Apparatus for measuring reflectivity and transmissivity of a spe

Details Apparatus for measuring reflectivity and transmissivity of a spe Apparatus for measuring reflectivity and transmissivity of a spe

1977-03-25

1978-11-14

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

356124, 356244, G01N 2100, G01N 2116

Patent

active

041253280

ABSTRACT:
An apparatus for measuring reflectivity or transmissivity of a specimen has a source of light fixed to a base, a variable angle specimen frame receiving the light in a narrow beam and transmitting it or reflecting it, a light receiving unit movable around the specimen receiving frame for receiving the transmitted light or the reflected light through an optical template having groups of transverse opaque portions thereacross and movable transversely of the light coming therethrough. A recorder produces a curve of the intensity of light received by the light receiver from which the degree of transmissivity or reflectivity can be determined in comparison with a similar curve for a perfectly transmitting or reflecting specimen.

REFERENCES:
patent: 2869416 (1959-01-01), Nieman et al.
patent: 3193690 (1965-07-01), Murata et al.
patent: 3250177 (1966-05-01), Shack
patent: 3438713 (1969-04-01), Heynacher et al.
patent: 3771879 (1973-11-01), Chambu et al.
patent: 3958882 (1974-05-01), Gast

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