US 12,215,857 B2
Light emitting device
Tadayuki Kitajima, Itano-gun (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Appl. No. 18/258,880
Filed by NICHIA CORPORATION, Anan (JP)
PCT Filed Dec. 22, 2021, PCT No. PCT/JP2021/047608
§ 371(c)(1), (2) Date Jun. 22, 2023,
PCT Pub. No. WO2022/138733, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 2020-215688 (JP), filed on Dec. 24, 2020.
Prior Publication US 2024/0044475 A1, Feb. 8, 2024
Int. Cl. F21V 7/04 (2006.01); F21V 9/30 (2018.01); F21Y 113/00 (2016.01)
CPC F21V 7/04 (2013.01) [F21V 9/30 (2018.02); F21Y 2113/00 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A light emitting device comprising:
a base member having a mounting surface;
a first light-emitting element disposed on the mounting surface and configured to emit light passing along a first optical axis;
a second light-emitting element disposed on the mounting surface and configured to emit light passing along a second optical axis;
a third light-emitting element disposed on the mounting surface and configured to emit light passing along a third optical axis; and
one or more light reflective members having a first light reflective surface, a second light reflective surface, and a third light reflective surface, the first light reflective surface including a first position to be irradiated with the light passing along the first optical axis and being inclined relative to the mounting surface, the second light reflective surface including a second position to be irradiated with the light passing along the second optical axis and being inclined relative to the mounting surface, the third light reflective surface including a third position to be irradiated with the light passing along the third optical axis and being inclined relative to the mounting surface, wherein:
in a top view, when the mounting surface is divided into a first region and a second region by a virtual first straight line passing through the second position and the third position as a boundary, the first light-emitting element is disposed in the first region, and the second light-emitting element and the third light-emitting element are disposed in the second region,
in the top view, the second light reflective surface and the third light reflective surface sandwich the first light reflective surface,
in the top view, the light passing along the first optical axis coincides with a normal line to the first light reflective surface at the first position,
in the top view, the light passing along the second optical axis and a normal line to the second light reflective surface at the second position form an acute angle, and
in the top view, the light passing along the third optical axis and a normal line to the third light reflective surface at the third position form an acute angle.