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. 09, 1999
Filed:
Jun. 26, 1997
Applicant:
Inventors:
Richard E Forkey, Westminster, MA (US);
Brian E Volk, Holden, MA (US);
Assignee:
Precision Optics Corporation, Gardner, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
600162 ; 600176 ; 600171 ;
Abstract
An endoscope with an eyepiece and an objective lens system used for observing an object in an environmental media. The distal most optical element in the objective lens system is a spherical lens. The spherical lens has a curved distal surface that contacts the environmental media. The objective lens system facilitates the control of the distortion in an image generated by the objective lens system to approximate a reverse distortion of the eyepiece system measured as the distortion in an image generated distally of the eyepiece system of an object positioned proximally of the eyepiece system.