21 Apr
2005
21 Apr
'05
5:21 p.m.
On Apr 21 2005, 18:28, John Foust wrote:
You could just remove the fiche viewer screen. You don't need the
screen to form the image, you only need the (virtual) image from the
viewer's lens system to be focussed in the same plane as the scanner's
optics. Actually, since the image is usually focussed on the back
surface of the viewer screen, you'd want to remove it anyway.
Similarly, you don't need to remove the scanner's lamp, except perhaps
to eliminate stray reflections that would cause glare and reduce
contrast. You would just disconnect its power if that were the
requirement.
--
Pete Peter Turnbull
Network Manager
University of York
At 05:14 PM 4/21/2005, Pete Turnbull wrote:
somthing to
hold the fiche against a lens and project a
magnified image onto the scanner glass. I assume that, in essence,
is how Al's big fiche scanner works.
What, no one here has ever tried to bolt a scanner to the
frosted glass face of an ordinary fiche viewer? You'd want to trick
it into not using its own lamp, but that's been done before with
the guy who turned a scanner into a high-res camera.