Light-shielding blade

Details Light-shielding blade Light-shielding blade

1990-04-23

1991-02-12

Hix, L. T.

G03B 910

Patent

active

049928139

ABSTRACT:
A light-shielding blade made of a carbon fiber-reinforced plastic plate, composed of three or more reinforced plastic sheets each of which consists of continuous carbon fibers aligned in one direction and matrix resin enveloping the carbon fibers and which are plane symmetrically laminated in such a manner that the directions of fibers of the sheets are mutual substantially perpendicular. The carbon fiber-reinforced plastic plate has a thickness in a range of 60 to 120 .mu.m, and carbon black is incorporated only in the outermost ones of the sheets constituting the plate, a black coating of a thickness of 0.1 to 3 .mu.m is provided on each surface of the plate.

REFERENCES:
patent: 4394082 (1983-07-01), Senuma et al.
patent: 4482231 (1984-11-01), Kato et al.
patent: 4775583 (1988-10-01), Kawamura

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