Vehicle lighting fixture

Patent metadata

Field	Value
Publication number	US-2016356444-A1
Application number	US-201615174153-A
Country	US
Kind code	A1
Filing date	Jun 6, 2016
Priority date	Jun 8, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A vehicle lighting fixture can control the light distribution with higher accuracy while suppressing the light intensity unevenness of the light distribution even with a plurality of light sources used. The vehicle lighting fixture can include: a plurality of LED elements arranged in a vertical direction and a lateral direction; a projector lens assembly including two projector lenses disposed in front of the plurality of LED elements and configured to project light emitted from the plurality of LED elements forward; and an image shifter disposed in an optical path from the plurality of LED elements to a position forward of the projector lenses. The image shifter can include a plurality of prisms configured to widen light source images of the plurality of LED elements in the vertical and lateral directions.

First claim

What is claimed is:

1 . A vehicle lighting fixture comprising:
a plurality of light sources having a light emitting direction and arranged in a predetermined arranging direction orthogonal to the light emitting direction; a projector lens assembly disposed in front of the plurality of light sources and configured to project light emitted from the plurality of light sources forward; and an optical lens disposed in an optical path from the plurality of light sources to a position forward of the projector lens assembly, the optical lens including a plurality of prisms configured to widen light source images of the plurality of light sources in the predetermined arranging direction.

2 . The vehicle lighting fixture according to claim 1 , wherein the plurality of prisms each extend in a direction orthogonal to the arranging direction and be disposed side by side in the arranging direction.

3 . The vehicle lighting fixture according to claim 2 , wherein the plurality of prisms are each formed to have a triangular cross section orthogonal to the direction in which the prisms extend, and include two types of prisms having mutually different base angles in the triangular cross section, and
the two types of prisms are configured such that a ratio of the base angles is 3:1.

4 . The vehicle lighting fixture according to claim 1 , wherein
the plurality of light sources are arranged in a matrix form in two arranging directions substantially orthogonal to each other, and the optical lens has two sets of the plurality of prisms corresponding to the two arranging directions and formed in front and rear surfaces of the optical lens.

5 . The vehicle lighting fixture according to claim 2 , wherein
the plurality of light sources are arranged in a matrix form in two arranging directions substantially orthogonal to each other, and the optical lens has two sets of the plurality of prisms corresponding to the two arranging directions and formed in front and rear surfaces of the optical lens

6 . The vehicle lighting fixture according to claim 3 , wherein
the plurality of light sources are arranged in a matrix form in two arranging directions substantially orthogonal to each other, and the optical lens has two sets of the plurality of prisms corresponding to the two arranging directions and formed in front and rear surfaces of the optical lens.

7 . The vehicle lighting fixture according to claim 1 , wherein
the projector lens assembly includes two projector lenses provided adjacent to each other in the light emitting direction, and the optical lens is disposed in between the two projector lenses.

8 . The vehicle lighting fixture according to claim 2 , wherein
the projector lens assembly includes two projector lenses provided adjacent to each other in the light emitting direction, and the optical lens is disposed in between the two projector lenses.

9 . The vehicle lighting fixture according to claim 3 , wherein
the projector lens assembly includes two projector lenses provided adjacent to each other in the light emitting direction, and the optical lens is disposed in between the two projector lenses.

10 . The vehicle lighting fixture according to claim 4 , wherein
the projector lens assembly includes two projector lenses provided adjacent to each other in the light emitting direction, and the optical lens is disposed in between the two projector lenses.

11 . The vehicle lighting fixture according to claim 5 , wherein
the projector lens assembly includes two projector lenses provided adjacent to each other in the light emitting direction, and the optical lens is disposed in between the two projector lenses.

12 . The vehicle lighting fixture according to claim 6 , wherein
the projector lens assembly includes two projector lenses provided adjacent to each other in the light emitting direction, and the optical lens is disposed in between the two projector lenses.

Assignees

• Stanley Electric Co Ltd

Inventors

• Ohno Masafumi

Classifications

• F21S41/153

  arranged in a matrix · CPC title

• F21S41/155 Primary

  Surface emitters, e.g. organic light emitting diodes [OLED] · CPC title

• F21S41/663

  by switching light sources (by switching incandescent light sources F21S41/162) · CPC title

• F21S43/14

  Light emitting diodes [LED] · CPC title

• F21S43/26

  Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255 · CPC title