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:
Nov. 07, 2000
Filed:
May. 25, 1999
Masaaki Morizumi, Omiya, JP;
Fuji Photo Optical Co., Ltd., Saitama, JP;
Abstract
A front end lens 11 of a pair of objective lenses 32R, 32L disposed the object-side end face of a front end part 1 of a stereoscopic endoscope has a so-called D-cut lens form in which both side portions of a spherical lens are cut off, whereby spaces for arranging illumination windows 13, lens surface washing nozzles 15, and heads of fastening screws 14 for fastening the front end part 1 to a front end part main body 2 are secured at the front end face of the front end part 1, while keeping its function of yielding a sufficient angle of convergence .theta.. A positioning pin 16 formed in the front end part main body 2 is inserted into a pin insertion groove 17 formed in a protrusion 12 of the front end part 1 at an eccentric position of the protrusion 12, whereby both members 1, 2 are inhibited from rotating relative to each other, and the relative positional relationship between the front end lens 11 and the pair of objective optical systems 32R, 32L can reliably be fixed.