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:
Feb. 20, 2007
Filed:
Nov. 21, 2002
Petrus Adrianus Josephus Holten, Winterswijk, NL;
Petrus Adrianus Josephus Holten, Winterswijk, NL;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
A luminaire () comprising a concave reflector () enclosing a hollow space () and defining with an outer edge () a light emission window (). The luminaire can accommodate at least two lamps (). The luminaire further comprises an optically semi-permeable wall () positioned in between the two lamps and dividing the hollow space into chambers (), and a counter-reflector () provided opposite the reflector. Light originating from the lamps can only leave the luminaire through the light emission window after passing through the semi-permeable wall. It is thus possible to obtain homogeneously mixed light as well as to obtain light of equal intensity from the various chambers, also when only one lamp is operating or the two lamps operate at different intensities.