© 2000-2018 MAG
The main optical element - a slit in front of the CCD. The paper-blind
helps to reduce disturbing light.
The first pictures were, what a shame, not sharp. Something which was
to be expected, because the viewing distance of the original scanner
is about 10cm (4inch).
At least we learned how to calibrate the colors using the RGB potis.
Maybe a bit too naive, but it's only the results which count:
The most short-sighted friend had to tell, up to which distance
he recognizes something as sharp. Rule of three and we had the
dioptren to correct the scanners optic.
A gentle optician donated old glasses for the experiment.
Jenoptik, Munich donated an Infrared filter to minimize some strange
effects with the CCD. In daylight the sensor was overexposed all the
time and the green of plants looked violett without the Filter...
Important again the blind to reduce light reflects...