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:
Feb. 19, 2013
Filed:
Jun. 23, 2008
Marcel Franz Christian Schemmann, Mario Hoop, NL;
Armand Pruijmboom, Wijchen, NL;
Silvia Maria Booij, Eindhoven, NL;
Klaus Peter Werner, Wijchen, NL;
Marcel Franz Christian Schemmann, Mario Hoop, NL;
Armand Pruijmboom, Wijchen, NL;
Silvia Maria Booij, Eindhoven, NL;
Klaus Peter Werner, Wijchen, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to an optical sensor module () for a measuring device. Said module comprises at least one optical sensor () including a diode laser () having a laser cavity for generating a measuring beam, the diode laser being attached to a substrate (), converging means () (such as a lens). During measuring, such converging means () converges the measuring beam in an action plane and converges in the laser cavity the measuring beam radiation that has been back-scattered by an object to generate a self-mixing effect and means for measuring the self-mixing effect. Later means comprise a photo diode () and an associated signal processing circuitry. According to an essential aspect of the invention, that the diode laser () is configured to emit laser radiation of a wavelength for which the substrate () being attached to the diode laser () is transparent. This configuration leads to an essentially simple (and therefore cheap) sensor module.