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

1983-01-25

1986-02-18

Miska, Vit W.

G03B 940

Patent

active

045710457

ABSTRACT:
A light control device includes a planar light-intercepting blade disposed across the optical path of an optical device and driving means for holding the light-intercepting blade and moving the light-intercepting blade in the direction of the surface thereof. The planar light-intercepting blade includes a first area having a substantially constant thickness, a second area surrounded by the first area and thinner than the first area and a coupling portion provided in the first area and coupled to the driving means. The first and second areas are formed so that the proportion of the blade occupied by the second area relative to the first area in the direction of movement of the light-intercepting blade gradually increases in the direction away from the coupling portion.

REFERENCES:
patent: 4401380 (1983-08-01), Sato et al.

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