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. 03, 2015
Filed:
Sep. 17, 2007
Marco Van As, Eindhoven, NL;
Ralph Hubert Peters, Maastricht, NL;
Marco Van As, Eindhoven, NL;
Ralph Hubert Peters, Maastricht, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The invention provides a lamp with adjustable beam cut-off, useful for e.g. vehicle headlamps. The lamp comprises a solid-state light sourceand a reflector, as well as a movable beam limiter. To adjust the cut-off, the beam limitermay be moved by an actuator. An advantage is that the beam limiterreflects incident light into the emitted beam instead of absorbing it, which increases efficiency. Furthermore, because the reflectorand also the beam limitermay be positioned very close to the light source, which may be a LED or a laser diode, they may be flat and very small. Both circumstances ensure that the beam cut-off may be adjusted very quickly.