Light-emitting device and projection display apparatus

Patent metadata

Field	Value
Publication number	US-12044956-B2
Application number	US-201917268288-A
Country	US
Kind code	B2
Filing date	Jul 26, 2019
Priority date	Aug 15, 2018
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

A light-emitting device including: a package including a light-emitting element, a reflection member that reflects light outputted from the light-emitting element, and a sealed space that accommodates the light-emitting element and the reflection member; a base plate on which a plurality of the packages is mounted; and lenses opposed to the base plate with the plurality of packages interposed therebetween, the lenses being opposed to the respective packages.

First claim

The invention claimed is:

1. A light-emitting device comprising:
a package including an accommodation member in which a light-emitting element and a reflection member that reflects light outputted from the light-emitting element are disposed, and a cover having a transparent portion and a metallic bonding portion joined to a corresponding bonding portion of the accommodation member, forming a sealed space that accommodates the light-emitting element and the reflection member;
a base plate on which a plurality of the packages is mounted; and
lenses opposed to the base plate with the plurality of packages interposed therebetween, the lenses being opposed to the respective packages.

2. The light-emitting device according to claim 1 , wherein the lenses are included in a lens array.

3. The light-emitting device according to claim 2 , wherein a gap is provided between the base plate and the lens array.

4. The light-emitting device according to claim 2 , further comprising
a distance adjustment member that adjusts a distance between the package and the lens to a predetermined size.

5. The light-emitting device according to claim 4 , wherein the distance adjustment member has a shape of a frame, and the plurality of packages is disposed inside the frame.

6. The light-emitting device according to claim 4 , wherein the distance adjustment member includes a terminal that electrically couples the light-emitting element to an outside.

7. The light-emitting device according to claim 4 , wherein the distance adjustment member is integrated.

8. The light-emitting device according to claim 4 , wherein the distance adjustment member is integrated with the base plate.

9. The light-emitting device according to claim 1 , wherein the light-emitting element includes a semiconductor laser.

10. The light-emitting device according to claim 9 , wherein the semiconductor laser includes a gallium nitride (GaN)-based semiconductor.

11. The light-emitting device according to claim 1 , wherein
the package further includes a first accommodation member provided with a recess and a second accommodation member that seals the recess, and
the sealed space is formed by the first accommodation member and the second accommodation member.

12. The light-emitting device according to claim 11 , wherein
the first accommodation member and the second accommodation member are provided in this order from a side of the base plate, and
the package further includes a submount, the submount being provided between the light-emitting element and the first accommodation member.

13. The light-emitting device according to claim 12 , wherein the submount is conductive.

14. The light-emitting device according to claim 11 , wherein
the first accommodation member and the second accommodation member are provided in this order from a side of the base plate, and
an electrode extraction part is provided on a bonding surface of the first accommodation member with the base plate, the electrode extraction part being electrically coupled to an electrode of the light-emitting element.

15. The light-emitting device according to claim 11 , wherein
the first accommodation member and the second accommodation member are provided in this order from a side of the base plate, and
an electrode extraction part is provided on a top surface of the first accommodation member, the top surface being exposed from the second accommodation member, the electrode extraction part being electrically coupled to an electrode of the light-emitting element.

16. The light-emitting device according to claim 1 , comprising the light-emitting elements that output light beams having wavelengths different from each other.

17. The light-emitting device according to claim 1 , wherein the reflection member includes a mirror.

18. The light-emitting device according to claim 1 , further comprising
a heat conductive member between the package and the base plate, wherein
the packages that are adjacent to each other are coupled to each other through the heat conductive member.

19. A projection display apparatus comprising
a light-emitting device, the light-emitting device including:
a package including an accommodation member in which a light-emitting element, a reflection member that reflects light outputted from the light-emitting element are disposed, and a cover having a transparent portion and a metallic bonding portion joined to a corresponding bonding portion of the accommodation member, forming sealed space that accommodates the light-emitting element and the reflection member;
a base plate on which a plurality of the packages is mounted; and
lenses opposed to the base plate with the plurality of packages interposed therebetween, the lenses being opposed to the respective packages.

Assignees

• Sony Corp

Inventors

• Motobayashi Hisayoshi
• Kawanishi Hidekazu
• Takiguchi Yoshiro
• Murayama Masahiro
• Miyahara Hiroyuki
• Domon Hitoshi

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10H20/856

  Reflecting means · CPC title

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• H01S5/02218

  Material of the housings; Filling of the housings · CPC title

• H01S5/0239

  Combinations of electrical or optical elements · CPC title