These days Eric Fossum is consulting Samsung Advanced Institute of Technology, Nanodevices Laboratory, as in Eric's CV. Eric writes about his current work in dpreview forum:
Roland Karlsson:
"In a future sensor(when it is a pure photon counter- and that will
happen - mark my words) - then higher density will always mean higher
image quality. All photons are collected - and the better you know
the position - the better the image quality."
Eric Fossum:
"I don't see how anyone could possibly argue with this. If you can count every photon that hits the sensor and record its position (and wavelength!) it would be hard to imagine a better sample of the photon field.
Anyway, I am working on this sort of thing. I think the real question is what do you do to post process your picture. One approach is a "digital film sensor" as I have mentioned in past posts. See slides 68-89 more or less of the presentation on my website if you are interested:
Image Sensors Past Present and Future Presentation
[snip]
As far as where we stand, I should not say as I work as a consultant for Company X these days and it will be up to Company X to say when and where any news is released. On the other hand, it is a multi year research project and not part of any product development plan. I certainly am grateful for the support and long range vision of Company X and I hope this turns into a useful technology for them."
If Eric means Samsung, I certaily agree that it has a long range vision and resources to implement it.
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