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. 22, 1977
Filed:
Jun. 30, 1976
Applicant:
Inventors:
Howard S Levine, San Jose, CA (US);
Robert Winter, Dix Hills, NY (US);
Assignee:
Grumman Aerospace Corporation, Bethpage, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350295 ;
Abstract
A variable focus mirror comprising a uniform elastic disk having a mirror finish on one face thereof, which is urged against an annular fulcrum concentric with the disk by a uniform force applied at the rim of the disk. This force causes the flat disk to be flexed into a substantially spherical, nearly parabolic shape. The magnitude of the force applied controls the degree of flexure and hence the focal length of the spherical mirror. For laser beam focusing the materials are selected to be able to withstand the laser energy being reflected.