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:
May. 31, 2011
Filed:
May. 14, 2007
Lucius Theodorus Vinkenvleugel, Eindhoven, NL;
Paul Philip Thursfield, Eindhoven, NL;
Denis Joseph Carel Oers, Bocholt, BE;
Lucius Theodorus Vinkenvleugel, Eindhoven, NL;
Paul Philip Thursfield, Eindhoven, NL;
Denis Joseph Carel Oers, Bocholt, BE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention provides a lighting system with a color indicator surface (). The surface receives light via a cover () of the lighting system, mainly through internal reflection. Hence, the light from the light sources, here at least two different colored LEDs (), is guided away from the main light emitting surface (), such that well-mixed light with a lower intensity may be used to determine the color of the light. The color indicator surface may be a surface () of the cover (), or may be a surface () of a separate outer part (). The lighting system may be used to illuminate objects in houses, shops and so on. The color indicator surface provides a convenient and easily accessible color reference.