2 color Keith Haring

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Re: 2 color Keith Haring

by holomaker » Mon Apr 12, 2021 6:19 am

Mr Astro wrote: ↑Fri Sep 11, 2020 8:30 pm thanks for the laser :D
here is my test
little old lady.jpg
Can you provide a couple more pictures/information ? Nice work

Re: 2 color Keith Haring

by Mr Astro » Fri Sep 11, 2020 8:30 pm

thanks for the laser :D
here is my test
little old lady.jpg
little old lady.jpg (28.47 KiB) Viewed 9159 times

Re: 2 color Keith Haring

by holomaker » Tue Feb 11, 2020 10:59 am

Lol Nana , now I can’t see the messages you sent me here on the forum, says my inbox was full? Now empty and still nothing !

Re: 2 color Keith Haring

by holomaker » Mon Feb 10, 2020 8:43 am

Yes covered all that ... To make it-less complicated the green and red are balanced.. it is possible to adjust , have a couple made and ready to go.. if you want one lmk. Send me a PM. Here’s an expanded beam using a achromate lens only.there are two access holes that allow you to adjust color output ..

If the diameters of the beams are off that’s ok as there’s plenty of green light to throw away if needed...

The idea was to make full color holography easier as all that is needed to add a sapphire to it ..
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Re: 2 color Keith Haring

by stefanosica » Mon Feb 10, 2020 3:07 am

I think it is important to be able to balance the two colors by doing exposure tests in red and green. I have read that very often different batches of the same emulsion have different sensitivity curves. In any case, you can always play on the exposure times of the individual lasers. The important thing is that the two lasers are collinear and that the circles of the expanded rays have the same diameter and have the polarization planes parallel to them. Big work ! Congratulations ! As soon as the device will be available on ebay I could definitely consider buying it.

Re: 2 color Keith Haring

by holomaker » Sat Feb 08, 2020 8:08 pm

stefanosica wrote: ↑Sat Feb 08, 2020 12:42 pm Very interesting device to start the color holography. Since the color emulsions have similar sensitivities in green and red, is it possible to adjust the power emitted by the green laser to make it close to that of the red laser? Thank you.
Yes any adjustment is possible, I thought I had the color balanced as seen in the photo oh the Haring pins , do you think it’s to green?
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Re: 2 color Keith Haring

by stefanosica » Sat Feb 08, 2020 12:42 pm

Very interesting device to start the color holography. Since the color emulsions have similar sensitivities in green and red, is it possible to adjust the power emitted by the green laser to make it close to that of the red laser? Thank you.

Re: 2 color Keith Haring

by holomaker » Sat Feb 08, 2020 9:48 am

Ok Nana check your pM box

Re: 2 color Keith Haring

by Nnnn » Sat Feb 08, 2020 4:05 am

Count me in! :mrgreen:

Excellent work on this one.

Re: 2 color Keith Haring

by holomaker » Wed Feb 05, 2020 7:08 am

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