The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 1984
Filed:
Oct. 16, 1980
Applicant:
Inventors:
Koji Tada, Osaka, JP;
Hirokuni Nanba, Osaka, JP;
Yoshiki Kuhara, Osaka, JP;
Masayoshi Tatsumi, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Isajam, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; G02F / ;
U.S. Cl.
CPC ...
324 96 ; 324109 ; 324458 ; 350390 ;
Abstract
A voltage and electric field measuring device using light as an operating parameter. An electro-optic crystal, a quarter-wave plate, and a polarization analyzer are arranged in that order in the direction of advancement of applied light. A voltage may be applied to the electro-optic crystal through electrodes arranged thereon. The electro-optic crystal belongs to a cubic system, such as bismuth silicon oxide or bismuth germanium oxide.