Biocular viewing optical apparatus

Details Biocular viewing optical apparatus Biocular viewing optical apparatus

G - Physics

02

B

88/104, 88/18

G02B 17/08 (2006.01)

Patent

CA 1148000

"BIOCULAR VIEWING OPTICAL APPARATUS" ABSTRACT OF THE DISCLOSURE Optical apparatus for biocular viewing of relatively low cost and light weight comprises a solid Cassegrain con- figuration in a solid meniscus element having a negative lens element cemented to its convex face and an associated corrector lens element which provide a magnified collimated image of an object for viewing by a pair of telescopes hav- ing light folding means to provide an exit pupil separation suitable for two eye viewing. At least some of the lens elements may be of plastics material and aspheric surfaces may be employed. The apparatus is particularly useful for night vision goggles having a single image intensifier tube. -1-

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