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:
Dec. 11, 1979
Filed:
May. 31, 1978
Teiji Uchida, Tokyo, JP;
Atsufumi Ueki, Tokyo, JP;
Nippon Electric Co., Ltd., Tokyo, JP;
Abstract
An optical isolator maintains the intensity of light traveling therethrough in a forward direction, irrespective of the condition of polarization of the light, while substantially, preventing light having any condition of polarization from traveling therethrough in a reverse direction. The optical isolator generally includes first polarization apparatus to divide an incident light beam into two linearly polarized light beams having their directions of polarization perpendicular to each other, a non-reversible polarizing rotation element to rotate each of said linearly polarized light beams to form two rotated linearly polarized light beams and polarization converting apparatus which, in conjunction with a second polarization apparatus, synthesizes the two rotated linearly polarized light beams.