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. 16, 2000
Filed:
Oct. 14, 1997
Applicant:
Inventor:
Peter Drewling, Otter, DE;
Assignee:
LAP GmbH Laser Applikationen, Luneburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01P / ; H01S / ;
U.S. Cl.
CPC ...
356 285 ; 356 28 ; 372 34 ; 372 33 ;
Abstract
A method for speed measurement according to the laser-Doppler-principle with which with the help of a beam splitter the light beam of a laser is converted into two part beams crossing on or in the measured object and with the help of an optical receiver the spectral maximum of the intensity modulation of the reflected light is measured. A Koster prism is used as a beam splitter such that the part beams formed intersect at the desired angle on or in the measured object.