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:
Jul. 24, 1990
Filed:
Mar. 30, 1989
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9612 ; 350 9615 ; 350 9618 ;
Abstract
A tapered optical waveguide is disclosed, which comprises a substrate having a plane surface for forming a waveguide layer, whose refractive index is higher than that of the substrate, which substrate is transparent with respect to guided light, and a waveguide layer formed on the plane surface of the substrate, in which light taken out on the substrate side is focused so as to form a small spot at a position distant from the interface between the waveguide layer and the substrate.
Takeda, Tadashi. (1990). Tapered optical waveguide, waveguide type optical head using same and (U.S. Patent No. 4943129). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4943129
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile