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:
Aug. 17, 1999
Filed:
Oct. 27, 1997
Applicant:
Inventors:
Robert Lawrence Sinclair, East York, CA;
Russell M Hudyma, San Ramon, CA (US);
Assignee:
Wescam Inc., Flamborough, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359689 ; 359676 ; 359691 ; 359726 ; 359729 ;
Abstract
A catadioptric zoom lens assembly has a catoptric objective lens group with a forwardly facing primary mirror and a rearwardly facing first surface reflecting secondary mirror located forwardly of the primary mirror to create an intermediate image forwardly of the primary mirror. A zoom relay lens group is located optically rearwardly of the intermediate image and has a stationary field lens subgroup, a first movable lens subgroup and a second movable lens subgroup.