On Mon, 4 Feb 2002, Sid Washer wrote:
> The whole idea of using a panel made up of arrays of red, green and
> blue LEDs is that the output colour temperature can be smoothly adjusted
> to anything you want or need without problem.
The problem I can see with this is that you are dancing around the problem
of "apparent" color temperature as interpreted by your eye that sees only
red, green, and blue. As opposed to "true" color temperature which is a
continuous frequency spectrum. In other words, your perception of color
depends on the relative intensities of red, green, and blue because of the
physiology of your eye.
If the photochemical response of the paper depends on the presence of a
particular wavelength of light that is not present from the red, green, or
blue LED's; simply mixing these isn't going to create the missing
frequency. I think linear superposition applies here, not non-linear
mixing which would give you beat (sum and difference) frequencies.
> There are photos of array designs on one of the RIT websites, among
> other places. If I can find my bookmarks to them, I'll post them.
I'd be interested in seeing these.
- Wayde
([EMAIL PROTECTED])
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ISART 2002
International Symposium on Advanced Radio Technologies
http://www.its.bldrdoc.gov/meetings/art/index.html
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