Title:
LIGHT-EMITTING DEVICE AND DISTANCE-MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/037617
Kind Code:
A1
Abstract:
The light-emitting device according to the present technology comprises: a light-emitting unit for emitting light for distance measurement; a light-receiving unit for receiving the light emitted by the light-emitting unit; and a control unit for calculating a target value for a drive current of the light-emitting unit on the basis of a reception signal produced by the light-receiving unit, and, when the light-emitting unit is caused to emit light so as to achieve a basic light irradiation amount different from that in a calculation light-emission period in which the light-emitting unit is caused to emit light for the purpose of calculating the target value, causing the light-emitting unit to emit light by using a drive current produced according to a corrected target value, in which the target value is corrected on the basis of the difference between the basic light irradiation amount and that in the calculation light-emission period.
Inventors:
MASUMITSU NAOKI (JP)
DAIO KATSUHISA (JP)
DAIO KATSUHISA (JP)
Application Number:
PCT/JP2022/011731
Publication Date:
March 16, 2023
Filing Date:
March 15, 2022
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
G01S7/484; G01S7/497; G01S17/894
Foreign References:
| JP2021048162A | 2021-03-25 | |||
| JP2013205331A | 2013-10-07 | |||
| US20190310375A1 | 2019-10-10 |
Attorney, Agent or Firm:
IWATA, Masanobu et al. (JP)
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