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:
May. 10, 2022
Filed:
Feb. 02, 2018
Nanocomp Oy Ltd, Finland, FI;
NANOCOMP OY LTD, Lehmo, FI;
Abstract
A light guide () comprises a light guide plate () with an illumination region (). The light guide plate has a first main surface () and a second main surface () opposite to the first main surface, and comprises an out-coupling arrangement () for coupling light () propagating in the light guide plate out of the light guide plate through the first and/or the second main surface in the illumination region. The out-coupling arrangement comprises first out-coupling stripes () extending over the illumination region, each first out-coupling stripe defining a horizontal extension of a first light channel () in the light guide plate and being configured to couple light propagating substantially in a first direction along the first light channel, out of the light guide plate. Adjacent first out-coupling stripes are separated by an intermediate region () with light coupling properties substantially different from those of the first out-coupling stripes.