Comment by cycomanic
3 hours ago
I doubt resolution is a limiting factor LCoS (transmissive ones are lower resolution typically though, but you could build reflective) phase modulators are available in 4k resolution (and maybe even higher). And I don't know if you need that much resolution because the regions you're trying to focus are quite broad, in fact I suspect the resolution of your phase modulator would not limit resolution but the max distance between focused regions, because it would set the max phase ramp you can achieve.
Loss, i.e. equivalent aperture is a different matter and I think this would imply quite a light loss.
> I doubt resolution is a limiting factor LCoS (transmissive ones are lower resolution typically though, but you could build reflective) phase modulators are available in 4k resolution (and maybe even higher)
We’re talking about a specific camera, the lytros, which had a 4MP resolution. I’m not saying there was a limitation in the technology broadly speaking. Just that this camera was not worth it for the time. It’s sacrificed too much for one feature and at $400 it just didn’t sell