Technique for eliminating undesirable reflections from optical s

Details Technique for eliminating undesirable reflections from optical s Technique for eliminating undesirable reflections from optical s

1975-11-20

1997-05-13

Moskowitz, Nelson

Ordnance

Mounts

Training mechanisms

33233, 359493, 359501, 359601, F41G 138

Patent

active

056294921

ABSTRACT:
Undesirable reflections from an element in an optical system are eliminated y passing incoming light through a polarizer and a 45.degree. optical rotator before it strikes the reflective element. The reflected light component is again rotated 45.degree. by the rotator, for a total rotation of 90.degree., whereupon it is blocked from leaving the system by the polarizer. Alternatively, a quarter wave plate or other circular polarizing component may replace the rotator to result in a net rotation of the polarization of the reflected light by 90.degree..

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patent: 3566099 (1971-02-01), Makas
patent: 3600094 (1971-08-01), Liskowitz
patent: 3954340 (1976-05-01), Blomquist et al.
patent: 4028991 (1977-06-01), Kuby

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