Results 1 to 6 of 6

Thread: Generated Holograms

  1. #1
    Join Date
    May 2021
    Posts
    23

    Default Generated Holograms

    Has anyone ever worked with Computer Generated Holograms ? please share your experience.

    Your thoughts would be appreciated.

    Thanks

  2. #2
    Join Date
    Mar 2010
    Posts
    581

  3. #3
    Join Date
    Jun 2009
    Location
    Mesa, AZ
    Posts
    1,277

    Default

    Do you mean CGH for optical elements? Or for pictorial applications, like those presented on LCoS displays? Here's an article about an early (if not first) step in their development from April, 1967:
    Attached Thumbnails Attached Thumbnails Computer Holography67.jpeg  

    Computer Holography67B.jpeg  


  4. #4
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
    Infinitus Excellentia Ion Laser Dominatus
    Join Date
    May 2007
    Location
    A lab with some dripping water on the floor.
    Posts
    9,890

    Default

    Quote Originally Posted by Eidetic View Post
    Do you mean CGH for optical elements? Or for pictorial applications, like those presented on LCoS displays? Here's an article about an early (if not first) step in their development from April, 1967:

    I'm waiting to see some independent reviews of LitiHolo's new printer before buying one..

    Steve
    Qui habet Christos, habet Vitam!
    I should have rented the space under my name for advertising.
    When I still could have...

  5. #5
    Join Date
    Jun 2009
    Location
    Mesa, AZ
    Posts
    1,277

    Default

    I'd wait for full parallax to be part of the deal. Since they're exposing individual hogels, that's just software. I'd also want to see a hologram made on one before buying. That should be cheap for them to provide in advance. And I'd be concerned about the inter-hogel gaps (if any). That might be necessary because of their material of choice, or cheap optics, or both, but it somewhat blows the magic of an image-planed reflection holographic image.

    "Computer generated hologram" can mean lots of things these days. Computer generated holographic imagery on computer controlled exposure device (like Liti, Zebra, Geola, Ultimate). Fringe patterns scribed into surfaces by e-beam, or etched by photolithography. Holograms on LCoS displays showing computer generated dynamic image content. Diffractive optics that make images with laser pointers. Helioseismic holography. And the fauxlographic things like Pepper's Ghosts, lightfield displays, lenticular displays, spinning blades with LEDs, and reflections of monitors in windows.
    Last edited by Eidetic; 05-17-2021 at 08:41.

  6. #6
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
    Infinitus Excellentia Ion Laser Dominatus
    Join Date
    May 2007
    Location
    A lab with some dripping water on the floor.
    Posts
    9,890

    Default

    Their version of "The Kiss" in the demo video is interesting but "data limited", it seems like it is only four "fields" of Voxels.

    I need to see much more imaging before I buy.

    Steve
    Qui habet Christos, habet Vitam!
    I should have rented the space under my name for advertising.
    When I still could have...

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •