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:
Feb. 03, 1987
Filed:
Jan. 16, 1984
Applicant:
Inventors:
Yukuo Nishimura, Sagamihara, JP;
Toshiaki Asano, Yokohama, JP;
Nobutoshi Mizusawa, Yokohama, JP;
Eigo Kawakami, Kawasaki, JP;
Masahiro Haruta, Funabashi, JP;
Takashi Noma, Tokyo, JP;
Hiroshi Takagi, Yokohama, JP;
Mitsunobu Nakazawa, Tokyo, JP;
Kunitaka Ozawa, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G09G / ; G09F / ; F21V / ;
U.S. Cl.
CPC ...
350 9632 ; 350 9630 ; 350 9634 ; 350 9610 ; 350 9624 ; 350363 ; 340758 ; 340771 ; 358901 ; 40547 ; 362 32 ;
Abstract
An optical device comprises an optical waveguide having, as a basic unit, a core layer of a liquid having a relatively high refractive index and a clad layer having a relatively low refractive index and covering said core layer, and a heat-generating means for heating a part of said core layer to form a vapor bubble in said liquid of said core layer.