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:
Sep. 12, 2006
Filed:
May. 27, 2003
Shulian Zhang, Beijing, CN;
Yan LI, Beijing, CN;
Yingchun Ding, Beijing, CN;
Jun Zhu, Beijing, CN;
Tsinghua University, Beijing, CN;
Abstract
A frequency splitting laser micrometer for measuring a displacement of an object. The laser micrometer includes a frequency splitting laser directing a first frequency splitting laser beam to the object via a laser output mirror at one end of the laser. The first laser beam is reflected thus outputting a second frequency splitting laser beam, such that a feedback cavity is created, wherein a frequency of the second laser beam is decided by a cavity length of said feedback cavity and accordingly the displacement of the object. A detecting and signal processing unit receives said first and second frequency splitting laser beams and measures the displacement of the object according to interference effects of said first and second laser beams.