Lamp for vehicle

Patent metadata

Field	Value
Publication number	US-12018808-B2
Application number	US-202218145978-A
Country	US
Kind code	B2
Filing date	Dec 23, 2022
Priority date	May 4, 2022
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

Disclosed is a lamp for a vehicle. The lamp for a vehicle includes a light source part that generates and outputs light, and a lens array provided on a front side of the light source part, the lens array includes a first lens part including a plurality of first micro lenses, to which the light is input from the light source part, a second lens part including a plurality of second micro lenses that outputs the light input from the first lens part, and a shield part located between the first lens part and the second lens part, and that shields a portion of the light input from the first lens part to the second lens part to form a specific beam pattern on a road surface, and the shield part is provided to be movable to change a lamp image of the beam pattern formed on the road surface.

First claim

What is claimed is:

1. A lamp for a vehicle comprising:
a light source configured to irradiate light;
a lens array provided on a front side of the light source; and
a driving part connected to the lens array,
wherein the lens array comprises:
a first lens including a plurality of first micro lenses configured to receive and transmit the light irradiated from the light source;
a second lens including a plurality of second micro lenses configured to transmit the light transmitted by the first lens; and
a shield disposed between the first and second lenses and configured to:
shield a portion of the light transmitted from the first lens part to form a beam pattern on a road surface near the vehicle, and
change an image of the beam pattern projected on the road surface,

wherein the driving part includes:
first and second rollers spaced apart from each other; and
an actuator connected to the first roller and configured to rotate the first roller, and

wherein the shield extends between and wraps around the first and second rollers such that, when the first roller is rotated, the shield moves around the first and second rollers.

2. The lamp of claim 1 , wherein the shield includes:
a shield body; and
a plurality of unit masks disposed, at the shield body, respectively corresponding to the plurality of second micro lenses and having a masking pattern for forming the beam pattern.

3. The lamp of claim 2 , wherein each of the unit masks includes:
a shield area configured to shield the light; and
a through area configured to transmit the light and having a shape corresponding to that of the masking pattern.

4. The lamp of claim 2 , wherein the plurality of masking patterns has the same shape.

5. The lamp of claim 1 , wherein the plurality of second micro lenses have the same curvature.

6. A lamp for a vehicle comprising:
a light source configured to irradiate light; and
a lens array provided on a front side of the light source and comprising:
a first lens including a plurality of first micro lenses configured to receive and transmit the light irradiated from the light source;
a second lens including a plurality of second micro lenses configured to transmit the light transmitted by the first lens; and
a shield disposed between the first and second lenses and configured to:
shield a portion of the light transmitted from the first lens part to form a beam pattern on a road surface near the vehicle, and
change an image of the beam pattern projected on the road surface,

wherein the shield includes:
a shield body; and
a plurality of unit masks disposed, at the shield body, respectively corresponding to the plurality of second micro lenses and having a masking pattern for forming the beam pattern,

wherein a driving part includes:
first and second rollers spaced apart from each other in a vertical direction and having an outer surface engaged with the shield body; and
an actuator connected to a rotary shaft of the first roller and configured to rotate the first roller, and

wherein the shield body is configured to rotate together with the first or second roller when the first roller is rotated.

7. The lamp of claim 6 , wherein the first and second rollers are parallel to each other.

8. The lamp of claim 6 , wherein the driving part is configured to change a rotational speed of the first or second roller.

9. The lamp of claim 6 , wherein:
a focus of the second micro lens is located on the shield, and
the shield is configured such that shapes of the masking patterns of the unit masks located on focuses of the plurality of second micro lenses are always the same when the actuator is driven.

10. The lamp of claim 9 , wherein:
the shield includes a rear part facing the first micro lens and a front part facing the second micro lens, and
the unit mask is located on the front part of the shielding part.

Assignees

• Hyundai Mobis Co Ltd

Inventors

• Lee Hyun Soo
• Kang Dong Hwa

Classifications

• F21S41/47

  Attachment thereof (achieving variable light distribution by movable screens F21S41/683) · CPC title

• G02B3/0056 Primary

  arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085) · CPC title

• F21W2103/60

  Projection of signs from lighting devices, e.g. symbols or information being projected onto the road · CPC title

• B60Q2400/50

  Projected symbol or information, e.g. onto the road or car body · CPC title

• B60Q1/50

  for indicating other intentions or conditions, e.g. request for waiting or overtaking · CPC title