Head lamp apparatus

Patent metadata

Field	Value
Publication number	US-10168014-B2
Application number	US-201715789766-A
Country	US
Kind code	B2
Filing date	Oct 20, 2017
Priority date	Apr 26, 2017
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A head lamp apparatus may include: a light source unit including first and second light sources; a lens separated from the light source unit; a first optic rod having a first light receiving surface, and emitting light received from the first light source toward the lens through a first light emitting surface; and a second optic rod having a second light receiving surface, and emitting light received from the second light source toward the lens through a second light emitting surface. At least one of the first and second light emitting surfaces may be positioned on a Petzval surface of the lens.

First claim

What is claimed is:

1. A head lamp apparatus comprising:
a light source unit comprising first and second light sources;
a lens separated from the light source unit;
a first optic rod having a first light receiving surface, and configured to emit light received from the first light source toward the lens through a first light emitting surface; and
a second optic rod having a second light receiving surface, and configured to emit light received from the second light source toward the lens through a second light emitting surface,
wherein at least one of the first and second light emitting surfaces is positioned on a Petzval surface of the lens,
wherein at least one of the first and second light emitting surfaces is inclined in a direction away from the Petzval surface.

2. The head lamp apparatus of claim 1 , wherein the first light emitting surface has a larger area than the first light receiving surface.

3. The head lamp apparatus of claim 1 , wherein the first light source configured to serve as a low-beam light source, and the second light source configured to serve as a high-beam light source.

4. A head lamp apparatus comprising:
a light source unit comprising first and second light sources;
a lens separated from the light source unit;
a first optic rod having a first light receiving surface, and configured to emit light received from the first light source toward the lens through a first light emitting surface; and
a second optic rod having a second light receiving surface, and configured to emit light received from the second light source toward the lens through a second light emitting surface,
wherein at least one of the first and second light emitting surfaces is positioned on a Petzval surface of the lens,
wherein the first light emitting surface has a larger area than the first light receiving surface,
wherein the second light emitting surface has a larger area than the second light receiving surface.

5. A head lamp apparatus comprising:
a light source unit comprising first and second light sources;
a lens separated from the light source unit;
a first optic rod having a first light receiving surface, and configured to emit light received from the first light source toward the lens through a first light emitting surface; and
a second optic rod having a second light receiving surface, and configured to emit light received from the second light source toward the lens through a second light emitting surface,
wherein at least one of the first and second light emitting surfaces is positioned on a Petzval surface of the lens,
wherein the first optic rod comprises:
a first light receiving part having the first light receiving surface formed thereon, and formed in a shape of which a cross-sectional area increases and then decreases toward the first light emitting surface; and
a first light emitting part having the first light emitting surface formed thereon, connected to the first light receiving part, and formed in a shape of which a cross-sectional area increases toward the first light emitting surface.

6. The head lamp apparatus of claim 5 , wherein the first optic rod has a first contact surface formed as a flat surface, the first contact surface facing the second optic rod, and
a separation deposition surface is formed between the first contact surface and the second optic rod, and configured to prevent an interference between the lights guided by the first and second optic rods.

7. The head lamp apparatus of claim 6 , wherein the first optic rod has a first outer surface corresponding to the opposite surface of the first contact surface, the first outer surface including a Bezier surface.

8. The head lamp apparatus of claim 6 , wherein the second optic rod comprises a second contact surface facing the first optic rod, and the second contact surface is formed as a flat surface.

9. The head lamp apparatus of claim 5 , wherein the head lamp apparatus comprises a plurality of first light sources, and
a plurality of first light receiving parts are installed to correspond to the plurality of first light sources, respectively.

10. The head lamp apparatus of claim 5 , wherein the first light emitting part has a shape of which the thickness decreases from the widthwise center toward the outside in the widthwise direction.

Assignees

• Hyundai Mobis Co Ltd

Inventors

• Lee Hyun Soo

Classifications

• F21Y2105/12

  characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities · CPC title

• F21S41/663

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

• F21S41/285

  Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805 · CPC title

• F21S41/255

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

• F21S41/25

  Projection lenses · CPC title