Optical device particularly useful as as night vision goggles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 4, 1989
Grant Date -
N/A
app pub date -
Mar 2, 1988
filing date -
Mar 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical device comprising a monocular assembly including an objective lens to be located remote from the viewer's eye for viewing a scene, and a cathode ray tube and prism assembly for injecting additional information into the viewed scene. The prism assembly is adjacent to and aligned with the objective lens and comprises a pair of transparent prisms having confronting inclined surfaces joined together at their inclined surfaces, and a reflector sandwiched between the joined inclined surfaces and having a surface area which is from 0.5% to 5.0% of the surface area of the objective lens.
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Family
International Classification(s)
Cited Art Landscape
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