Wide-angle illuminating optical system with light guide

Details Wide-angle illuminating optical system with light guide Wide-angle illuminating optical system with light guide

1975-10-07

1977-04-12

Corbin, John K.

350175SL, 350231, G02B 516

Patent

active

040171507

ABSTRACT:
A wide-angle illuminating optical system with light guide comprising a positive lens system positioned near the end face of the light guide and arranged to illuminate over a wide observing area by converging the light from the light guide and then diverging said light by means of the positive lens system.

REFERENCES:
patent: 2927574 (1960-03-01), Scholz
patent: 2987960 (1961-06-01), Sheldon
patent: 3132646 (1964-05-01), Hett
patent: 3136310 (1964-06-01), Meltzer
patent: 3145249 (1964-08-01), Meltzer

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