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. 19, 2013
Filed:
Mar. 11, 2009
Martin Jacobus Johan Jak, Eindhoven, NL;
Theodorus Johannes Petrus Van Den Biggelaar, Eindhoven, NL;
Eduard Johannes Meijer, Eindhoven, NL;
Eugene Timmering, Eindhoven, NL;
Martin Jacobus Johan Jak, Eindhoven, NL;
Theodorus Johannes Petrus Van Den Biggelaar, Eindhoven, NL;
Eduard Johannes Meijer, Eindhoven, NL;
Eugene Timmering, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
Proposed is a light sensor (), comprising at least one wavelength selective photo-detector (), a lens () and an aperture ().The wavelength selective photo-detector allows detecting light within a predefined wavelength range falling on the sensor. The lens project light on the photo-detector and the aperture defines a field of view of the light sensor. The photo-detector (), the lens (), and the aperture () are arranged in a telecentric configuration. Advantageously, this allows light to impinge on the wavelength selective photo-detector within a predefined range of angles irrespective of the direction of the light incident on the aperture, thus removing the angle dependent response of the wavelength selective photo-detector.