IP Library › Granted Patent US 12,504,149
Granted Patent B2
US 12,504,149 · App. 18/989,391 · Granted Dec 23, 2025

Light-emitting device

Inventors: Yoshiki Endo (Tokushima, JP); Kazuya Tamura (Anan, JP)
Assignee: NICHIA CORPORATION
F21V5/048F21V5/046F21V31/005
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Quick Facts
Patent No.
US 12,504,149
App. No.
18/989,391
Granted
Dec 23, 2025
Kind
B2
Abstract

A light-emitting device includes: a base member having an outer lateral surface, an upper surface meeting the outer lateral surface, and a recess on an upper surface side; a light-emitting element disposed in the recess; a lens disposed on the upper surface of the base member and including a lens portion and a flange portion; and a reflective member disposed in contact with the upper surface of the base member and a lateral surface of the flange portion.

Claims (24)

1 . A light-emitting device comprising:

a base member having an outer lateral surface, an upper surface meeting the outer lateral surface, and a recess on an upper surface side;

a light-emitting element disposed in the recess;

a lens disposed on the upper surface of the base member and including a lens portion and a flange portion;

a reflective member disposed in contact with the upper surface of the base member and a lateral surface of the flange portion; and

a light transmissive member disposed between the lens and the light-emitting element,

wherein the reflective member is disposed in contact with each of the lateral surface of the flange portion of the lens and a lateral surface of the light transmissive member.

2 . The light-emitting device according to claim 1 , wherein the reflective member surrounds the flange portion in a top view.

3 . The light-emitting device according to claim 1 , wherein the lens is smaller than the base member in a top view.

4 . A light-emitting device comprising:

a base member having an outer lateral surface, an upper surface meeting the outer lateral surface, and a recess on an upper surface side;

a light-emitting element disposed in the recess;

a lens disposed on the upper surface of the base member and including a lens portion and a flange portion; and

a reflective member disposed in contact with the upper surface of the base member and a lateral surface of the flange portion,

wherein the flange portion has a rectangular shape including a curved surface at a corner portion in a top view.

5 . The light-emitting device according to claim 4 , further comprising:

a bonding member configured to bond the lens to the upper surface of the base member, wherein

the reflective member contacts the bonding member.

6 . The light-emitting device according to claim 4 , wherein a width of the reflective member on a diagonal of the base member is greater than a width of the reflective member on a perpendicular bisector of a side of the base member in the top view.

7 . The light-emitting device according to claim 4 , further comprising:

a bonding member configured to bond the lens to the upper surface of the base member, wherein

the recess has a rectangular shape including a curved surface at a corner portion in the top view, and

a width of an overlapping portion between the lens and the upper surface of the base member in the top view is smaller at the corner portion than at a portion other than the corner portion.

8 . The light-emitting device according to claim 1 , wherein a shape of an outer edge of the reflective member is an irregular curved shape in a top view.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 20, 2024
From: ENDO, YOSHIKI; TAMURA, KAZUYA
To: NICHIA CORPORATION
Reel/Frame 069650/0418 →
Priority Claims (1)
JP 2023-219104 · Dec 26, 2023 · national
Continuity (1)
Related Publication 20250207756A1 · Jun 26, 2025
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