Blackened optical transmission system

Details Blackened optical transmission system Blackened optical transmission system

1985-09-26

1986-08-12

Hix, L. T.

G03B 2160

Patent

active

046052836

ABSTRACT:
A blackened optical system includes a transparent substrate having a front side provided with at least a pair of elongate ribs forming therebetween an elongate groove. An amount of optically black discrete particles for absorbing visible ambient light is disposed in the groove. The particle amount is contained within the groove by means of a skin which extends between the ribs and over the groove.

REFERENCES:
patent: 2378252 (1945-06-01), Staehle et al.
patent: 2738706 (1956-03-01), Thompson, Jr.
patent: 3679451 (1972-07-01), Marks et al.
patent: 4525029 (1985-06-01), Inoue et al.

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