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:
Nov. 25, 2014
Filed:
May. 17, 2012
Lawrence M. Rice, Hillsboro, NH (US);
Thomas Tessnow, Weare, NH (US);
Lawrence M. Rice, Hillsboro, NH (US);
Thomas Tessnow, Weare, NH (US);
OSRAM SYLVANIA Inc., Danvers, MA (US);
Abstract
A headlight produces low-beam and high-beam outputs without requiring moving parts. Low-beam LED array () near first focus (F) of ellipsoidal reflector () directs light laterally against reflector () which directs it toward second focus (F) of reflector. Cut-off edge () near second focus forms a bright/dark edge in low-beam output. Cut-off edge is a vertically-oriented light baffle () whose top edge forms the bright/dark edge. Cut-off edge is a horizontal light occluding member () whose front edge () forms bright/dark edge. Cut-off edge is a corner of a heat sink (). Cut-off edge is located near focal point of lens () which transmits low-beam output with a bright/dark edge. Stationary folding mirror () near second focus of reflector directs light from high-beam LED array () to lens (). Additive light reflecting from folding mirror () transmitting through lens () forms high-beam output lacking a bright/dark edge.