Vehicle lamp having auxiliary lens with main lens

Patent metadata

Field	Value
Publication number	US-9500334-B2
Application number	US-201414781812-A
Country	US
Kind code	B2
Filing date	Apr 1, 2014
Priority date	Apr 2, 2013
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

The invention is provided with a lens and a semiconductor-type light source. The lens comprises a main lens part and an auxiliary lens par. The auxiliary lens part comprises a light entry surface, a reflection surface, a light exit surface, and a first connection surface. A light processing part for dispersing light from the semiconductor-type light source is provided to the first connection surface. As a result, this invention is able to process upwardly emitted light.

First claim

The invention claimed is:

1. A vehicle lamp comprising a lens and a semiconductor-type light source, wherein:
the lens comprises a main lens part that irradiates light from the semiconductor-type light source as a main light distribution pattern; and
an auxiliary lens part, that is provided on a periphery of the main lens part, and irradiates light from the semiconductor-type light source as an auxiliary light distribution pattern,
the auxiliary lens part comprises a light entry surface that enters light from the semiconductor-type light source into the auxiliary lens part;
a reflection surface that reflects light entering from the light entry surface to the auxiliary lens part;
a light exit surface that emits a reflection light reflected by the reflection surface to the outside from the auxiliary lens part; and
a connection surface that connects the main lens part and the light entry surface; and
the connection surface is provided with a light processing part that diffuses or shields light from the semiconductor-type light source.

2. The vehicle lamp according to claim 1 , wherein the light processing part comprises a diffusion prism that diffuses light from the semiconductor-type light source.

3. The vehicle lamp according to claim 1 , wherein:
the main lens part comprises a light entry surface that is connected to the light entry surface of the auxiliary lens part via the connection surface; and a light exit surface that forms an aspheric convex surface,
the light exit surface of the auxiliary lens part forms an aspheric convex surface, and
a bending direction of the light exit surface of the auxiliary lens part forming an aspheric convex surface is in the same direction of a bending direction of the light exit surface of the main lens part forming an aspheric surface.

4. A vehicle lamp comprising a lens and a semiconductor-type light source, wherein:
the lens comprises a main lens part that irradiates light from the semiconductor-type light source as a main light distribution pattern; and
an auxiliary lens part, that is provided on a periphery of the main lens part, and irradiates light from the semiconductor-type light source as an auxiliary light distribution pattern,
the auxiliary lens part comprises a light entry surface that enters light from the semiconductor-type light source into the auxiliary lens part;
a reflection surface that reflects light entering from the light entry surface to the auxiliary lens part;
a light exit surface that emits a reflection light reflected by the reflection surface to the outside from the auxiliary lens part; and
a connection surface that connects the main lens part and the light entry surface; and
the connection surface is formed by a surface inclined at an angle for emitting light from the semiconductor-type light source, that is, light entering from the connection surface to the auxiliary lens part, downwardly to the outside from the light exit surface of the auxiliary lens part.

5. The vehicle lamp according to claim 4 , wherein:
a flange part is provided on a periphery of the main lens part and the auxiliary lens part,
the flange part is attached to a lens holder, and
the lens holder is provided with a light shielding part that shields light emitted downwardly to the outside from a light exit surface of the auxiliary lens part.

6. The vehicle lamp according to claim 4 , wherein
the lens holder comprises a light opaque member, and comprises a low light reflective member, or a surface thereof is treated to be low light reflective.

7. The vehicle lamp according to claim 4 , wherein:
the main lens part comprises a light entry surface that is connected to the light entry surface of the auxiliary lens part via the connection surface, and a light exit surface that forms an aspheric convex surface,
the light exit surface of the auxiliary lens part forms an aspheric convex surface, and
a bending direction of the light exit surface of the auxiliary lens part forming an aspheric convex surface is in the same direction as a bending direction of the light exit surface of the main lens part forming an aspheric convex surface.

8. A vehicle lamp comprising a lens and a semiconductor-type light source, wherein:
the lens comprises a main lens part that irradiates light from the semiconductor-type light source as a main light distribution pattern; and
an auxiliary lens part, that is provided on a periphery of the main lens part, and irradiates light from the semiconductor-type light source as an auxiliary light distribution pattern,
the auxiliary lens part comprises a light entry surface that enters light from the semiconductor-type light source into the auxiliary lens part;
a reflection surface that reflects light entering from the light entry surface to the auxiliary lens part;
a light exit surface that emits a reflection light reflected by the reflection surface to the outside from the auxiliary lens part; and
a connection surface that connects the main lens part and the light entry surface; and
a light shielding part is provided in the vicinity of a light exit surface of the auxiliary lens part, the light shielding part shielding light from the semiconductor-type light source, that is, light entering from the connection surface to the auxiliary lens part, and exiting to the outside from the light exit surface of the auxiliary lens part.

9. The vehicle lamp according to claim 8 , wherein:
a flange part is provided on a periphery of the main lens part and the auxiliary lens part,
the flange part is attached to a lens holder, and
the light shielding part is provided in the lens holder.

10. The vehicle lamp according to claim 9 , wherein
the lens holder comprises a light opaque member, and comprises a low light reflective member, or a surface thereof is treated to be low light reflective.

11. The vehicle lamp according to claim 10 , wherein:
the main lens part comprises a light entry surface that is connected to the light entry surface of the auxiliary lens part via the connection surface, and a light exit surface that forms an aspheric convex surface,
the light exit surface of the auxiliary lens part forms an aspheric convex surface, and
a bending direction of the light exit surface of the auxiliary lens part forming an aspheric convex surface is in the same direction as a bending direction of the light exit surface of the main lens part forming an aspheric convex surface.

12. A vehicle lamp comprising a lens and a semiconductor-type light source, wherein:
the lens comprises a main lens part that irradiates light from the semiconductor-type light source as a main light distribution pattern; and
an auxiliary lens part, that is provided on a periphery of the main lens part, and irradiates light from the semiconductor-type light source as an auxiliary light distribution pattern,
the auxiliary lens part comprises a light entry surface that enters light from the semiconductor-type light source into the auxiliary lens part;
a reflection surface that reflects light entering from the light entry surface to the auxiliary lens part; and
a light exit surface that emits a reflection light reflected by the reflection surface to the outside from the auxiliary lens part; and
a light distribution control part, that controls a part of light distribution of the auxiliary light distribution pattern, is provided on a light exit surface side of the auxiliary lens part.

13. The vehicle lamp according to claim 12 , wherein
the light distribution control part is formed by changing an angle of a part of a light exit surface of the auxiliary lens part, and shifts a part of the auxiliary li

Assignees

• Ichikoh Industries Ltd

Inventors

• Iwasaki Kazunori

Classifications

• F21S41/321

  the reflector being a surface of revolution or a planar surface, e.g. truncated · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21S41/43

  characterised by the shape thereof · CPC title

• F21W2102/18

  for overhead signs · CPC title

• F21S41/275

  Lens surfaces, e.g. coatings or surface structures · CPC title