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:
Aug. 25, 1981
Filed:
Nov. 07, 1978
Applicant:
Inventors:
Nobuo Yamashita, Tama, JP;
Miwako Maeda, Hino, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350410 ;
Abstract
A photo eyepiece for endoscopes comprising at least two cemented lens components, i.e., a first cemented lens component and a second cemented lens component, having a large numerical aperture and, in spite of this merit, corrected very favorably in characteristics of spherical aberration, lateral chromatic aberration and curvature of field.