Search found 27 matches

by whoiswei
Thu Jul 16, 2026 7:31 pm
Forum: DCG
Topic: Some Discussions Regarding Gelatin-Based Holographic Plates
Replies: 5
Views: 1861

Re: Some Discussions Regarding Gelatin-Based Holographic Plates

There are many materials that have been tried/used for holography besides silver halide and dichromates. The problem is that these 'holography' sites/forums/social media is dominated by display holographers, who simply use holography either for art or as a hobby. There are no sites, as far as I kno...
by whoiswei
Wed Jul 15, 2026 7:57 am
Forum: For Sale / Want to Buy / Trade
Topic: I want to resell OBIS cores
Replies: 8
Views: 21294

Re: I want to resell OBIS cores

​I have two pieces of news to share with everyone today: one bad, and one good. ​The bad news is that due to price increases from my upstream suppliers, I am forced to raise my prices as well. The 488 is now priced at $200, the 561 at $450, and all remaining models are $350. ​The good news is that I...
by whoiswei
Sat Jul 11, 2026 9:17 pm
Forum: DCG
Topic: Some Discussions Regarding Gelatin-Based Holographic Plates
Replies: 5
Views: 1861

Some Discussions Regarding Gelatin-Based Holographic Plates

The photosensitive mechanism of gelatin dry plates fundamentally relies on photo-induced electron transfer, which causes gelatin cross-linking and subsequent refractive index modulation. Why is it that, among various gelatin systems, only dichromated gelatin (DCG) stands out, while diazo-gelatin and...
by whoiswei
Fri Jul 03, 2026 11:31 am
Forum: General Holography
Topic: Could anyone explain how dynamic holography is achieved?
Replies: 5
Views: 4069

Re: Could anyone explain how dynamic holography is achieved?

No. Suggest you find and read the previously recommended papers. You can also use LCoS and DMD SLM devices. Since you’re sophisticated enough to already know about those devices, you should be easily able to track down and read the papers and many many later papers. Start with the basics and build ...
by whoiswei
Sat Jun 20, 2026 12:14 pm
Forum: General Holography
Topic: Could anyone explain how dynamic holography is achieved?
Replies: 5
Views: 4069

Re: Could anyone explain how dynamic holography is achieved?

All the examples shown appear to be “horizontal parallax only” which implies H1/H2 system using sequential adjacent slit exposures of 2D image sequences for H1 and then projection of H1 master onto and H2 hologram of overlapped frames recorded in H1. For further research by you, suggest starting wi...
by whoiswei
Sat Jun 20, 2026 12:12 pm
Forum: General Holography
Topic: Could anyone explain how dynamic holography is achieved?
Replies: 5
Views: 4069

Re: Could anyone explain how dynamic holography is achieved?

oh,thank you very much,but it looks very hard!
by whoiswei
Sat Jun 20, 2026 8:42 am
Forum: General Holography
Topic: Could anyone explain how dynamic holography is achieved?
Replies: 5
Views: 4069

Could anyone explain how dynamic holography is achieved?

​I recently saw in a Bilibili video (https://b23.tv/6AEyzmk) that holography can actually produce dynamic effects. I originally thought this could only be accomplished through computer-generated holography (CGH), so I am very curious about the specific principles behind it. The only method I can thi...
by whoiswei
Sun Apr 12, 2026 8:33 am
Forum: DCG
Topic: OBIS LS/LX Can OBIS LS/LX lasers be used to create holograms?
Replies: 13
Views: 903180

Re: OBIS LS/LX Can OBIS LS/LX lasers be used to create holograms?

大部分情况下,它可以,OBIS Core ls和OBIS LS的光路貌似是差不多的,只是OBIS LS自带驱动板,还有个壳
by whoiswei
Wed Mar 18, 2026 3:09 am
Forum: holoforum administration
Topic: Server performance issues
Replies: 1
Views: 34273

Re: Server performance issues

I think we might need Cloudflare.
by whoiswei
Sun Mar 15, 2026 12:10 am
Forum: For Sale / Want to Buy / Trade
Topic: I want to resell OBIS cores
Replies: 8
Views: 21294

Re: I want to resell OBIS cores

So if these units will only do like 20mw , this is a much lower output compared to the PL-530 50-75mw ? Yes, their output power is indeed much lower. However, its advantages lie in its relatively low price, a more complete OPSL optical path structure (unlike the more simplified design of the PL530)...