US 11,808,956 B2
Diffuser combining a multi-faceted surface and a lens-covered surface to provide specific light distributions
Mark A. Raymond, Littleton, CO (US); Hector Andres Porras Soto, Littleton, CO (US); and Howard Lange, San Diego, CA (US)
Assigned to LUMENCO, LLC
Filed by Lumenco, LLC, Englewood, CO (US)
Filed on Feb. 25, 2021, as Appl. No. 17/185,680.
Application 17/144,504 is a division of application No. 16/894,489, filed on Jun. 5, 2020, granted, now 10,914,875, issued on Feb. 9, 2021.
Application 17/185,680 is a continuation in part of application No. 17/144,504, filed on Jan. 8, 2021.
Claims priority of provisional application 62/880,776, filed on Jul. 31, 2019.
Prior Publication US 2021/0181387 A1, Jun. 17, 2021
Int. Cl. G02B 5/02 (2006.01); F21V 8/00 (2006.01); G02B 27/00 (2006.01)
CPC G02B 5/0221 (2013.01) [G02B 5/0231 (2013.01); G02B 5/0242 (2013.01); G02B 5/0263 (2013.01); G02B 5/0278 (2013.01); G02B 5/0284 (2013.01); G02B 6/0051 (2013.01); G02B 27/0012 (2013.01)] 33 Claims
OG exemplary drawing
 
1. An apparatus for producing a predefined light distribution in space, comprising:
a light source operable to output light; and
a diffuser with a substrate having a back surface receiving the light output from the light source and a front surface, opposite the back surface, redirecting and transmitting the light received on the back surface to output diffuse light with the predefined light distribution from the diffuser,
wherein the substrate is formed of a light-transmissive material,
wherein the back surface comprises a plurality of lenses focusing the light received on the back surface onto the front surface,
wherein the front surface comprises a plurality of facets providing the diffusing of the light, and
wherein each of the plurality of facets is randomly assigned to one of a plurality of sets; and
wherein each of the plurality of sets is associated with a region of the predefined light distribution.