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:
Jun. 28, 2016
Filed:
Apr. 16, 2013
Koninklijke Philips N.v., Eindhoven, NL;
Teunis Willem Tukker, Eindhoven, NL;
Willem Lubertus Ijzerman, Oss, NL;
Cornelia Roline Prins, Eindhoven, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
A circular symmetric optical element for redirecting light which is emitted by a light source through a wavelength converting element, wherein the emitted light have an average color cand a wavelength distribution depending on an emission angle from the wavelength converting element. Light having the average color chave an emission angle t. The optical element comprises: a first optical portion configured to receive and redirect light having emission angles from the wavelength converting element lower than tA, and a second optical portion configured to receive and redirect light having emission angles from the wavelength converting element higher than t, wherein the first and second optical portions are individually configured such that for light of each selected out-coupling angle of the optical element, there is light received and redirected by the first optical portion to the selected out-coupling angle of the optical element, and corresponding light received and redirected by the second optical portion to the selected out-coupling angle from the optical element such that the total light beam emitted from the optical element as seen in the far field have a homogeneous color.