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:
Apr. 06, 1999
Filed:
Jul. 09, 1997
Applicant:
Inventor:
Richard J Heimer, Los Angeles, CA (US);
Assignee:
Radiant Optics, Inc., Los Angeles, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359665 ;
Abstract
A low cost image transmission optical system for an inflexible type endoscope comprising two rod-like lenses disposed in a front-to-back symmetrical manner, each rod-like lens consisting of two correcting lenses encapsulating therebetween a fluid; said fluid, for example, may be water or an optical liquid. The said encapsulated fluid image transmission optical system being arranged that the image brightness and its chromaticity, curvature of field and astigmatic residuals are favorably corrected, and that the said arrangement is not susceptible to breakage when a bending load is applied to the shaft of the endoscope.