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That's a great explanation, thanks. For the way you described it, to me, it doesn't sound that hard. - Create interference pattern - Record interference patt
by dosy 8y ago
That's a great explanation, thanks.
For the way you described it, to me, it doesn't sound that hard.
- Create interference pattern
- Record interference pattern
- Shine ref light onto pattern to recover emitted light
If done perfectly would this yield a convincing hologram (what I might try to describe as "visual sense impression of real 3D object being present" ) ?
What are the major limitations in the current technology? You said it might be possible for high end screen, does that mean there is hologram tech out there? I have never seen any demonstrated.
Is there some sort of information processing problem that software could solve on the interference pattern? Or is this more a physics problem -- maybe we do not have the materials that can do the steps required?
- _ph_ 8y agoThe catch is, that the patterns have the resolution of the wavelength of light. You cannot take plain black and white film for this, you would need extremely high resolution film material. Agfa actually produced special film for holograms for a while, high contrast and very high resolution, but with a sensitivity like ISO 10. The resolution is far higher than normal LCD screens offer and that would be the main impediment. The math for calculating the interference patterns is almost trivial, but the scale is massive. Doing it in real-time would still require quite high-power setups, as you would have to calculate hundreds of rays per "pixel".
- dosy 8y agoThis is so interesting, thanks. From my photog background, yep ISO 10 would be very tough to work with.