Optical reflector having a nickel-iron alloy reflecting surface

Details Optical reflector having a nickel-iron alloy reflecting surface Optical reflector having a nickel-iron alloy reflecting surface

Filed on

1979-10-09

Date issued

1981-05-19

Examiner

Henry, Jon W.

Other Related Categories

G02B 718, G02B 510

Type

Patent

Status

active

Patent number

042681243

Description

ABSTRACT:
There is disclosed an optical mirror consisting essentially of an electrodeposited nickel-iron face sheet having a relatively low temperature coefficient of expansion on a lightweight graphite backup substrate having approximately the same temperature coefficient of expansion as the electrodeposited nickel-iron face sheet.

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