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:
Feb. 27, 2001
Filed:
Oct. 20, 1999
Applicant:
Inventors:
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/730 ; G02B 3/02 ;
U.S. Cl.
CPC ...
G02B 2/730 ; G02B 3/02 ;
Abstract
An astigmatic and non-circular diverging input laser beam is converted into a collimated and circular output laser beam with its astigmatism corrected using a single aspherical lens. The input surface has a concave aspherical profile in the transverse direction and a convex aspherical profile in the longitudinal direction respectively for astigmatism correction. The output surface has a convex aspherical profile in the transverse direction and a non-curved profile in the longitudinal direction respectively for collimation and circularization of the final output laser beam.