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. 12, 1989
Filed:
Aug. 20, 1987
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G02B / ;
U.S. Cl.
CPC ...
369112 ; 369122 ; 350 9612 ;
Abstract
An integrated optical head includes a substrate and an optical waveguide formed on a surface of one side of a substrate. Light is directed to the optical waveguide and a grating structure is provided for deflecting light propagating in the optical waveguide toward the substrate. A distributed refractive index lens is formed in the substrate for condensing the light passing through the substrate after the deflection toward an article.