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. 09, 2017
Filed:
Mar. 15, 2013
Applicants:
Lorri L. Watson, Campbell, CA (US);
Nikon Corporation, Tokyo, JP;
Inventors:
Alec Robertson, Palo Alto, CA (US);
Douglas C. Watson, Campbell, CA (US);
Alexander Cooper, Belmont, CA (US);
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 3/08 (2006.01); F16H 35/06 (2006.01); G01S 7/481 (2006.01); G01S 7/497 (2006.01); G02B 7/08 (2006.01); G02B 7/18 (2006.01);
U.S. Cl.
CPC ...
F16H 35/06 (2013.01); G01S 7/4813 (2013.01); G01S 7/4818 (2013.01); G01S 7/4972 (2013.01); G02B 7/08 (2013.01); G02B 7/1805 (2013.01); Y10T 29/49 (2015.01); Y10T 74/18888 (2015.01);
Abstract
Focus arrangements for laser radar and other applications provide compensation of orientation-dependent gravitational forces. A linear stage can be preloaded and provided with balanced linear encoders so that gravitational force induced pitch, yaw, and roll can be reduced, detected, or compensated. Alternatively, movable focus elements can be secured to actuator driven spring assemblies that are controlled to compensate orientation-dependent gravitational forces.