Catadioptric lens system

Details Catadioptric lens system Catadioptric lens system

1979-08-13

1981-04-28

Clark, Conrad J.

G02B 1708

Patent

active

042641365

ABSTRACT:
A compact catadioptric lens system with a widened field angle is disclosed and characterized in that the axial distance L between the main-mirror element (M.sub.1) and the sub-mirror element (M.sub.2) fulfills the following condition in relation to the diagonal length D of the rectangular focal plane on which the image is projected:

REFERENCES:
patent: 3507556 (1970-04-01), Shimizu
patent: 3632190 (1972-01-01), Shimizu
patent: 4061420 (1977-12-01), Kaprelian
patent: 4165151 (1979-08-01), Momiyama
patent: 4188091 (1980-02-01), Fujii

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