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. 11, 1990
Filed:
Apr. 28, 1989
Applicant:
Inventor:
Masahiro Chiba, Hachiouji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350432 ; 350443 ;
Abstract
An optical system for endoscopes to be used for observing the interior of pipes is provided with an imaging optical system including at least one convex or concave asphrical surface and a reflecting mirror arranged on the front side of the imaging optical system and having a reflecting surface shaped like a spherical or aspherical surface. The optical system for endoscopes can form a bright image which has little aberration and can also render the distal end portion of the endoscope finer.
Chiba, Masahiro. (1990). Optical system for endoscopes to be used for observing the interior of (U.S. Patent No. 4976524). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4976524
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile