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:
Jun. 14, 1983
Filed:
Jan. 06, 1981
Kimihiko Nishioka, Hachiouji, JP;
Nobuo Yamasita, Hachiouji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A single-lens reflex optical system for endoscopes comprising an observing optical system, a light-splitting means and a photographing optical system, the observing optical system comprising a diverging front lens group arranged on a first optical axis extending in parallel with the longitudinal direction of an endoscope and having negative refractive power, a positive lens group arranged on the first optical axis, and a first converging rear lens group arranged on the first optical axis and having positive refractive power, the light-splitting means arranged between the positive lens group and first converging rear lens group, the photographing optical system comprising the diverging front lens group, the positive lens group, and a second converging rear lens group arranged on a second optical axis deflected by the light-splitting means and having positive refractive power, the single-lens reflex optical system enabling to make diameters of lenses small and, consequently, enabling to make the diameter of distal end of endoscope small.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile