Semiconductor laser light source device, semiconductor laser light source system, and image display apparatus

Patent metadata

Field	Value
Publication number	US-9899795-B2
Application number	US-201515527219-A
Country	US
Kind code	B2
Filing date	Nov 27, 2015
Priority date	Feb 16, 2015
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

The object is to provide a technique that allows a semiconductor laser to be efficiently cooled. A semiconductor laser light source device includes: a semiconductor laser; a cooler that cools the semiconductor laser; and a driving substrate that drives the semiconductor laser. The cooler is placed in contact with a surface of the semiconductor laser that is opposite to a light emitting surface of the semiconductor laser. Furthermore, the driving substrate is placed in contact with a surface of the cooler that is opposite to a surface of the cooler on which the semiconductor laser is placed.

First claim

The invention claimed is:

1. A semiconductor laser light source device, comprising:
a semiconductor laser;
a cooler that cools said semiconductor laser; and
a driving substrate that drives said semiconductor laser,
wherein said cooler is placed in contact with a surface of said semiconductor laser, said surface being opposite to a light emitting surface of said semiconductor laser,
said driving substrate is placed in contact with a surface of said cooler, said surface being opposite to a surface of said cooler on which said semiconductor laser is placed, and
said cooler includes a hollow in which a plurality of fins are arranged.

2. The semiconductor laser light source device according to claim 1 ,
wherein said semiconductor laser is a semiconductor element including a heat dissipation block on which a plurality of chips are arranged, and
said cooler is placed directly below said heat dissipation block to be in contact with said semiconductor element.

3. A semiconductor laser light source device, comprising:
a semiconductor laser;
a cooler that cools said semiconductor laser; and
a driving substrate that drives said semiconductor laser,
wherein each of said cooler and said driving substrate is placed in contact with a surface of said semiconductor laser, said surface being opposite to a light emitting surface of said semiconductor laser,
said cooler is formed in a protruding shape so that a center of said cooler in a width direction is higher than ends of said cooler, or is formed in a depressed shape so that said center of said cooler in said width direction is lower than said ends of said cooler, and
a plurality of fins are arranged on a lower surface of said cooler.

4. A semiconductor laser light source system, comprising
a plurality of said semiconductor laser light source devices according to claim 1 .

5. A semiconductor laser light source system, comprising
a plurality of said semiconductor laser light source devices according to claim 3 .

6. An image display apparatus, comprising
said semiconductor laser light source device according to claim 1 .

7. An image display apparatus, comprising
said semiconductor laser light source device according to claim 3 .

8. An image display apparatus, comprising
said semiconductor laser light source system according to claim 4 .

9. An image display apparatus, comprising
said semiconductor laser light source system according to claim 5 .

Assignees

• Mitsubishi Electric Corp

Inventors

• Murai Hideyuki
• Hirose Tatsuro

Classifications

• H01S5/02407

  Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling · CPC title

• H01S5/0261

  Non-optical elements, e.g. laser driver components, heaters (H01S5/0265 takes precedence) · CPC title

• H01S5/005

  Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping (H01S5/026, H01S5/18388 take precedence) · CPC title

• H01S5/02423 Primary

  Liquid cooling, e.g. a liquid cools a mount of the laser · CPC title

• H01S5/022

  Mountings; Housings · CPC title