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:
Jun. 11, 2013
Filed:
Oct. 06, 2009
Ties Van Bommel, Horst, NL;
Eduard J. Meijer, Eindhoven, NL;
Rifat A. M. Hikmet, Eindhoven, NL;
Hendrik A. Van Sprang, Waalre, NL;
Marcus A. Verschuuren, Tilburg, NL;
Ties Van Bommel, Horst, NL;
Eduard J. Meijer, Eindhoven, NL;
Rifat A. M. Hikmet, Eindhoven, NL;
Hendrik A. Van Sprang, Waalre, NL;
Marcus A. Verschuuren, Tilburg, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention relates to light sensors for measuring light characteristics. In particular, the present invention relates to a light directionality sensor that is capable of measuring light characteristics such as the light direction, light collimation, and light distribution. According to a first aspect of the present invention there is provided a light directionality sensor comprising a photo-sensor (), comprising a plurality of photo-sensitive elements (), and a plurality of light-absorbing light selecting structures () arranged on the photo-sensor so as to form an array of light-absorbing light selecting structures. In the array of light-absorbing light selecting structures, a succession of at least some of the light-absorbing light selecting structures has varying structural characteristics. The varying structural characteristics is achieved by each individual structure of the succession being formed such that it allows light within a different angle interval with respect to the array to be sensed. Further, according to a second aspect of the invention, there is provided a method for forming a light sensor according to the first aspect of the present invention.