US 12,442,510 B2
Phosphor-converted light emitting diodes (LEDs) color tuning
Gregoire Denis, Sunnyvale, CA (US); and Rohit Modi, Hayward, CA (US)
Assigned to LUMILEDS SINGAPORE PTE. LTD., Singapore (SG)
Appl. No. 18/833,693
Filed by Lumileds LLC, San Jose, CA (US)
PCT Filed Jan. 16, 2023, PCT No. PCT/US2023/010852
§ 371(c)(1), (2) Date Jul. 26, 2024,
PCT Pub. No. WO2023/146765, PCT Pub. Date Aug. 3, 2023.
Claims priority of provisional application 63/304,025, filed on Jan. 28, 2022.
Prior Publication US 2025/0243990 A1, Jul. 31, 2025
Int. Cl. F21V 9/38 (2018.01)
CPC F21V 9/38 (2018.02) 18 Claims
OG exemplary drawing
 
1. A light source comprising:
a plurality of light emitting diodes (LEDs);
a plurality of sections of a primary down converter material corresponding to a first plurality of the LEDs; and
one or more sections of a laser-modified down converter material corresponding to a second plurality of the LEDs;
a light blocking layer positioned between all of the LEDs; and
a tuned color point distribution of the light source as a whole,
wherein the plurality of sections of a primary down converter material and the one or more sections of the laser-modified down converter material are segmented layers on respective LEDs that are off-set from center on the respective LED.