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:
Oct. 02, 2007
Filed:
Mar. 15, 2004
Petrus Adrianus Josephus Holten, Winterswijk, NL;
Petrus Adrianus Josephus Holten, Winterswijk, NL;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
A luminaire for indirect lighting has a main reflector, a counter-reflector with a light emission window in a plane T. The counter-reflector and reflector are oppositely arranged. The main reflector has a reflecting surface built up from a plurality of facets n having a curvature in cross-section. The curvature of each respective facet n is such that light coming from a light emission window and hitting a given facet n is reflected through an angle of reflection Φ<=α−β, in which, β is a smallest angle of reflection with the plane T at which glare is just counteracted, and αis a greatest angle of reflection with the plane T at which reflected light just clears the counter-reflector.