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:
Mar. 14, 2000
Filed:
Oct. 19, 1998
Applicant:
Inventors:
Makoto Tomioka, Hachioji, JP;
Sayaka Koga, Hachioji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362574 ; 362268 ; 385 33 ; 600177 ; 600178 ;
Abstract
An illumination system for endoscopes includes a light source device having an arc discharge lamp and a light source optical system; a light guide cable; and a rigid endoscope provided with a light guide on a scope side and an objective optical system, using lenses as a relay optical system. The light source optical system projects the light-emitting section of the arc discharge lamp on the entrance face of the light guide cable at a magnification of approximately 1.times., and the light guide cable satisfies the following conditions: