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filmscanners: LED Illumination for Film Scanners
-----Original Message-----
From: owner-filmscanners@halftone.co.uk
[mailto:owner-filmscanners@halftone.co.uk]On Behalf Of Austin Franklin
Sent: Wednesday, June 20, 2001 11:09 PM
To: filmscanners@halftone.co.uk
Subject: RE: filmscanners: LED Illumination for Film Scanners
>> Sure you could have done that 15-20 years ago.
>> Use filters...red, green and blue filters
>> certainly were around 15-20 years ago.
HUH??? Please explain to me how to filter monochromatic red light from an
LED to get blue light. If you can figure out how do that you'll be up for a
Nobel prize in physics.
Cliff Ober
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