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, 2008
Filed:
Mar. 02, 2005
Ludovicus Johannes Lambertus Haenen, Eindhoven, NL;
Augustinus Gregorius Henricus Meijers, Eindhoven, NL;
Edwin P. H. Van Lier, Eindhoven, NL;
Ludovicus Johannes Lambertus Haenen, Eindhoven, NL;
Augustinus Gregorius Henricus Meijers, Eindhoven, NL;
Edwin P. H. Van Lier, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A light-guiding device having a coupling-in surface () for coupling-in light radiation substantially in a first main direction () perpendicular to said coupling-in surface (), and having a coupling-out surface () for coupling-out light radiation substantially in a second main direction () perpendicular to said coupling-out surface. The coupling-out surface has other dimensions than the coupling-in surface (). The device comprises a number of plate-like light-guiding members (), each having a substantially rectangular lateral coupling-in surface and a substantially rectangular lateral coupling-out surface (). A number of the plate-like light-guiding members are stacked together to create the coupling-in surface () formed by said lateral coupling-in surfaces abutting each other at their long sides. The coupling-out surface () is created by said lateral coupling-out surfaces abutting each other at their short sides.