Vehicle lighting fixture

Patent metadata

Field	Value
Publication number	US-2016109074-A1
Application number	US-201514919128-A
Country	US
Kind code	A1
Filing date	Oct 21, 2015
Priority date	Oct 21, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

A vehicle lighting fixture can utilize a plurality of optical deflectors configured to two-dimensionally scan with excitation light. The vehicle lighting fixture can form a predetermined light distribution pattern and have at least one first lighting unit and at least one second lighting unit. The first lighting unit can include: excitation light sources; optical deflectors corresponding to the excitation light sources, each including a mirror part that can two-dimensionally scan with excitation light in horizontal and vertical directions; a first wavelength conversion member configured to include scanning regions corresponding to the optical deflectors, forming a light intensity distribution image; and a first optical system configured to project the light intensity distribution images formed in the respective scanning regions to form a first light distribution pattern. At least one scanning region can overlap another scanning region in part to relatively increase a light intensity in the overlapped scanning region.

First claim

What is claimed is:

1 . A vehicle lighting fixture configured to form a predetermined light distribution pattern, comprising:
at least one first lighting unit and at least one second lighting unit, wherein the first lighting unit includes
a plurality of excitation light sources;
a plurality of optical deflectors provided to correspond to the plurality of excitation light sources, the optical deflector configured to include a mirror part that can two-dimensionally scan with excitation light from a corresponding one of the excitation light sources in a horizontal direction and a vertical direction;
a first wavelength conversion member configured to include a plurality of scanning regions provided to correspond to the plurality of optical deflectors such that the plurality of scanning regions can be two-dimensionally scanned by the excitation light in the horizontal direction and the vertical direction to draw a two-dimensional image in a corresponding one among the plurality of scanning regions, thereby forming a light intensity distribution image in each of the plurality of scanning regions; and
a first optical system configured to project the light intensity distribution images formed in the respective scanning regions to form a first light distribution pattern, at least one scanning region among the plurality of scanning regions configured to overlap another scanning region in part to relatively increase a light intensity of the light intensity distribution formed in the overlapped scanning region,
the second lighting unit includes
a single excitation light source;
a single optical deflector provided to correspond to the single excitation light source, the single optical deflector configured to include a mirror part that can two-dimensionally scan with excitation light from the single excitation light source in a horizontal direction and a vertical direction;
a second wavelength conversion member configured to include a single scanning region provided to correspond to the single optical deflector such that the single scanning region can be two-dimensionally scanned by the excitation light in the horizontal direction and the vertical direction to draw a two-dimensional image in the single scanning region, thereby forming a light intensity distribution image in the single scanning region; and
a second optical system configured to project the light intensity distribution image to form a second light distribution pattern, and
the predetermined light distribution pattern is formed by overlaying the first light distribution pattern and the second light distribution pattern on each other.

2 . The vehicle lighting fixture according to claim 1 , wherein at least one of the plurality of scanning regions included in the first wavelength conversion member overlaps part of another scanning region included in the first wavelength conversion member at a position shifted from a center portion of the another scanning region.

3 . A vehicle lighting fixture configured to form a predetermined light distribution pattern, comprising:
at least one first lighting unit and at least one second lighting unit, wherein the first lighting unit includes
a plurality of excitation light sources;
a plurality of optical deflectors provided to correspond to the plurality of excitation light sources, the optical deflector configured to include a mirror part that can two-dimensionally scan with excitation light from a corresponding one of the excitation light sources in a horizontal direction and a vertical direction;
a first wavelength conversion member configured to include a plurality of scanning regions provided to correspond to the plurality of optical deflectors such that the plurality of scanning regions can be two-dimensionally scanned by the excitation light in the horizontal direction and the vertical direction to draw a two-dimensional image in a corresponding one among the plurality of scanning regions, thereby forming a light intensity distribution image in each of the plurality of scanning regions; and
a first optical system configured to project the light intensity distribution images formed in the respective scanning regions to form a first light distribution pattern, at least one scanning region among the plurality of scanning regions configured to overlap another scanning region in part to relatively increase a light intensity of the light intensity distribution formed in the overlapped scanning region,
the second lighting unit includes:
a plurality of excitation light sources;
a plurality of optical deflectors provided to correspond to the plurality of excitation light sources, the optical deflector configured to include a mirror part that can two-dimensionally scan with excitation light from a corresponding one of the excitation light sources in a horizontal direction and a vertical direction;
a second wavelength conversion member configured to include a plurality of scanning regions provided to correspond to the plurality of optical deflectors such that the plurality of scanning regions can be two-dimensionally scanned by the excitation light in the horizontal direction and the vertical direction to draw a two-dimensional image in a corresponding scanning region among the plurality of scanning regions, thereby forming a light intensity distribution image in each of the plurality of scanning regions; and
a second optical system configured to project the light intensity distribution images formed in the respective scanning regions to form a second light distribution pattern, at least one scanning region among the plurality of scanning regions configured to overlap another scanning region in part to relatively increase a light intensity of the light intensity distribution formed in the overlapped scanning region, and
the predetermined light distribution pattern is formed by overlaying the first light distribution pattern and the second light distribution pattern on each other.

4 . The vehicle lighting fixture according to claim 3 , wherein
at least one of the plurality of scanning regions included in the first wavelength conversion member overlaps part of another scanning region included in the first wavelength conversion member at a position shifted from a center portion of the other scanning region, and at least one of the plurality of scanning regions included in the second wavelength conversion member overlaps part of another scanning region included in the second wavelength conversion member at a position shifted from a center portion of the other scanning region.

5 . The vehicle lighting fixture according to claim 1 , wherein the excitation light source is a semiconductor light emitting element that can emit excitation light and the excitation light from the semiconductor light emitting element is directly used or indirectly used via an output end face of an optical fiber guiding and outputting excitation light emitted from the semiconductor light emitting element.

6 . The vehicle lighting fixture according to claim 2 , wherein the excitation light source is a semiconductor light emitting element that can emit excitation light and the excitation light from the semiconductor light emitting element is directly used or indirectly used via an output end face of an optical fiber guiding and outputting excitation light emitted from the semiconductor light emitting element.

7 . The vehicle lighting fixture according to claim 3 , wherein the excitation light source is a semiconductor light emitting element that can emit excitation light and the excitation light from the semiconductor light emitting element is directly used or indirectly used via an output end face of an optical fiber guiding and outputting excitation light emitted from the semiconductor light e

Assignees

• Stanley Electric Co Ltd

Inventors

• Hirasawa Hiroshi

Classifications

• F21S41/675

  by moving reflectors · CPC title

• B60Q1/0041

  of several lamps in relation to each other · CPC title

• F21S41/265 Primary

  Composite lenses; Lenses with a patch-like shape · CPC title

• F21K9/64 Primary

  using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer · CPC title

• F21S41/176

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