US 12,352,423 B2
Cluster of lighting devices, display and method of manufacture
Benno Spinger, Aachen (DE); Dirk Vanderhaeghen, Wilrijk (BE); Marc Droegeler, Aachen (DE); Floris Maria Hermansz Crompvoets, Bunde (NL); and Thorsten Anger, Aachen (DE)
Assigned to LUMILEDS LLC, San Jose, CA (US)
Filed by LUMILEDS LLC, San Jose, CA (US)
Filed on Mar. 24, 2023, as Appl. No. 18/189,431.
Claims priority of provisional application 63/323,739, filed on Mar. 25, 2022.
Prior Publication US 2023/0304644 A1, Sep. 28, 2023
Int. Cl. F21V 3/00 (2015.01); B60R 11/00 (2006.01); B60R 11/02 (2006.01)
CPC F21V 3/00 (2013.01) [B60R 2011/004 (2013.01); B60R 11/0235 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A cluster of lighting devices comprising:
a plurality of lighting devices electrically coupled together, each lighting device comprising:
a mixing box;
a circuit board;
a light source embedded in the mixing box, the light source having a first surface affixed to a surface of the circuit board and a second surface opposite the first surface;
a transparent layer having a first surface adjacent to the second surface of the light source and a second surface opposite the first surface, wherein the transparent layer is formed from a first material that spreads light emitted by the light source laterally into the mixing box; and
a light diffusing layer having a first surface adjacent to the second surface of the transparent layer, wherein the light diffusing layer comprises a layer of the first material comprising particles of a white pigment that scatter the light emitted by the light source in three dimensions.