange diffchange-inline">. It </del>can be <del class="diffchange diffchange-inline">much brighter than a Single Beam Reflection. It can also contain relatively vast parallax</del>. <del class="diffchange diffchange-inline">Depth is limited as in a Denisyuk hologram. (Image plane reflection holograms offer greater depth and projection possibilities, but their parallax potential is not as great as in a straight reflection hologram) </del></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This is <ins class="diffchange diffchange-inline">actually easier than a Single Beam Reflection however since it requires </ins>a laser <ins class="diffchange diffchange-inline">for viewing it </ins>is <ins class="diffchange diffchange-inline">not as common</ins>. <ins class="diffchange diffchange-inline">The depth </ins>of <ins class="diffchange diffchange-inline">field shown </ins>is <ins class="diffchange diffchange-inline">often much better</ins>. <ins class="diffchange diffchange-inline">This type </ins>of hologram is <ins class="diffchange diffchange-inline">one </ins>of the <ins class="diffchange diffchange-inline">least </ins>expensive as there are <ins class="diffchange diffchange-inline">minimal </ins>optics and <ins class="diffchange diffchange-inline">the </ins>stability requirements can be <ins class="diffchange diffchange-inline">minimized</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===Split Beam <del class="diffchange diffchange-inline">Transmission</del>===  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===Split Beam <ins class="diffchange diffchange-inline">Reflection</ins>===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This is <del class="diffchange diffchange-inline">the most common way to make </del>a <del class="diffchange diffchange-inline">transmission </del>hologram. <del class="diffchange diffchange-inline">It requires </del>a <del class="diffchange diffchange-inline">beamsplitter and </del>is <del class="diffchange diffchange-inline">most often used </del>to <del class="diffchange diffchange-inline">make an H1 for copying</del>. <del class="diffchange diffchange-inline">This type </del>of hologram is <del class="diffchange diffchange-inline">going </del>to <del class="diffchange diffchange-inline">be more expensive as there </del>are <del class="diffchange diffchange-inline">additional optics </del>needed <del class="diffchange diffchange-inline">and more stringent stability requirements</del>.  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This <ins class="diffchange diffchange-inline">hologram </ins>is <ins class="diffchange diffchange-inline">also known as an off-axis reflection hologram, or </ins>a <ins class="diffchange diffchange-inline">"straight reflection" </ins>hologram. <ins class="diffchange diffchange-inline">The laser beam is split into two beams with an partially mirrored beamsplitter, which can be mounted on </ins>a <ins class="diffchange diffchange-inline">variable slide. One portion of the divided beam </ins>is <ins class="diffchange diffchange-inline">spread with lenses or diffusion glass </ins>to <ins class="diffchange diffchange-inline">illuminate the object, set in front of the holographic recording medium</ins>. <ins class="diffchange diffchange-inline">The other portion of the laser is spread through a lens array or spacial filter, then reflected off of a collimating mirror, which is directed at the back </ins>of <ins class="diffchange diffchange-inline">the </ins>hologram<ins class="diffchange diffchange-inline">-to-be at the reference angle. The reference angle </ins>is <ins class="diffchange diffchange-inline">determined by: practicality in the optical set-up; Bragg's angle and the frequency of the recording laser; and the angle of the intended viewing light; with a range of 38 </ins>to <ins class="diffchange diffchange-inline">46 degrees giving good interference fringes. The reference angle will become the illumination angle of view for the finished hologram. Steering mirrors </ins>are needed <ins class="diffchange diffchange-inline">to complete this set-up</ins>.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">===H1 to H2 Copies=== </del></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This <ins class="diffchange diffchange-inline">type </ins>of hologram <ins class="diffchange diffchange-inline">can be more expensive to produce as there are additional optics needed and more stringent stability requirements</ins>. It <ins class="diffchange diffchange-inline">can be much brighter than </ins>a <ins class="diffchange diffchange-inline">Single Beam Reflection</ins>. It <ins class="diffchange diffchange-inline">can also contain relatively vast parallax. Depth is limited as in a Denisyuk </ins>hologram<ins class="diffchange diffchange-inline">. (Image </ins>plane <ins class="diffchange diffchange-inline">reflection holograms offer greater depth and projection possibilities, but their parallax potential is not as great as </ins>in <ins class="diffchange diffchange-inline">a straight reflection hologram)</ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This <del class="diffchange diffchange-inline">is making a copy </del>of <del class="diffchange diffchange-inline">a </del>hologram. It <del class="diffchange diffchange-inline">is a more complicated set up requiring a beamsplitter and </del>a <del class="diffchange diffchange-inline">good Master Hologram (H1)</del>. It <del class="diffchange diffchange-inline">allows the </del>hologram <del class="diffchange diffchange-inline">to bisect the film </del>plane <del class="diffchange diffchange-inline">with some of the scene </del>in <del class="diffchange diffchange-inline">front of the plate and some behind. </del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">Rainbow </del>Transmission===  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">Split Beam </ins>Transmission===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This is a <del class="diffchange diffchange-inline">special case of an H2 copy</del>. It is <del class="diffchange diffchange-inline">a transmission hologram made by masking the master hologram (</del>H1<del class="diffchange diffchange-inline">) to a horizonantal slit</del>. <del class="diffchange diffchange-inline">It </del>is <del class="diffchange diffchange-inline">viewable in white light but the color changes with viewing position</del>.  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This is <ins class="diffchange diffchange-inline">the most common way to make </ins>a <ins class="diffchange diffchange-inline">transmission hologram</ins>. It <ins class="diffchange diffchange-inline">requires a beamsplitter and </ins>is <ins class="diffchange diffchange-inline">most often used to make an </ins>H1 <ins class="diffchange diffchange-inline">for copying</ins>. <ins class="diffchange diffchange-inline">This type of hologram </ins>is <ins class="diffchange diffchange-inline">going to be more expensive as there are additional optics needed and more stringent stability requirements</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">Multiplex</del>===  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">H1 to H2 Copies</ins>===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This is a <del class="diffchange diffchange-inline">very </del>complicated set<del class="diffchange diffchange-inline">-</del>up and <del class="diffchange diffchange-inline">has </del>to <del class="diffchange diffchange-inline">do </del>with <del class="diffchange diffchange-inline">storing many close views or perspectives </del>of <del class="diffchange diffchange-inline">an object onto a single holographic plate in </del>the <del class="diffchange diffchange-inline">form of slits. Then those slits are imaged to the same relative location </del>in <del class="diffchange diffchange-inline">space creating a focused, multi perspective image. A hologram is then made </del>of the <del class="diffchange diffchange-inline">combined image projections creating 3 Dimension hologram</del>.  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This <ins class="diffchange diffchange-inline">is making a copy of a hologram. It </ins>is a <ins class="diffchange diffchange-inline">more </ins>complicated set up <ins class="diffchange diffchange-inline">requiring a beamsplitter </ins>and <ins class="diffchange diffchange-inline">a good Master Hologram (H1). It allows the hologram </ins>to <ins class="diffchange diffchange-inline">bisect the film plane </ins>with <ins class="diffchange diffchange-inline">some </ins>of the <ins class="diffchange diffchange-inline">scene </ins>in <ins class="diffchange diffchange-inline">front </ins>of the <ins class="diffchange diffchange-inline">plate and some behind</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">Holographic Optical Element (HOE)</del>===  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">Rainbow Transmission</ins>===</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">[[HOE]]s are holograms that work like optical elements </del>(<del class="diffchange diffchange-inline">mirrors and lenses</del>).  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">This is a special case of an H2 copy. It is a transmission hologram made by masking the master hologram </ins>(<ins class="diffchange diffchange-inline">H1</ins>) <ins class="diffchange diffchange-inline">to a horizonantal slit. It is viewable in white light but the color changes with viewing position</ins>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===Computer Generated===  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">===Multiplex===</ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>By computing the interference patterns, it's possible to simulate a hologram in software. The result when printed to a transparency using a standard printer is usually low resolution and inefficient, but can work. [http://www.medcosm.com/prog_CGHmaker.htm MedCosm CGH Software (free)]</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">This is a very complicated set-up and has to do with storing many close views or perspectives of an object onto a single holographic plate in the form of slits. Then those slits are imaged to the same relative location in space creating a focused, multi perspective image. A hologram is then made of the combined image projections creating 3 Dimension hologram.</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">===Holographic Optical Element (HOE)===</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">[[HOE]]s are holograms that work like optical elements (mirrors and lenses).</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===Computer Generated===</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>By computing the interference patterns, it's possible to simulate a hologram in software. <ins class="diffchange diffchange-inline"> </ins>The result when printed to a transparency using a standard printer is usually low resolution and inefficient, but can work.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://www.medcosm.com/prog_CGHmaker.htm MedCosm CGH Software (free)]</div></td></tr>
</table>Jsfisherhttps://www.holographyforum.org/w/index.php?title=Different_kinds_of_holograms&diff=1648&oldid=prevAdmin: Created page with "(For details and setup examples, see the Holography_Technology page.) (For a more technical description see Holograms.) ===Comparison=== ===Single Beam Reflection=== …"2013-04-21T00:23:01Z<p>Created page with "(For details and setup examples, see the <a href="/wiki/Holography_Technology" title="Holography Technology">Holography_Technology</a> page.) (For a more technical description see <a href="/wiki/Holograms" title="Holograms">Holograms</a>.) ===Comparison=== ===Single Beam Reflection=== …"</p>
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<td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 00:23, 21 April 2013</td>
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<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>(For details and setup examples, see the [[Holography_Technology]] page.)</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>(For details and setup examples, see the [[Holography_Technology]] page<ins class="diffchange diffchange-inline">.) (For a more technical description see [[Holograms]]</ins>.)  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">(For a more technical description see [[Holograms]].)</del></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">===Comparison=== </ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">Comparison</del>===</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">Single Beam Reflection</ins>===  </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">Also called a Denisyuk Hologram this is the most common first hologram. It is fairly easy to set up and can be viewed in white light. This type of hologram is one of the least expensive as there are minimal optics and the stability requirement can be minimized by touching the plate to the object. </ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===Single Beam <del class="diffchange diffchange-inline">Reflection</del>===</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===Single Beam <ins class="diffchange diffchange-inline">Transmission</ins>===  </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">Also called </del>a <del class="diffchange diffchange-inline">Denisyuk Hologram this </del>is <del class="diffchange diffchange-inline">the most </del>common <del class="diffchange diffchange-inline">first hologram</del>. <del class="diffchange diffchange-inline"> It </del>is <del class="diffchange diffchange-inline">fairly easy to set up and can be viewed in white light</del>. This type of hologram is one of the least expensive as there are minimal optics and the stability <del class="diffchange diffchange-inline">requirement </del>can be minimized <del class="diffchange diffchange-inline">by touching the plate to the object</del>.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">This is actually easier than </ins>a <ins class="diffchange diffchange-inline">Single Beam Reflection however since it requires a laser for viewing it </ins>is <ins class="diffchange diffchange-inline">not as </ins>common. <ins class="diffchange diffchange-inline">The depth of field shown </ins>is <ins class="diffchange diffchange-inline">often much better</ins>. This type of hologram is one of the least expensive as there are minimal optics and the stability <ins class="diffchange diffchange-inline">requirements </ins>can be minimized.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">Single </del>Beam <del class="diffchange diffchange-inline">Transmission</del>===</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">Split </ins>Beam <ins class="diffchange diffchange-inline">Reflection</ins>===  </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This is <del class="diffchange diffchange-inline">actually easier than </del>a <del class="diffchange diffchange-inline">Single Beam Reflection however since it requires </del>a laser <del class="diffchange diffchange-inline">for </del>viewing <del class="diffchange diffchange-inline">it is not as common</del>. The <del class="diffchange diffchange-inline">depth </del>of <del class="diffchange diffchange-inline">field shown is often much better</del>. This type of hologram <del class="diffchange diffchange-inline">is one of the least </del>expensive as there are <del class="diffchange diffchange-inline">minimal </del>optics and <del class="diffchange diffchange-inline">the </del>stability requirements can be <del class="diffchange diffchange-inline">minimized</del>.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This <ins class="diffchange diffchange-inline">hologram is also known as an off-axis reflection hologram, or a "straight reflection" hologram. The laser beam is split into two beams with an partially mirrored beamsplitter, which can be mounted on a variable slide. One portion of the divided beam </ins>is <ins class="diffchange diffchange-inline">spread with lenses or diffusion glass to illuminate the object, set in front of the holographic recording medium. The other portion of the laser is spread through </ins>a <ins class="diffchange diffchange-inline">lens array or spacial filter, then reflected off of </ins>a <ins class="diffchange diffchange-inline">collimating mirror, which is directed at the back of the hologram-to-be at the reference angle. The reference angle is determined by: practicality in the optical set-up; Bragg's angle and the frequency of the recording </ins>laser<ins class="diffchange diffchange-inline">; and the angle of the intended </ins>viewing <ins class="diffchange diffchange-inline">light; with a range of 38 to 46 degrees giving good interference fringes</ins>. The <ins class="diffchange diffchange-inline">reference angle will become the illumination angle </ins>of <ins class="diffchange diffchange-inline">view for the finished hologram. Steering mirrors are needed to complete this set-up</ins>. This type of hologram <ins class="diffchange diffchange-inline">can be more </ins>expensive <ins class="diffchange diffchange-inline">to produce </ins>as there are <ins class="diffchange diffchange-inline">additional </ins>optics <ins class="diffchange diffchange-inline">needed </ins>and <ins class="diffchange diffchange-inline">more stringent </ins>stability requirements<ins class="diffchange diffchange-inline">. It </ins>can be <ins class="diffchange diffchange-inline">much brighter than a Single Beam Reflection. It can also contain relatively vast parallax</ins>. <ins class="diffchange diffchange-inline">Depth is limited as in a Denisyuk hologram. (Image plane reflection holograms offer greater depth and projection possibilities, but their parallax potential is not as great as in a straight reflection hologram) </ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===Split Beam <del class="diffchange diffchange-inline">Reflection</del>===</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===Split Beam <ins class="diffchange diffchange-inline">Transmission</ins>===  </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This <del class="diffchange diffchange-inline">hologram </del>is <del class="diffchange diffchange-inline">also known as an off-axis reflection hologram, or </del>a <del class="diffchange diffchange-inline">"straight reflection" </del>hologram. <del class="diffchange diffchange-inline">The laser beam is split into two beams with an partially mirrored </del>beamsplitter<del class="diffchange diffchange-inline">, which can be mounted on a variable slide. One portion of the divided beam </del>is <del class="diffchange diffchange-inline">spread with lenses or diffusion glass </del>to <del class="diffchange diffchange-inline">illuminate the object, set in front of the holographic recording medium</del>. <del class="diffchange diffchange-inline">The other portion </del>of <del class="diffchange diffchange-inline">the laser </del>is <del class="diffchange diffchange-inline">spread through a lens array or spacial filter, then reflected off of a collimating mirror, which is directed at the back of the hologram-</del>to<del class="diffchange diffchange-inline">-</del>be <del class="diffchange diffchange-inline">at the reference angle. The reference angle is determined by: practicality in the optical set-up; Bragg's angle and the frequency of the recording laser; and the angle of the intended viewing light; with a range of 38 to 46 degrees giving good interference fringes. The reference angle will become the illumination angle of view for the finished hologram. Steering mirrors </del>are needed <del class="diffchange diffchange-inline">to complete this set-up</del>.  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This is <ins class="diffchange diffchange-inline">the most common way to make </ins>a <ins class="diffchange diffchange-inline">transmission </ins>hologram. <ins class="diffchange diffchange-inline">It requires a </ins>beamsplitter <ins class="diffchange diffchange-inline">and </ins>is <ins class="diffchange diffchange-inline">most often used </ins>to <ins class="diffchange diffchange-inline">make an H1 for copying</ins>. <ins class="diffchange diffchange-inline">This type </ins>of <ins class="diffchange diffchange-inline">hologram </ins>is <ins class="diffchange diffchange-inline">going </ins>to be <ins class="diffchange diffchange-inline">more expensive as there </ins>are <ins class="diffchange diffchange-inline">additional optics </ins>needed <ins class="diffchange diffchange-inline">and more stringent stability requirements</ins>.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This <del class="diffchange diffchange-inline">type </del>of hologram <del class="diffchange diffchange-inline">can be </del>more <del class="diffchange diffchange-inline">expensive to produce as there are additional optics needed </del>and <del class="diffchange diffchange-inline">more stringent stability requirements. It can be much brighter than </del>a <del class="diffchange diffchange-inline">Single Beam Reflection</del>. It <del class="diffchange diffchange-inline">can also contain relatively vast parallax. Depth is limited as in a Denisyuk </del>hologram<del class="diffchange diffchange-inline">. (Image </del>plane <del class="diffchange diffchange-inline">reflection holograms offer greater depth </del>and <del class="diffchange diffchange-inline">projection possibilities, but their parallax potential is not as great as in a straight reflection hologram)</del></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">===H1 to H2 Copies=== </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This <ins class="diffchange diffchange-inline">is making a copy </ins>of <ins class="diffchange diffchange-inline">a </ins>hologram<ins class="diffchange diffchange-inline">. It is a </ins>more <ins class="diffchange diffchange-inline">complicated set up requiring a beamsplitter </ins>and a <ins class="diffchange diffchange-inline">good Master Hologram (H1)</ins>. It <ins class="diffchange diffchange-inline">allows the </ins>hologram <ins class="diffchange diffchange-inline">to bisect the film </ins>plane <ins class="diffchange diffchange-inline">with some of the scene in front of the plate </ins>and <ins class="diffchange diffchange-inline">some behind. </ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">Split Beam </del>Transmission===</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">Rainbow </ins>Transmission===  </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This is <del class="diffchange diffchange-inline">the most common way to make </del>a <del class="diffchange diffchange-inline">transmission hologram</del>. It <del class="diffchange diffchange-inline">requires </del>a <del class="diffchange diffchange-inline">beamsplitter and is most often used </del>to <del class="diffchange diffchange-inline">make an H1 for copying</del>. <del class="diffchange diffchange-inline">This type of hologram </del>is <del class="diffchange diffchange-inline">going to be more expensive as there are additional optics needed and more stringent stability requirements</del>.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This is a <ins class="diffchange diffchange-inline">special case of an H2 copy</ins>. It <ins class="diffchange diffchange-inline">is </ins>a <ins class="diffchange diffchange-inline">transmission hologram made by masking the master hologram (H1) </ins>to <ins class="diffchange diffchange-inline">a horizonantal slit</ins>. <ins class="diffchange diffchange-inline">It </ins>is <ins class="diffchange diffchange-inline">viewable in white light but the color changes with viewing position</ins>.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">H1 to H2 Copies</del>===</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">Multiplex</ins>===  </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>This <del class="diffchange diffchange-inline">is making a copy of a hologram. It </del>is a <del class="diffchange diffchange-inline">more </del>complicated set up <del class="diffchange diffchange-inline">requiring a beamsplitter </del>and a <del class="diffchange diffchange-inline">good Master Hologram (H1)</del>. <del class="diffchange diffchange-inline">It allows the hologram </del>to <del class="diffchange diffchange-inline">bisect </del>the <del class="diffchange diffchange-inline">film plane with some of the scene </del>in <del class="diffchange diffchange-inline">front </del>of the <del class="diffchange diffchange-inline">plate and some behind</del>.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>This is a <ins class="diffchange diffchange-inline">very </ins>complicated set<ins class="diffchange diffchange-inline">-</ins>up and <ins class="diffchange diffchange-inline">has to do with storing many close views or perspectives of an object onto </ins>a <ins class="diffchange diffchange-inline">single holographic plate in the form of slits</ins>. <ins class="diffchange diffchange-inline">Then those slits are imaged </ins>to the <ins class="diffchange diffchange-inline">same relative location </ins>in <ins class="diffchange diffchange-inline">space creating a focused, multi perspective image. A hologram is then made </ins>of the <ins class="diffchange diffchange-inline">combined image projections creating 3 Dimension hologram</ins>.  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===<del class="diffchange diffchange-inline">Rainbow Transmission</del>===</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===<ins class="diffchange diffchange-inline">Holographic Optical Element (HOE)</ins>===  </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">This is a special case of an H2 copy. It is a transmission hologram made by masking the master hologram </del>(<del class="diffchange diffchange-inline">H1</del>) <del class="diffchange diffchange-inline">to a horizonantal slit. It is viewable in white light but the color changes with viewing position</del>.</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">[[HOE]]s are holograms that work like optical elements </ins>(<ins class="diffchange diffchange-inline">mirrors and lenses</ins>).  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">===Multiplex===</del></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>===Computer Generated===  </div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">This is a very complicated set-up and has to do with storing many close views or perspectives of an object onto a single holographic plate in the form of slits. Then those slits are imaged to the same relative location in space creating a focused, multi perspective image. A hologram is then made of the combined image projections creating 3 Dimension hologram.</del></div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>By computing the interference patterns, it's possible to simulate a hologram in software. The result when printed to a transparency using a standard printer is usually low resolution and inefficient, but can work. [http://www.medcosm.com/prog_CGHmaker.htm MedCosm CGH Software (free)]</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">===Holographic Optical Element (HOE)===</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">[[HOE]]s are holograms that work like optical elements (mirrors and lenses).</del></div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>===Computer Generated===</div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>By computing the interference patterns, it's possible to simulate a hologram in software. <del class="diffchange diffchange-inline"> </del>The result when printed to a transparency using a standard printer is usually low resolution and inefficient, but can work.</div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2"> </td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[http://www.medcosm.com/prog_CGHmaker.htm MedCosm CGH Software (free)]</div></td><td colspan="2"> </td></tr>
</table>Adminhttps://www.holographyforum.org/w/index.php?title=Different_kinds_of_holograms&diff=273&oldid=prevNini: /* Split Beam Reflection */2008-10-02T21:58:27Z<p><span dir="auto"><span class="autocomment">Split Beam Reflection</span></span></p>
<p><b>New page</b></p><div>(For details and setup examples, see the [[Holography_Technology]] page.)<br />
<br />
(For a more technical description see [[Holograms]].)<br />
<br />
===Comparison===<br />
<br />
===Single Beam Reflection===<br />
Also called a Denisyuk Hologram this is the most common first hologram. It is fairly easy to set up and can be viewed in white light. This type of hologram is one of the least expensive as there are minimal optics and the stability requirement can be minimized by touching the plate to the object.<br />
<br />
===Single Beam Transmission===<br />
This is actually easier than a Single Beam Reflection however since it requires a laser for viewing it is not as common. The depth of field shown is often much better. This type of hologram is one of the least expensive as there are minimal optics and the stability requirements can be minimized.<br />
<br />
===Split Beam Reflection===<br />
This hologram is also known as an off-axis reflection hologram, or a "straight reflection" hologram. The laser beam is split into two beams with an partially mirrored beamsplitter, which can be mounted on a variable slide. One portion of the divided beam is spread with lenses or diffusion glass to illuminate the object, set in front of the holographic recording medium. The other portion of the laser is spread through a lens array or spacial filter, then reflected off of a collimating mirror, which is directed at the back of the hologram-to-be at the reference angle. The reference angle is determined by: practicality in the optical set-up; Bragg's angle and the frequency of the recording laser; and the angle of the intended viewing light; with a range of 38 to 46 degrees giving good interference fringes. The reference angle will become the illumination angle of view for the finished hologram. Steering mirrors are needed to complete this set-up. <br />
<br />
This type of hologram can be more expensive to produce as there are additional optics needed and more stringent stability requirements. It can be much brighter than a Single Beam Reflection. It can also contain relatively vast parallax. Depth is limited as in a Denisyuk hologram. (Image plane reflection holograms offer greater depth and projection possibilities, but their parallax potential is not as great as in a straight reflection hologram)<br />
<br />
===Split Beam Transmission===<br />
This is the most common way to make a transmission hologram. It requires a beamsplitter and is most often used to make an H1 for copying. This type of hologram is going to be more expensive as there are additional optics needed and more stringent stability requirements.<br />
<br />
===H1 to H2 Copies===<br />
This is making a copy of a hologram. It is a more complicated set up requiring a beamsplitter and a good Master Hologram (H1). It allows the hologram to bisect the film plane with some of the scene in front of the plate and some behind.<br />
<br />
===Rainbow Transmission===<br />
This is a special case of an H2 copy. It is a transmission hologram made by masking the master hologram (H1) to a horizonantal slit. It is viewable in white light but the color changes with viewing position.<br />
<br />
===Multiplex===<br />
This is a very complicated set-up and has to do with storing many close views or perspectives of an object onto a single holographic plate in the form of slits. Then those slits are imaged to the same relative location in space creating a focused, multi perspective image. A hologram is then made of the combined image projections creating 3 Dimension hologram.<br />
<br />
===Holographic Optical Element (HOE)===<br />
[[HOE]]s are holograms that work like optical elements (mirrors and lenses).<br />
<br />
===Computer Generated===<br />
By computing the interference patterns, it's possible to simulate a hologram in software. The result when printed to a transparency using a standard printer is usually low resolution and inefficient, but can work.<br />
<br />
[http://www.medcosm.com/prog_CGHmaker.htm MedCosm CGH Software (free)]</div>Nini