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. 26, 1991
Filed:
Jul. 06, 1989
Allen W Case, Jr, Amsterdam, NY (US);
Carl M Penney, Saratoga Springs, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
An input/output port for a lasing medium to minimize wavefront distortion of a coherent light beam is described. The input/output port includes an end surface integral the medium and a first port surface integral the end surface. The first port surface is substantially perpendicular to a plane normal to the longitudinal axis extending through the medium so that each ray of a beam of coherent electromagnetic radiation lying in a plane of a thickness of the beam may impinge on the port surface at a substantially equal angle with respect to reference planes normal to the port surface at the points of impingement.