Wide-angle viewing window with a plurality of optical structures

Details Wide-angle viewing window with a plurality of optical structures Wide-angle viewing window with a plurality of optical structures

1988-05-25

1990-02-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250203R, 350441, H01J 314, G02B 1306

Patent

active

049009141

ABSTRACT:
The invention is directed to a viewing window having a wide-angle view. This window is realized by subdividing the space to be viewed into sectors which requires the utilization of several different prismatic bodies.

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patent: 4554447 (1985-11-01), Howard et al.
patent: 4554459 (1985-11-01), Tsutsumi et al.
patent: 4625108 (1986-11-01), Nestel et al.
patent: 4674874 (1987-06-01), Halldorsson et al.
patent: 4812643 (1989-03-01), Talbot

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