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. 15, 1990
Filed:
Nov. 17, 1988
Applicant:
Inventor:
Gerard L Rafanelli, Fountain Valley, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356124 ; 2502011 ; 350613 ;
Abstract
A laser source 28 and curvature matching optics 30 cooperate to generate a probe beam 32 having a generally Gaussian phase front with a given radius of curvature. The probe beam is reflected off of the surface of a primary mirror 12 and the differences, if any, between the radii of curvature of the probe beam 32 and mirror surface is detected by detector array 38. Suitable feedback circuitry can be employed to drive the actuators of segments 16-22 to provide the mirror 12 with the desired figure.