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. 18, 2013
Filed:
May. 13, 2009
Denis Joseph Carel Van Oers, Eindhoven, NL;
Rob Franciscus Maria Van Elmpt, Eindhoven, NL;
Denis Joseph Carel Van Oers, Eindhoven, NL;
Rob Franciscus Maria Van Elmpt, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The present invention relates to an optical element () for collimating light from a light source (), said optical element () having an in-coupling side () arranged to receive said light, an out-coupling side () arranged to allow for emission of collimated light, and an element body extending from said in-coupling side () to said out-coupling side (), the element body having a cross-section perpendicular to an optical axis (z) defined by an x-5 axis and a y-axis being perpendicular to each other, wherein said optical element () has an x-curvature along said x-axis and a y-curvature along said y-axis, said y-curvature being greater than said x-curvature, thereby enabling for a light distribution of said collimated light emitted from said out-coupling side () to have a cross-section of an asymmetric shape (CE) perpendicular to said optical axis (z). The present invention also relates to a lighting system () comprising such an optical element (). An advantage with the present invention is that it may provide asymmetric light distribution with an increased beam-width difference in two perpendicular viewing directions.