US 12,113,332 B2
Light emitting device
Masatoshi Nakagaki, Komatsushima (JP); and Soichiro Miura, Tokushima (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Filed by NICHIA CORPORATION, Anan (JP)
Filed on Jul. 24, 2023, as Appl. No. 18/358,019.
Application 18/358,019 is a continuation of application No. 17/697,897, filed on Mar. 17, 2022, granted, now 11,784,461.
Application 17/697,897 is a continuation of application No. 16/774,516, filed on Jan. 28, 2020, granted, now 11,309,681, issued on Apr. 19, 2022.
Claims priority of application No. 2019-015143 (JP), filed on Jan. 31, 2019; and application No. 2019-166722 (JP), filed on Sep. 13, 2019.
Prior Publication US 2023/0369824 A1, Nov. 16, 2023
Int. Cl. H01S 5/02355 (2021.01); H01S 5/022 (2021.01); H01S 5/0233 (2021.01); H01S 5/0239 (2021.01); H01S 5/40 (2006.01); H01S 5/02345 (2021.01)
CPC H01S 5/0239 (2021.01) [H01S 5/022 (2013.01); H01S 5/0233 (2021.01); H01S 5/02355 (2021.01); H01S 5/40 (2013.01); H01S 5/4031 (2013.01); H01S 5/02345 (2021.01)] 8 Claims
OG exemplary drawing
 
1. A light emitting device comprising:
a first semiconductor laser element configured to emit light in a prescribed direction;
a second semiconductor laser element configured to emit light in the prescribed direction;
a first light-reflective member spaced apart from the first semiconductor laser element in the prescribed direction, the first light-reflective member having a first lower surface and a first light-reflective surface inclined relative to the first lower surface, the first light-reflective surface being configured to reflect the light emitted from the first light-reflective member;
a second light-reflective member spaced apart from the second semiconductor laser element in the prescribed direction, the second light-reflective member having a second lower surface and a second light-reflective surface inclined relative to the second lower surface, the second light-reflective surface being configured to reflect the light emitted from the second light-reflective member; and
a basal part having a bottom surface over which the first semiconductor laser element, the second semiconductor laser element, the first light-reflective member and the second light-reflective member are disposed,
wherein
the first lower surface of the first light-reflective member faces the bottom surface of the basal part,
the second lower surface of the second light-reflective member faces the bottom surface of the basal part,
the light emitted from the first semiconductor laser element and traveling along an optical axis irradiates the first light-reflective surface at a first position,
the light emitted from the second semiconductor laser element and traveling along an optical axis irradiates the second light-reflective surface at a second position,
a height from the first lower surface of the first light-reflective member to the first position on the first light-reflective surface is different from a height from the second lower surface of the second light-reflective member to the second position on the second light-reflective surface as measured along a direction perpendicular to the bottom surface of the basal part, and
with respect to the prescribed direction, a difference between the first position and the second position is smaller than a difference between a mounting position of the first light-reflective member and a mounting position of the second light-reflective member.