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:
Dec. 10, 2013
Filed:
Apr. 25, 2011
Hong Luo, Andover, MA (US);
Miguel Galvez, Danvers, MA (US);
Hong Luo, Andover, MA (US);
Miguel Galvez, Danvers, MA (US);
OSRAM SYLVANIA Inc., Danvers, MA (US);
Abstract
A lighting module has a base, a top, a longitudinal axis from the base's center to the top's center, and a lateral edge surrounding the axis. Solid state light sources at the base emit excitation light, having an excitation wavelength and an angular distribution centered about the axis, toward the top. A lens defines a lateral edge of the module, which extends from the base to the top and reflects the excitation light. A phosphor surface of the module, shaped as a funnel having a wide end proximate the top and a narrow end proximate the base, receives and absorbs the excitation light, producing phosphor light that exits the module through the lateral edge. The phosphor light's wavelength is greater than the excitation wavelength, and has an angular distribution at each point on the phosphor surface centered about a local surface normal with respect to the phosphor surface.