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:
Oct. 16, 1990
Filed:
May. 30, 1989
Applicant:
Inventors:
Sota Okamoto, Saitama, JP;
Kiyofumi Chikuma, Saitama, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350 9629 ; 307430 ; 307427 ; 350 9615 ;
Abstract
A fibre-type light conversion device comprises a fibre-type light conversion element for converting the wavelength of an incident light and an optical system which introduces a light beam from a light source to the light conversion device as the incident light. The optical system is provided with a phase-shifting device which rotates the plane of polarization of the incident light. With this provision it is possible to set the efficiency of light conversion at a maximum level without necessity of rotating the light conversion element.