1974-04-23
1976-02-03
Rubin, David H.
350 35, 350145, 350189, 350216, 350220, G02B 2500, G02B 2120
Patent
active
039361527
ABSTRACT:
A device for binocular viewing of, for instance, fluorescent screens, image converters, and image intensifiers. Designed to be hand held, the device is light and compact. A single optical system of at least four lens elements provides the desired magnification. Behind the last element (in the direction of travel of the light from the object being viewed to the eyes of the person using the device) there are two rhombic prisms to spread the light beam to the two eyes of the user. In a preferred form, the prisms are adjustable to match the interpupillary distance of the user. At least one of the lens elements of the magnification system preferably has an aspherical surface.
REFERENCES:
patent: 1240905 (1917-09-01), Troppman
patent: 1650646 (1927-11-01), Ott
patent: 2885928 (1959-05-01), Baker
Aurin Friedrich
Kantor Paul
Knutti Helmut
Weinheimer Hans-Richard
Rubin David H.
Stiftung Carl Zeiss
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