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:
Nov. 16, 2004
Filed:
May. 03, 2002
Applicant:
Inventors:
Assignee:
GSI Lumonics Corporation, Billerica, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 1/106 ;
U.S. Cl.
CPC ...
G01B 1/106 ;
Abstract
To determine the uniformity of an optical component, a light beam is directed to impinge on a surface of an optical component at each of multiple points. A characteristic of the light beam impinging on the optical component surface at each of the multiple points is modified so as to have multiple different values. Light from the impinging light beam that passes through the optical component at each of the multiple points, with the light beam characteristic at each of the multiple different values, is detected. The non-uniformity of the optical component is determined based on the detected passing light.