Apparatus and method for continuously measuring polarizing prope

Details Apparatus and method for continuously measuring polarizing prope Apparatus and method for continuously measuring polarizing prope

1984-12-28

1987-08-04

Rosenberger, R. A.

Optics: measuring and testing

By polarized light examination

With polariscopes

356366, G01B 400

Patent

active

046842560

ABSTRACT:
An apparatus for measuring an optical axis direction in which an intensity of the light transmissive to a specimen to be measured disposed between two polarizers is measured by an orthogonal Nicol optical system which uniaxially comprises a light source, said two polarizers, and a light receptor thereby determining the optical axis direction of the specimen to be measured. The apparatus comprises a conveyor for continuously moving the specimen in an elongated form in the direction intersecting with the orthogonal Nicol optical system at a right angle. An intensity of the transmissive light is measured during the period of time when the specimen is fed from one side of a casing, and removed from the other side of the casing. The casing encases the optical system.

REFERENCES:
patent: 3994593 (1976-11-01), Kato et al.
patent: 4469443 (1984-09-01), Geller
"Kerr Effect: Application to Phase and Electric Field Induced Absortion Measurements in Glasses", Paillette, Optics Communications, 15 Mar. 82, vol. 41, #2.

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