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. 10, 2002
Filed:
Sep. 28, 2000
Naotake Mitsumori, Omiya, JP;
Fuji Photo Optical Co., Ltd., Omiya, JP;
Abstract
An endoscope having an objective lens drive mechanism for an optical objective lens system, which is incorporated into a rigid tip end section of an elongated insertion instrument of the endoscope and provided with at least two movable lens groups which are movable in the direction of optical axis of the objective lens system. Ring members are connected to movable lens frames which support the respective movable lens groups. A cam pin is projected radially on the inner periphery of each ring member, while a cam shaft which is formed with a plural number of cam grooves on its circumferential surface is located in parallel relation with the optical objective lens system. The members are fitted on the cam shaft with the respective cam pins in engagement with the cam grooves. The cam shaft is rotated in forward and reverse directions by a drive means.