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:
Jul. 04, 2017
Filed:
Jan. 15, 2015
Applicant:
Csem Centre Suisse D'electronique ET DE Microtechnique Sa—recherche ET Développement, Neuchâtel, CH;
Inventor:
David Hasler, Neuchâtel, CH;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/36 (2006.01); G01S 3/783 (2006.01); G01S 5/16 (2006.01);
U.S. Cl.
CPC ...
G01D 5/36 (2013.01); G01S 3/7835 (2013.01); G01S 5/16 (2013.01);
Abstract
A positioning system, in particular, positioning in six dimensions of a sensor with respect to an assembly composed of a multitude of LEDs, is provided. The sensor is a shadow sensor and has a mask and a 2D imager. By recording the shadow of the mask cast by each LED on the imager, and by properly multiplexing the LEDs, the system can compute the 6D position of the LED assembly with respect to the shadow sensor. This computation is based, in part, on treating the shadow of the mask cast on the imager as the equivalent of the projection of light in a pinhole camera.