Holography Demonstration

http://www.thomasgrillo.com
A remastered version of my introduction to holography in which I demonstrate two holographic optical table layouts for making transmission master, and reflection copy holograms. Recorded by Thomas Grillo in 1997 at Parallax Holograms Studios in Mississippi.

Copyright 2007 Thomas Grillo

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[xenodrone]

so the guy who is a master of the theremin is also a master of holography?

well, I'm impressed..

[ThomasGrillo]

@xenodrone Indeed. Thanks. :)

[Hyrobaka]

now you need to figure out how to manipulate a hologram with the music from a theremin, so that it can be dynamic and flow in infinite combinations of object and color, perhaps even recognizable moving shapes, like people dancing....

[ThomasGrillo]

@Hyrobaka COOL! Although this won't work with real holograms, a theremin's audio output could be routed into a computer to control a CGI 3-D animation on the fly. Morphing of shape could be handled by pitch, while color could be controlled by the volume dynamics. This would indeed be a fascinating exhibit for museums, and art galleries.

Thanks for the idea! :)

[sabaths1fan]

awesome

[ThomasGrillo]

@sabaths1fan Thanks. :)

[AsaphProject]

@Hyrobaka That may be the greatest idea I've ever heard!

[ThomasGrillo]

@ThomasGrillo Oh, getting back to spatial filtering, there is low cost, low tech approach you can use which involves not using a lens, but instead, bouncing the beam of the dull side of a bit of aluminum foil, or by shining the beam through a diffuser, a bit of frosted glass or plastic. It will produce a nice gausian spread, but will be much dimmer than with a filter. If your laser is at least 5 mW, or better yet, 40 mW, you should be ok, but exposures will be way longer.

[ThomasGrillo]

@Ruttie2 In holography, you can use an LCD display as the source for motion picture holograms. A playback device off table provides the frames of video to be imaged one by one. The laser lights up the LCD display using a diffuser behind it. The display is treated as any object in a holo lay out for transmission holography. The LCD's images are focosed on to the film plate as a slit. Dozens of slit holograms are made one by one. The reference beam is set up for transmission holos.

[Ruttie2]

@ThomasGrillo Oh ok, so i need a

spacial filter right? Oh, and i had one

more question. There's this stuff going

on on the internet, which claims you

can use a digital camera to create a

holographic motion picture, and then

reconstruct it by using an LCD as a

heat pattern or somethin' and light

it up with a laser.. Is that stuff for real?