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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.:

US 5159380 B1

PDFFull Text
Date of Patent:
Oct. 27, 1992

Filed:

Jul. 11, 1991

Photographing light quantity controller for endoscope

Applicant:
Inventors:

Katsuhiko Furuya, Tokyo, JP;

Masaaki Nakasima, Tokyo, JP;

Takayuki Enomoto, Tokyo, JP;

Tadashi Takahashi, Tokyo, JP;

Assignee:

Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;

Attorney:

Sandler, Greenblum and Bernstein

Primary Examiner:

W B Perkey

Int. Cl.
CPC ...
G03B / ; A61B / ;
U.S. Cl.
CPC ...
354415 ; 354416 ; 354 62 ; 128-6 ; 3152 / ;
Abstract

A photographing light quantity controller for an endoscope, which is used to control the quantity of illuminating light when a photograph is to be taken through the endoscope. The photographing light quantity controller comprises a device for supplying light for illuminating an object to be viewed by the endoscope, a photoelectric conversion device for converting into an electric signal, a brightness level of exposure light that is applied to a photographic plane in a photographing device after being reflected from the object, and a device for integrating the output from the photoelectric conversion device and outputting the resulting integral value. The photographing light quantity controller further comprises a device for outputting a numerical value corresponding to a quantity of exposure light which is to be applied to the photographic plane, a device for converting the integral value into a numerical value on the same scale as that of the numerical value of the exposure quantity, and a device for deciding an exposure quantity, and a device for deciding an exposure time by comparing the numerical value of the exposure quantity and the output value from the integral value converting device.

Find Patent Forward Citations

Furuya, Katsuhiko. (1992). Photographing light quantity controller for endoscope (U.S. Patent No. 5159380). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5159380

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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