Optical current measurement device and method of manufacturing i

Details Optical current measurement device and method of manufacturing i Optical current measurement device and method of manufacturing i

1997-08-05

1999-08-03

Pham, Hoa Q.

Optics: measuring and testing

By polarized light examination

3242441, 324 96, G01R 33032, G01R 3100

Patent

active

059332387

ABSTRACT:
An optical measurement device that can be made of small size and weight without impairing accuracy under ambient temperature variations. An optical system accommodating box, includes a polarizing unit in which incoming light from a light source is converted to linearly polarized light, and an analyzing unit that resolves into orthogonal components linearly polarized light that has been rotated. A casing is constituted by three identical members 41, 42, and 43, the members being mutually stuck together with polarizer 34, analyzers 35 and reflective mirrors 36, in the form of thin sheets, interposed therebetween.

REFERENCES:
patent: 4564754 (1986-01-01), Sato et al.
patent: 4797607 (1989-01-01), Dupraz
patent: 5475489 (1995-12-01), Gottsche
patent: 5751877 (1998-05-01), Ishizaka et al.
patent: 5764046 (1998-06-01), Bosselmann

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