Direction indicating reflector with planar reflector panels incl

Details Direction indicating reflector with planar reflector panels incl Direction indicating reflector with planar reflector panels incl

1990-06-13

1991-06-11

Henry, Jon W.

Optics: measuring and testing

Range or remote distance finding

With photodetection

350109, 350 97, 356138, G02B 5122

Patent

active

050227394

ABSTRACT:
A direction indicating reflector uses two planar reflecting panels arranged at an included angle of about 60.degree. to each other. Each panel provides an optically exposed plurality of cube corners arranged in triads of mutually perpendicular retro reflectant surfaces which are not individually distinguishable at minimum expected viewing distances.

REFERENCES:
patent: 3358944 (1967-12-01), Ule
patent: 3458245 (1969-07-01), Stanley
patent: 3572942 (1971-03-01), teKronnie
patent: 3784279 (1974-01-01), Hedgewick
patent: 3873210 (1975-03-01), Konopka
patent: 3984175 (1976-10-01), Suhr et al.
patent: 4560236 (1985-12-01), Clarke
patent: 4629325 (1986-12-01), Bergkuist et al.

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