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:
Jan. 15, 2019
Filed:
Nov. 25, 2014
Philips Lighting Holding B.v., Eindhoven, NL;
Ruslan Akhmedovich Sepkhanov, Eindhoven, NL;
Marcellinus Petrus Carolus Michael Krijn, Eindhoven, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
A luminaire comprising: a light source (); an exit window () for light from the light source; and a diffuser () at the exit window for diffusing the light. The diffuser comprises a plurality of micro-optical elements (). Each micro-optical element is adapted to redirect light from the light source, so that the redirected light from each element emerges from the diffuser at a respective predetermined polar angle (Θ). The plurality of micro-optical elements comprise first micro-optical elements, which redirect light from the light source into a first range of polar angles, wherein the first optical elements occupy a greater proportion of the area of the diffuser in a first neighborhood than in a second neighborhood, and wherein the first neighborhood receives less light from the light source than the second neighborhood. Also provided is a method of designing and manufacturing a diffuser for such a luminaire.