Title:
HEADLIGHT DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/095156
Kind Code:
A1
Abstract:
This headlight device (100) has: a light source unit (1) for radiating first light; a first optical unit (2) for changing the light-distribution pattern of the first light incident thereon; a light-receiving unit (4) for detecting second light incident thereon; a second optical unit (3) for projecting the light-distribution pattern in a predetermined projection direction and on which incident light traveling in the opposite direction to the projection direction is incident; a third optical unit (5) for emitting the first light toward the second optical unit (3) and emitting incident light that has passed through the second optical unit (3) as the second light traveling toward the light-receiving unit (4); and a fourth optical unit (6) for condensing the second light emitted from the third optical unit (5) and directing the same toward the light-receiving unit (4). A portion of the optical axis of the projection optical system (110), which includes the light source unit (1), the first optical unit (2), and the second optical unit (3), is aligned with a portion of the optical axis of the imaging optical system (120), which includes the second optical unit (3), the fourth optical unit (6), and the light-receiving unit (4), and the light-distribution pattern is controlled on the basis of a detection result of the second light at the light-receiving unit (4).
Inventors:
SUWA MASASHIGE (JP)
OSHIMA RITSUYA (JP)
KUWATA MUNEHARU (JP)
OSHIMA RITSUYA (JP)
KUWATA MUNEHARU (JP)
Application Number:
PCT/JP2019/044499
Publication Date:
May 20, 2021
Filing Date:
November 13, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F21S41/663; B60Q1/14; F21Y115/10
Domestic Patent References:
| WO1998054030A1 | 1998-12-03 | |||
| WO2013015213A1 | 2013-01-31 |
Foreign References:
| JP2018156862A | 2018-10-04 | |||
| JP2016039020A | 2016-03-22 |
Attorney, Agent or Firm:
YAMAGATA Yoichi et al. (JP)
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