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:
Sep. 21, 1982
Filed:
Jul. 10, 1979
Applicant:
Inventors:
Nobuo Yamashita, Tama, JP;
Miwako Maeda, Hino, JP;
Assignee:
Olympus Optical Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128-6 ;
Abstract
An illumination optical system for use in an endoscope comprises a glass pane disposed in front of a source of illuminating light and which is centrally defined with a reflecting surface which is inclined with respect to the optical axis of the source. Light passing through the source in alignment with the optical axis thereof illuminates a near object while light passing through the source offset from its optical axis illuminates a far object.