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:
Mar. 17, 2015
Filed:
Aug. 10, 2010
Alexander Marc Van Der Lee, Venlo, NL;
Mark Carpaij, Hertogenbosch, NL;
Holger Moench, Vaals, NL;
Marcel Schemmann, Maria Hoop, NL;
Alexander Marc Van Der Lee, Venlo, NL;
Mark Carpaij, Hertogenbosch, NL;
Holger Moench, Vaals, NL;
Marcel Schemmann, Maria Hoop, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The present invention refers to a method of operating a self-mixing interference sensor and a corresponding self-mixing interference sensor device. In the method the laser () of the device is controlled to periodically emit a laser pulse followed by an emission period of laser radiation having a lower amplitude. The pulse width of the laser pulse is selected such that the pulse after reflection at the object () re-enters the laser () during the emission period of laser radiation with lower amplitude. The corresponding SMI signal has an increased signal to noise ratio.