Vehicle lamp fitting

Patent metadata

Field	Value
Publication number	US-2016146418-A1
Application number	US-201414899685-A
Country	US
Kind code	A1
Filing date	Jun 26, 2014
Priority date	Jun 26, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

A vehicle lamp fitting comprises a lens and a semiconductor light source. The lens is composed of an incident surface and exit surfaces divided into upper region, middle region, and lower region. The exit surface in the upper region and the exit surface in the lower region emit a first light distribution pattern and a fifth light distribution pattern, respectively, which are symmetrical or substantially symmetrical with respect to a vertical line extending from the top to bottom of a screen.

First claim

1 . A vehicle lamp fitting, comprising a lens and a semiconductor light source, wherein:
the lens comprises an incident surface, and an exit surface that is divided into an upper region, a middle region, and a lower region, a focal point of the exit surface in the upper region and the exit surface of the lower region is located at the center or substantially the center of a light emission surface of the semiconductor light source, and the exit surface in the upper region and the exit surface of the lower region comprised of one surface, and emit a diffused light distribution pattern.

2 . The vehicle lamp fitting according to claim 1 , wherein
the exit surface in the middle region is, in a front view, divided by a plurality of, at least two, vertical division lines substantially equal distance to the left and right from the center of the semiconductor light source.

3 . The vehicle lamp fitting according to claim 1 , wherein
a left and right ends of the exit surface in the middle region are, in a front view, substantially equal distance from the center of the semiconductor light source.

4 . The vehicle lamp fitting according to claim 1 , wherein:
the exit surface in the middle region is divided from left to right into three portions, an opposite lane side, a center, and a driving lane side, the exit surface on the opposite lane side of the middle region emits an opposite lane side diffused light distribution pattern, the exit surface in the center of the middle region emits a central condensed light distribution pattern, and the exit surface on the driving lane side of the middle region emits a driving lane side diffused light distribution pattern.

5 . The vehicle lamp fitting according to claim 1 , wherein
the center of the light emission surface of the semiconductor light source is located on a reference optical axis or in the vicinity thereof.

6 . The vehicle lamp fitting according to claim 1 , wherein
the lens is provided in a part of the incident surface, and is further provided with a light diffusing unit for diffusing a part of light distribution of the light distribution pattern.

7 . A vehicle lamp fitting, comprising a lens and a semiconductor light source, wherein:
the lens comprises: an incident surface for entering light from the semiconductor light source into the lens, an exit surface for emitting the incident light entered from the incident surface to the outside from the lens as a predetermined light distribution pattern, and a light diffusing unit that is provided in a part of the incident surface, and diffuses a part of light distribution of the light distribution pattern.

8 . The vehicle lamp fitting according to claim 7 , wherein:
the exit surface is divided into a plurality of parts, and the light diffusing unit is provided in a range corresponding to the divided exit surface of the incident surface.

9 . The vehicle lamp fitting according to claim 7 , wherein:
the light distribution pattern is a low beam light distribution pattern, and the light diffusing unit is provided in the incident surface, that is, on a horizontal line passing through a reference optical axis or in the vicinity thereof, in a part of an opposite lane side, and is configured to diffuse at least a part of the light distribution pattern having a cutoff line on the opposite lane side of the low beam light distribution pattern, in a vertical direction or substantially vertical direction.

10 . The vehicle lamp fitting according to claim 7 , wherein
the light diffusing unit is provided in a part of the lower side of the incident surface, and is configured to diffuse at least a part of the lower side of the light distribution pattern in vertical and horizontal directions or substantially vertical and horizontal directions.

Assignees

• Ichikoh Industries Ltd

Inventors

• Iwasaki Kazunori

Classifications

• F21S41/151

  arranged in one or more lines · CPC title

• F21S41/26

  Elongated lenses · CPC title

• F21S41/255

  Lenses with a front view of circular or truncated circular outline · CPC title

• F21S41/265

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

• F21S41/27

  Thick lenses · CPC title