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:
Sep. 27, 2022
Filed:
Mar. 03, 2022
Sioptica Gmbh, Jena, DE;
André Heber, Weimar, DE;
siOPTICA GmbH, Jena, DE;
Abstract
An illuminating apparatus designed for a display screen and operable in at least two operating modes Band Band/or at least one operating mode Bfor illuminating separately two or simultaneously both, at least partially disjoint angular ranges Wand W, comprising a planar backlight unit, which in a first alternative radiates light into the said restricted angular range W, and in a second alternative radiates light into a restricted angular range W, a plate-shaped light guide that is arranged in front of the backlight unit and features, on at least one of the large surfaces and/or within its volume, outcoupling elements, wherein the light guide is transparent to at least 70% of the light originating from the backlight unit, and light sources are arranged laterally on at least one of the narrow edges of the light guide.