US 12,215,849 B2
Illumination device, optical element and luminaire
Peter Johannes Martinus Bukkems, Deurne (NL); Barry Mos, Bocholt (BE); and Simon Jacobus Maria Kuppens, Geldrop (NL)
Assigned to SIGNIFY HOLDING, B.V., Eindhoven (NL)
Appl. No. 18/280,754
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Feb. 28, 2022, PCT No. PCT/EP2022/054992
§ 371(c)(1), (2) Date Sep. 7, 2023,
PCT Pub. No. WO2022/189187, PCT Pub. Date Sep. 15, 2022.
Claims priority of application No. 21162086 (EP), filed on Mar. 11, 2021.
Prior Publication US 2024/0167661 A1, May 23, 2024
Int. Cl. F21V 3/06 (2018.01); F21S 8/04 (2006.01); F21V 7/00 (2006.01); F21Y 105/10 (2016.01); F21Y 113/00 (2016.01); F21Y 115/10 (2016.01)
CPC F21V 3/06 (2018.02) [F21S 8/04 (2013.01); F21V 7/0083 (2013.01); F21Y 2105/10 (2016.08); F21Y 2113/00 (2013.01); F21Y 2115/10 (2016.08)] 15 Claims
OG exemplary drawing
 
1. An illumination device comprising a support structure having a first side with mounted thereon:
a plurality of spatially separated solid state lighting elements disposed in an array, and
an optical element made of a solid, light transmissive, light diffusing, foam material,
wherein the optical element is provided with a pattern of concaves, essentially each concave being formed by:
a recessed portion of the concaves comprising a closed bottom wall,
a circumferential side wall extending from the closed bottom wall to a light exit window, the light exit window bordering an apex of an elevated portion of the concaves and opposite to the closed bottom wall, and
wherein the plurality of spatially separated solid state elements is arranged outside and upstream of the concaves and conformal to said pattern of concaves.