US 11,808,967 B2
Light deflecting device, lighting device and use
Andreas Neyer, Iserlohn (DE); and Helmut Frank Ottomar Müller, Düsseldorf (DE)
Assigned to temicon GmbH, Dortmund (DE)
Filed by Andreas Neyer, Iserlohn (DE); and Helmut Frank Ottomar Müller, Düsseldorf (DE)
Filed on Apr. 5, 2019, as Appl. No. 16/376,782.
Application 16/376,782 is a continuation of application No. PCT/EP2017/075215, filed on Oct. 4, 2017.
Claims priority of application No. 10 2016 118 884.0 (DE), filed on Oct. 5, 2016.
Prior Publication US 2019/0235153 A1, Aug. 1, 2019
Int. Cl. G02B 6/42 (2006.01); F21V 8/00 (2006.01); G02B 27/09 (2006.01)
CPC G02B 6/0068 (2013.01) [G02B 6/0036 (2013.01); G02B 6/4214 (2013.01); G02B 27/0961 (2013.01); G02B 27/0972 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A window pane comprising a light deflecting device, the light deflecting device comprising:
a flat, transparent light guide, and
a transparent cover layer which is applied to the light guide in a flat manner at least partially,
wherein a microstructure is formed between the light guide and the cover layer for outcoupling light incoupled into the light guide and wherein the microstructure comprises a plurality of structural elements which are formed as circular cylindrical elevations, wherein the microstructure is formed on the surface of the cover layer facing the light guide, wherein the angle included by the height and the cross-sectional diagonal of the structural elements is smaller than or equal to the critical angle of the total reflection in the light guide and/or the cover layer, wherein the circular surfaces of the circular cylindrical elevations lie directly on the surface of the light guide, wherein the circular cylindrical elevations each have a diameter of at least 20 μm and at most 100 μm and a height of at least 20 μm and at most 10 μm, and wherein the structural elements are designed in such a way that light coupled into the light guide is substantially outcoupled at the cylinder lateral surfaces of the structural elements.