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. 04, 1989
Filed:
Dec. 18, 1987
Kenji Kimura, Tachikawa, JP;
Kenichi Kikuchi, Hachiohji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
In an optical endoscope having an image guide transmitting to the exit end surface an optical image formed by an objective optical system, a video signal of an imaging circuit built in an externally fitted camera is displayed by a displaying device so that, even in case the optical image range of the imaging surface is different, the displayed video signal may be of a proper brightness by a light adjusting element variably controlling the illuminating light amount fed to the optical endoscope on the basis of the output signals of a detector for detecting the optical image range on the imaging surface and a detector for detecting the level of the video signal.