US 11,725,803 B2
Compact laser-based light generating device
Hugo Johan Cornelissen, Escharen (NL); Olexandr Valentynovych Vdovin, Maarheeze (NL); Robert Van Asselt, Valkenswaard (NL); Marcellus Jacobus Johannes Van Der Lubbe, Best (NL); Georges Marie Calon, Eindhoven (NL); Rifat Ata Mustafa Hikmet, Eindhoven (NL); and Ties Van Bommel, Horst (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 17/799,052
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Feb. 9, 2021, PCT No. PCT/EP2021/053003
§ 371(c)(1), (2) Date Aug. 11, 2022,
PCT Pub. No. WO2021/160573, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 20156556 (EP), filed on Feb. 11, 2020.
Prior Publication US 2023/0064361 A1, Mar. 2, 2023
Int. Cl. F21V 9/35 (2018.01); F21V 29/50 (2015.01); F21V 7/06 (2006.01); G02B 26/00 (2006.01)
CPC F21V 9/35 (2018.02) [F21V 7/06 (2013.01); F21V 29/50 (2015.01); G02B 26/008 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An arrangement comprising a device, wherein the device comprises a luminescent material comprising element and a light transmissive element, wherein:
the device has a first device axis;
the luminescent material comprising element comprises a luminescent material configured to emit luminescent material light upon irradiation with first light, wherein the luminescent material comprising element has a first length and a characteristic first dimension perpendicular to the first length, wherein D1/L1<1; wherein the luminescent material comprising element is configured at a non-zero first distance from the first device axis, and wherein the luminescent material comprising element at least partly surrounds the first device axis;
the light transmissive element is transmissive for the first light, wherein the light transmissive element comprises an element light entrance part and an element light escape part, wherein the element light escape part and the luminescent material are radiationally coupled; wherein one or more of the following applies: (i) the first device axis intersects the light transmissive element, and (ii) the light transmissive element at least partly surrounds the first device axis; and
the luminescent material comprising element is in thermal contact with one or more of (a) the light transmissive element and (b) an optional thermally conductive element,
wherein the light transmissive element comprises a dome-shaped body having a curved surface, wherein at least part of the curved surface comprises the element light entrance part, wherein the light transmissive element has a transmissive element axis, wherein the first device axis and the transmissive element axis coincide.