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:
May. 06, 2003
Filed:
Oct. 23, 2000
Applicant:
Inventors:
David R. Shafer, Fairfield, CT (US);
Wilhelm Ulrich, Aalen, DE;
Assignee:
Carl-Ziess-Stiftung, Heidenheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 3/00 ;
U.S. Cl.
CPC ...
G02B 3/00 ;
Abstract
An optical projection lens system comprising in direction of propagating radiation: a first lens group having positive refractive power, a second lens group having negative refractive power and comprising a waist with a minimum diameter of the propagating radiation, and a further lens arrangement with positive refracting power, which follows the second lens group, wherein at least one lens of the projection lens system, which is arranged in front of the waist comprises an aspherical surface.