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. 24, 1993
Filed:
May. 30, 1991
Applicant:
Inventor:
Charles W Reno, Cherry Hill, NJ (US);
Assignee:
General Electric Company, Phila., PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
359669 ; 359710 ; 369112 ; 369122 ;
Abstract
In an optical system including a laser diode with astigmatism such that the apparent source position in two orthogonal axes each normal to the beam direction differ, a beam prism expander and a collimating lens positioned between the diode and expander, the collimated lens is positioned relative to the laser such that the radius of curvature of the light beam exiting the beam expander in the two axes is identical.