Title:
LIGHT SOURCE DEVICE, RANGING DEVICE, AND RANGING METHOD
Document Type and Number:
WIPO Patent Application WO/2024/048325
Kind Code:
A1
Abstract:
[Problem] To enable a smaller form factor and variable peak power. [Solution] This light source device comprises: a laminated semiconductor layer having an active layer that emits light of a first wavelength, which is a wavelength that changes according to drive conditions, and a first reflective layer for the first wavelength; a second reflective layer for a second wavelength disposed on a first surface facing a light emission surface of the laminated semiconductor layer; a third reflective layer for the first wavelength disposed on a second surface disposed further to the rear side of the optical axis relative to the first surface; a laser medium disposed between the second reflective layer and the third reflective layer; a fourth reflective layer for the second wavelength disposed on the second surface or disposed further to the rear side of the optical axis relative to the second surface; and a first resonator that causes the light of the first wavelength to resonate between the first reflective layer and the third reflective layer. The optical axis of the laminated semiconductor layer and the optical axis of the laser medium are coaxial.
Inventors:
TANAKA KENJI (JP)
YONEZAWA GEN (JP)
YONEZAWA GEN (JP)
Application Number:
PCT/JP2023/029829
Publication Date:
March 07, 2024
Filing Date:
August 18, 2023
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
H01S3/0941; G01C3/06; G01S7/484; H01S3/00; H01S3/113; H01S5/042; H01S5/14
Domestic Patent References:
| WO2021106757A1 | 2021-06-03 |
Foreign References:
| JP2010085316A | 2010-04-15 | |||
| CN102244356A | 2011-11-16 |
Attorney, Agent or Firm:
MIYAJIMA Manabu (JP)
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