US 12,424,817 B2
Light-emitting device
Kazuya Eto, Anan (JP); Soichiro Miura, Tokushima (JP); Takuya Hashimoto, Tokushima (JP); and Masatoshi Nakagaki, Komatsushima (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Filed by NICHIA CORPORATION, Anan (JP)
Filed on Apr. 22, 2022, as Appl. No. 17/727,594.
Claims priority of application No. 2021-073426 (JP), filed on Apr. 23, 2021; application No. 2021-205249 (JP), filed on Dec. 17, 2021; and application No. 2022-042111 (JP), filed on Mar. 17, 2022.
Prior Publication US 2022/0344896 A1, Oct. 27, 2022
Int. Cl. H01S 5/00 (2006.01); H01S 5/02216 (2021.01); H01S 5/02315 (2021.01); H01S 5/02345 (2021.01); H01S 5/024 (2006.01); H01S 5/0683 (2006.01); H01S 5/40 (2006.01); H10F 55/155 (2025.01); H01S 5/02255 (2021.01); H01S 5/02326 (2021.01); H10F 77/40 (2025.01)
CPC H01S 5/02315 (2021.01) [H01S 5/02216 (2013.01); H01S 5/02345 (2021.01); H01S 5/02469 (2013.01); H01S 5/0683 (2013.01); H01S 5/4093 (2013.01); H10F 55/155 (2025.01); H01S 5/02255 (2021.01); H01S 5/02326 (2021.01); H10F 77/413 (2025.01)] 18 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a first light-emitting element having a first emission end surface including one or more first light-emitting points each configured to emit a first light;
a second light-emitting element having a second emission end surface including one or more second light-emitting points each configured to emit a second light;
a plurality of upper submounts; and
a lower submount,
wherein
the plurality of upper submounts include
a first submount including a first upper surface on which the first light-emitting element is disposed, and a first lateral surface extending from the first upper surface and located on a same side as the first emission end surface of the first light-emitting element, and
a second submount including a second upper surface on which the second light-emitting element is disposed, and a second lateral surface extending from the second upper surface and located on a same side as the second emission end surface of the second light-emitting element,
the lower submount including an upper surface on which the first submount and the second submount are disposed, and a front lateral surface extending from the upper surface and located on a same side as the first lateral surface of the first submount and the second lateral surface of the second submount,
in a top plan view of the upper surface of the lower submount, with a propagating direction of the first light along an optical axis being forward,
the first lateral surface of the first submount is located more forward than the second lateral surface of the second submount,
the first emission end surface of the first light-emitting element is located more forward than the second emission end surface of the second light-emitting element, and
at least a portion of the first lateral surface of the first submount is protruded more forward than an edge along which the upper surface and the front lateral surface of the lower submount meet.