Light-intercepting blade for a light control device

Details Light-intercepting blade for a light control device Light-intercepting blade for a light control device

1984-02-22

1985-07-16

Mathews, A. A.

354249, G03B 940

Patent

active

045292850

ABSTRACT:
A light intercepting blade for a light control device is constructed with guide members including a pair of wall surfaces and disposed outside the optical path with a plane intersecting the light path being positioned between the wall surfaces; a planar light intercepting blade member disposed on the plane and intersecting the light path, with one end thereof being positioned in a space gap between the pair of wall surfaces; and drive device holding the other end of the light intercepting blade member opposite to the one end thereof with respect to the light path, and for moving the light intercepting blade member in the direction of the plane so as to cause the one end of the blade to slide in and through the space gap between the pair of wall surfaces.

REFERENCES:
patent: 4298265 (1981-11-01), Tanaka et al.
patent: 4401380 (1983-08-01), Sato et al.
patent: 4486084 (1984-12-01), Sato et al.

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