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From: rich@net1.ucsd.edu (bmf)
Newsgroups: comp.graphics
Subject: Color desktop scanners (a technical discussion continues)
Message-ID: <1914@ucsd.EDU>
Date: 22 Aug 89 03:47:39 GMT
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First of all, thanks for the good response. I am working on a
summary of what I have read so far and what I saw at the SPIE show.

But about this laser stuff....

I have been told a white light laser does not exists because
cramming all those frequencies together they start cancelling
out and moving in different directions after some distance.

Tunable lasers are neat, but if they skip any decent size part of
the visible spectrum you loose that color in the image and if it
takes more than a micro second to change frequency, you'll be
scanning for an awfull long time.

Something along the lines of defraction gradings aimed onto a ccd
to read frequencies or other spectral analysis tools may prove
interesting.

-Rich

/*    Rich Stewart   		{dcdwest,ucbvax}!ucsd!net1!rich  */