Laser light source and laser projection device

Patent metadata

Field	Value
Publication number	US-11592145-B2
Application number	US-201916569628-A
Country	US
Kind code	B2
Filing date	Sep 12, 2019
Priority date	Jan 10, 2019
Publication date	Feb 28, 2023
Grant date	Feb 28, 2023

Abstract

Embodiments of the present application provide a laser light source and a laser projection device. The laser light source includes a laser assembly, where the laser assembly includes a laser and a circuit board, the laser includes a substrate and a light emitting chip arranged on the substrate, a lateral surface of the substrate is provided with a plurality of pins extending outwards therefrom, the circuit board is arranged on a side where the pins extend, and the circuit board is electrically connected to the pins. The laser light source of the present application features simple assembling and disassembling, reliable performance and relatively low cost.

First claim

What is claimed is:

1. A laser light source, comprising a laser assembly and a housing on which the laser assembly is arranged, wherein the laser assembly comprises a laser and a circuit board, the laser comprises a substrate and a light emitting chip arranged on the substrate, a lateral surface of the substrate is provided with a plurality of pins extending outwards therefrom, the circuit board is arranged on a side where the pins extend, and the circuit board is electrically connected to the pins;
wherein the housing has a laser mounting port, in which the laser is arranged, and the laser further comprises a base which fixes and supports one surface of the substrate, another surface of the substrate is provided with the light emitting chip, and serves as a light emitting surface of the laser, and the laser is securely connected to the housing through the base; and
wherein the laser light source further comprises a sealing element, wherein the sealing element comprises a top part and a side part, the top part covers an edge of the light emitting surface of the laser, the side part wraps around a periphery of the base, and the side part is interference-fitted with the laser mounting port.

2. The laser light source according to claim 1 , wherein the circuit board has a first surface and a second surface, which are oppositely arranged, and the pins are soldered on the first surface of the circuit board.

3. The laser light source according to claim 1 , wherein the light emitting surface of the laser is parallel to the substrate, and the circuit board is parallel to the substrate.

4. The laser light source according to claim 1 , wherein the circuit board is provided with a receiving region for receiving the laser, and the laser is arranged in the receiving region.

5. The laser light source according to claim 4 , wherein the receiving region is a through hole or an open slot formed in the circuit board.

6. The laser light source according to claim 1 , wherein the plurality of the pins are respectively arranged on opposite sides of the substrate.

7. The laser light source according to claim 1 , wherein the housing comprises a first bearing part and a second bearing part, the first bearing part being configured to bear the circuit board, and the second bearing part being configured to bear the laser.

8. The laser light source according to claim 1 , wherein at least one of the laser and the circuit board is connected to the housing by a fastener.

9. A laser projection device, comprising a laser light source, the laser light source comprising:
a laser assembly, wherein the laser assembly comprises a laser and a circuit board, the laser comprises:
a light emitting chip;
a substrate on which the light emitting chip is arranged, wherein a lateral surface of the substrate is provided with a plurality of pins extending outwards therefrom, the circuit board is arranged on a side where the pins extend, and the circuit board is electrically connected to the pins; and
a base fixing and supporting one surface of the substrate, wherein the light emitting chip is provided on another surface of the substrate, and the another surface of the substrate serves as a light emitting surface of the laser;

a housing on which the laser assembly is arranged, wherein the housing has a laser mounting port in which the laser is arranged, and the laser is securely connected to the housing through the base; and
a sealing element, wherein the sealing element comprises a top part and a side part, the top part covers an edge of the light emitting surface of the laser, the side part wraps around a periphery of the base, and the side part is interference-fitted with the laser mounting port.

10. The laser projection device according to claim 9 , wherein the circuit board has a first surface and a second surface, which are oppositely arranged, and the pins are soldered on the first surface of the circuit board.

11. The laser projection device according to claim 9 , there are at least two circuit boards, whose positions correspond to the pins.

12. The laser projection device according to claim 9 , there is one circuit board, on which a receiving region is provided for receiving the laser, and the laser is arranged in the receiving region.

13. The laser projection device according to claim 12 , wherein the receiving region is a through hole or an open slot formed in the circuit board.

14. The laser projection device according to claim 9 , wherein the plurality of the pins are respectively arranged on opposite sides of the substrate.

15. The laser projection device according to claim 9 , wherein the housing comprises a first bearing part and a second bearing part, the first bearing part being configured to bear the circuit board, and the second bearing part being configured to bear the laser.

16. The laser projection device according to claim 9 , wherein at least one of the laser and the circuit board is connected to the housing by a fastener.

Assignees

• Hisense Laser Display Co Ltd

Inventors

• Tian Xintuan
• Yang Changming
• Zhao Yun
• Cui Lei
• Xing Zhe

Classifications

• G03B21/2033 Primary

  LED or laser light sources · CPC title

• F21Y2115/30

  Semiconductor lasers · CPC title

• H01S5/02216

  Butterfly-type, i.e. with electrode pins extending horizontally from the housings · CPC title

• G03B21/2013

  Plural light sources · CPC title

• F21K9/90

  Methods of manufacture · CPC title