Vehicle lighting device

Patent metadata

Field	Value
Publication number	US-2017138555-A1
Application number	US-201615349497-A
Country	US
Kind code	A1
Filing date	Nov 11, 2016
Priority date	Nov 18, 2015
Publication date	May 18, 2017
Grant date	—

Abstract

A vehicle lighting device includes a projector lens, a lens holder, a main body barrel, a bottom cover, a first to a fourth excitation light sources, an upper and a lower light deflector, a correction mirror, and a fluorescent unit. The first and the second excitation light source emit laser beams toward the rotational center of a light-deflecting mirror of the upper light deflector, and the third and the fourth excitation light source emit laser beams toward that of the lower light deflector. The correction mirror corrects the distortion of the laser beams scanned by the upper and lower light deflectors and reflects the corrected laser beams. A two-dimensional image corresponding to a predetermined light distribution pattern is drawn as a white image on the fluorescent unit by the corrected light beams, and the two-dimensional image is projected on a virtual vertical screen through the projector lens.

First claim

What is claimed is:

1 . A vehicle lighting device configured to form a predetermined light distribution pattern, comprising:
a plurality of light sources that emit light beams; a light-deflecting mirror which is disposed such that a plurality of light beams emitted from the plurality of light sources are incident at a same predetermined position and which reflects the plurality of light beams; a light deflector which scans the plurality of light beams by changing reflection directions of the plurality of light beams reflected by the light-deflecting mirror; and an optical system which forms the predetermined light distribution pattern by the plurality of light beams scanned by the light deflector.

2 . The vehicle lighting device according to claim 1 , wherein
the plurality of light beams reflected by the light-deflecting mirror are separated and irradiated at different positions.

3 . The vehicle lighting device according to claim 1 , wherein
scanning ranges of the plurality of light beams are at least partly overlapped.

4 . The vehicle lighting device according to claim 1 , comprising:
a correction mirror which is provided between the light deflector and the optical system, and which corrects distortion of the plurality of light beams scanned by the light deflector, and reflects the corrected light beams.

5 . The vehicle lighting device according to claim 1 , comprising:
a reflection mirror which is provided between the plurality of light sources and the light deflector, and which reflects the plurality of light beams, which have been emitted from the plurality of light sources, toward the predetermined position of the light-deflecting mirror.

6 . The vehicle lighting device according to claim 1 , comprising:
a projection unit on which an image is drawn by the plurality of light beams scanned by the light deflector, wherein the optical system projects the image drawn on the projection unit thereby to form the predetermined light distribution pattern.

Assignees

• Stanley Electric Co Ltd

Inventors

• Hirasawa Hiroshi
• Yatsuda Yasushi

Classifications

• F21S41/33

  Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature · CPC title

• F21S41/176

  Light sources where the light is generated by photoluminescent material spaced from a primary light generating element · CPC title

• F21S41/25

  Projection lenses · CPC title

• F21S41/675

  by moving reflectors · CPC title

• F21Y2115/30

  Semiconductor lasers · CPC title