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. 01, 2014
Filed:
Sep. 09, 2010
Rifat Ata Mustafa Hikmet, Eindhoven, NL;
Ties Van Bommel, Eindhoven, NL;
Yongfeng NI, Eindhoven, NL;
Rifat Ata Mustafa Hikmet, Eindhoven, NL;
Ties Van Bommel, Eindhoven, NL;
Yongfeng Ni, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The invention relates to a lighting apparatus () for generating a light pattern. A light source () generates a light beam () for being directed onto a liquid crystal cell (). The liquid crystal cell () comprises a periodic structure (). If voltage is applied to the liquid crystal cell () by a voltage source (), a period phase pattern is generated. The liquid crystal cell () and the light source () are adapted such that multiple separate light beams () are generated in different directions by diffraction at the generated periodic phase pattern, wherein the multiple separate light beams () form the light pattern (). Since the light pattern is generated by diffraction at the periodic phase pattern, which is modifiable by applying voltage, different light patterns can be generated, in particular, for decorative purposes, in a technically relatively simple way.