Luminous Landscape Forum

Raw & Post Processing, Printing => Digital Image Processing => Topic started by: David White on September 01, 2006, 11:59:29 am

Title: Diffraction grating LCD
Post by: David White on September 01, 2006, 11:59:29 am

Interesting article about the use of diffraction gratings made from artificial muscle which in comination with a full spectrum white light can provide displays with the ability to cover the full spectrum of human vision.  The article can be viewed here. (http://newosa.osa.org/news/release/08.2006/ColorDisplays.asp)

Looks like wonderful times ahead for the future of photography.

Title: Diffraction grating LCD
Post by: AJSJones on September 03, 2006, 06:52:45 pm

Quote

Interesting article about the use of diffraction gratings made from artificial muscle which in comination with a full spectrum white light can provide displays with the ability to cover the full spectrum of human vision.  The article can be viewed here. (http://newosa.osa.org/news/release/08.2006/ColorDisplays.asp)

Looks like wonderful times ahead for the future of photography.
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I wondered about that claim when I saw the headline.  It put me in mind of an article in Jul2006 in Scientific American where I learned that humans have only 3 light absorbing pigments that tell the brain about color (spectral peaks at 424 nm, 530 nm and 560 nm roughly indigo, green and orange); the relative intensities of the signals from cone cells with these pigments is "decoded" as the color we perceive.  That's why a signal with 3 separate pieces of data (such as CMY or RGB) is in principle sufficient for the brain to recreate all the colors the brain knows of.  

Interestingly, birds have 4 pigments, so an RGB monitor could not display enough information for a bird to see the image as realistic.