Card – picture – or sign exhibiting – Photographic transparency viewer – e.g. – x-ray viewer
Patent
1997-05-15
1999-04-06
Green, Brian K.
Card, picture, or sign exhibiting
Photographic transparency viewer, e.g., x-ray viewer
40367, G02B 2702
Patent
active
058903054
ABSTRACT:
A viewing apparatus for transparencies or the like masks any display areas not covered by transparencies by generating masks without moving parts, and adapts the luminance level of the image under study and of other display areas to the optimal viewing conditions required by the observer.
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Inbar Dan
Teltsch Giora
Green Brian K.
SmartLight Ltd.
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