Programmable light modulator for viewing transparent film prints

Details Programmable light modulator for viewing transparent film prints Programmable light modulator for viewing transparent film prints

1992-12-01

1994-05-24

Nerbun, Peter

Card, picture, or sign exhibiting

Photographic transparency viewer, e.g., x-ray viewer

359259, 362 97, G02B 2702

Patent

active

053137264

ABSTRACT:
An improved apparatus for viewing transparent film prints, such as X-rays, mammograms and sonograms, is provided, which apparatus includes a light source, a viewing stage and an array of light valves to selectively prevent the transmission of light from the light source to certain areas of the viewing stage. The apparatus allows an operator to more efficiently and accurately discern detail in the analysis of transparent film prints.

REFERENCES:
patent: 3285130 (1966-11-01), Cocca et al.
patent: 3614200 (1971-10-01), Taylor
patent: 3644017 (1972-02-01), Ploss
patent: 3726034 (1973-04-01), De Belder et al.
patent: 4404619 (1983-09-01), Ferguson
patent: 4510708 (1985-04-01), Pokrinchak
patent: 4637150 (1987-01-01), Geluk

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