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:
Apr. 02, 1985
Filed:
Dec. 27, 1982
Applicant:
Inventor:
Yoshikazu Nishiwaki, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03H / ;
U.S. Cl.
CPC ...
350-36 ; 350-385 ;
Abstract
An optical system comprises a composite block made of a bonded assembly of unit glass blocks, some of which are coated with a thin film on selected surfaces to provide predetermined light transmission characteristics, lenses and a recording material. Other glass blocks are spaced apart from the composite block. A thin substrate is provided having recesses in which the respective blocks are to be fixed. The entire optical system is embedded in a transparent molding material.
Nishiwaki, Yoshikazu. (1985). Optical system (U.S. Patent No. 4508420). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4508420
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile