Title:
VEHICLE LAMP
Document Type and Number:
WIPO Patent Application WO/2022/131302
Kind Code:
A1
Abstract:
In the present invention, a scanning-type light source (200A) includes a semiconductor light source (212), and scans a beam (BM) from the semiconductor light source (212) in the horizontal direction of the light distribution. An illumination circuit (300I) is synchronized with the scanning of the scanning-type light source (200A), and can modulate the amount of light of the semiconductor light source (212) at individual scanning positions in multiple gradations using pulse modulation. The pulse-modulation period TPWM is such that TPWM
Inventors:
KIKUCHI SATOSHI (JP)
SHIBATA YOSHINORI (JP)
SHIBATA YOSHINORI (JP)
Application Number:
PCT/JP2021/046327
Publication Date:
June 23, 2022
Filing Date:
December 15, 2021
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
B60Q1/04; B60Q1/14; F21S41/151; F21S41/16; F21S41/663; F21S41/675; F21W102/145; F21Y115/10; F21Y115/30
Foreign References:
| JP2017213952A | 2017-12-07 | |||
| JP2020119778A | 2020-08-06 | |||
| JP2019059265A | 2019-04-18 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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