Standard reflective device

Details Standard reflective device Standard reflective device

1980-10-23

1982-08-31

McGraw, Vincent P.

Optics: measuring and testing

Standard

2502521, 356445, G01N 2155

Patent

active

043469965

ABSTRACT:
A reflecting standard for an optical apparatus comprises a semitransparent crystal or glass which reflects from its front surface a predetermined proportion of the incident light dependent upon the index of refraction at the wavelength of the incident light. The rear surface of the reflector is disposed at an angle to the front surface and is provided with an antireflecting coating to minimize reflection therefrom.

REFERENCES:
patent: 2215211 (1940-09-01), Devol
patent: 4047032 (1977-09-01), Judge et al.

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