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:
Oct. 03, 1989
Filed:
Jul. 05, 1988
Tadashi Kato, Hachioji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
In this invention, an automatic adjusted light switching circuit which can feed an illuminating light to an endoscope is provided with a light source emitting an illuminating light to illuminate an object. The illuminating light has the light amount controlled by an iris driving circuit. An adjusted light controlling circuit for a still camera outputs a control signal controlling the iris driving circuit with a photometric signal. An adjusted light controlling circuit for a video camera outputs to the iris driving circuit a control signal for making a video signal of the most suitable brightness from a video signal obtained from a solid state imaging device imaging the object image. Either one of the control signals output by the adjusted light controlling circuit for the still camera and the adjusted light controlling circuit for the video camera is slected by a switching circuit and is input into the iris driving circuit.