US 12,225,643 B2
Lighting fixture and methods
Bernd P. Keller, Santa Barbara, CA (US); Michael Leung, Ventura, CA (US); Benjamin A. Jacobson, Santa Barbara, CA (US); Eric Tarsa, Goleta, CA (US); James Ibbetson, Goleta, CA (US); Claudio Girotto, Santa Barbara, CA (US); and Amruteshwar Hiremath, Cary, NC (US)
Assigned to Cree Lighting USA LLC, Racine, WI (US)
Filed by Cree Lighting USA LLC, Racine, WI (US)
Filed on Aug. 14, 2023, as Appl. No. 18/449,228.
Application 18/449,228 is a continuation in part of application No. 17/499,405, filed on Oct. 12, 2021, granted, now 11,729,877.
Application 17/499,405 is a continuation in part of application No. 17/120,802, filed on Dec. 14, 2020, granted, now 11,638,339, issued on Apr. 25, 2023.
Application 17/499,405 is a continuation in part of application No. 17/113,768, filed on Dec. 7, 2020, granted, now 11,156,760, issued on Oct. 26, 2021.
Application 17/499,405 is a continuation in part of application No. 16/990,230, filed on Aug. 11, 2020, granted, now 11,209,138, issued on Dec. 28, 2021.
Application 17/120,802 is a continuation of application No. 16/667,239, filed on Oct. 29, 2019, granted, now 10,900,621, issued on Jan. 26, 2021.
Application 16/990,230 is a continuation of application No. 16/657,254, filed on Oct. 18, 2019, granted, now 10,781,984, issued on Sep. 22, 2020.
Application 16/657,254 is a continuation of application No. 15/972,176, filed on May 6, 2018, granted, now 10,465,869, issued on Nov. 5, 2019.
Application 17/113,768 is a continuation of application No. 15/972,199, filed on May 6, 2018, granted, now 10,859,753, issued on Dec. 8, 2020.
Application 16/667,239 is a continuation of application No. 15/419,538, filed on Jan. 30, 2017, granted, now 10,502,374, issued on Dec. 10, 2019.
Application 15/972,176 is a continuation in part of application No. 15/419,538, filed on Jan. 30, 2017, granted, now 10,502,374, issued on Dec. 10, 2019.
Claims priority of provisional application 62/628,131, filed on Feb. 8, 2018.
Prior Publication US 2024/0074013 A1, Feb. 29, 2024
Int. Cl. H05B 45/20 (2020.01); A61N 5/06 (2006.01); F21K 9/61 (2016.01); F21S 8/00 (2006.01); F21S 8/02 (2006.01); F21S 19/00 (2006.01); F21V 7/04 (2006.01); F21V 8/00 (2006.01); F21V 14/02 (2006.01); F21V 33/00 (2006.01); F21Y 113/13 (2016.01); F21Y 113/17 (2016.01); F21Y 115/10 (2016.01)
CPC H05B 45/20 (2020.01) [F21K 9/61 (2016.08); F21S 8/006 (2013.01); F21S 8/026 (2013.01); F21V 7/04 (2013.01); F21V 33/006 (2013.01); A61N 2005/0663 (2013.01); F21S 19/005 (2013.01); F21V 14/02 (2013.01); F21Y 2113/13 (2016.08); F21Y 2113/17 (2016.08); F21Y 2115/10 (2016.08); G02B 6/0035 (2013.01); G02B 6/0051 (2013.01); G02B 6/0058 (2013.01); Y02B 20/40 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A light fixture comprising:
a sky-resembling light assembly comprising a first light exit surface and at least one first light engine that comprises a first multi-LED array including bluish LEDs, greenish LEDs, and white LEDs, wherein LEDs of the first multi-LED array are arranged in multiple separately-controllable strings of connected LEDs;
a sun-resembling light assembly comprising a plurality of second light engines that each comprises a second multi-LED array;
wherein, upon supplying electricity to the light fixture:
light having x, y color coordinates defining a first color point on a 1931 CIE Chromaticity Diagram exits the at least one first light engine through the first light exit surface, and
light having a second x, y color coordinates defining a second color point on a 1931 CIE Chromaticity Diagram point exits at least one second light engine of the plurality of second light engines, the second color point being more yellow-ish white than the first color point;
wherein the first light engine and the plurality of second light engines are positioned and oriented such that at least some light that exits the first light exit surface travels to a region to which at least some light that exits the plurality of second light engines travels; and
wherein the light fixture is configured to be mounted within or against a building surface, and is configured to produce emissions providing an appearance of a skylight or window without transmission of exterior light through any portion of the light fixture.