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.:

US 8621931 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 07, 2014

Filed:

Mar. 22, 2011
Applicants:

Poh Boon Phua, Singapore, SG;

Yu Fu, Singapore, SG;

Inventors:

Poh Boon Phua, Singapore, SG;

Yu Fu, Singapore, SG;

Assignee:

DSO National Laboratories, Singapore, SG;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 29/04 (2006.01); G01B 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A laser vibrometer makes non-contact measurements of vibrations of a target. A laser produces a laser beam, and a beamsplitter splits the laser beam into a reference beam and a first target beam. A first frequency shifter/splitter splits the first target beam into a pair of target beams each having a frequency different than a frequency of the other target beams. The target beams are reflected from the target to a detector, and the reference beam is combined with the target beams such that the detector receives the target beams and reference beam together.


Find Patent Forward Citations

Phua, Poh. (2014). Multipoint laser vibrometer with single detector (U.S. Patent No. 8621931). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8621931

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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