Full-focus eyepiece

Details Full-focus eyepiece Full-focus eyepiece

1976-07-09

1977-10-18

Clark, Conrad J.

350220, G02B 2500, G02B 1316, G02B 934

Patent

active

040543706

ABSTRACT:
An optical system for an eyepiece designed primarily to be used to observe an image formed by an optical instrument, such as an image intensifier, when viewing scenes under adverse or low light conditions. The system is designed with fewer elements than comparable designs of similar optical performance, and in the embodiments shown, five elements provide the required correction for high quality imaging of the viewed scene.

REFERENCES:
patent: 2084309 (1937-06-01), Bertele

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