Lamp for vehicle

• US 10,697,608 B2
• Filed: 10/15/2018
• Issued: 06/30/2020
• Est. Priority Date: 11/29/2017
• Status: Active Grant

• Current Assignee: SL Corporation
• Original Assignee: SL Corporation
• Inventors: Kim, Dong Hyun, Jung, Byoung Hwa
• Primary Examiner(s): Tso, Laura K
• Application Number:
  US16/159,985
• Publication Number:
  US 20190162383A1
• Time in Patent Office: 624 Days
• Field of Search: 362511, 362616, 362547, 362517, 362601, 362602, 362603, 362625, 362626
• CPC Class Codes: F21S 41/125 Coloured light
• CPC Class Codes: F21S 41/24 Light guides
• CPC Class Codes: F21S 43/239 plate-shaped
• CPC Class Codes: F21S 43/245 emitting light from one or more of its major surfaces
• CPC Class Codes: F21S 43/249 with two or more light sources being coupled into the light guide
• CPC Class Codes: G02B 6/0036 2-D arrangement of prisms, protrusions, indentations or roughened surfaces
• CPC Class Codes: G02B 6/006 to produce indicia, symbols, texts or the like

Abstract

A lamp for a vehicle capable of forming an image having a three-dimensional effect is provided. The lamp for the vehicle includes a first image forming part configured to emit light incident from at least one first light source to form a first image, and a second image forming part configured to emit light incident from at least one second light source to form a second image combined with the first image to form a predetermined pattern shape, wherein the light emitted from the second image forming part passes through the first image forming part to form the second image, and the first image and the second image have different color characteristics.

Claims

1. A lamp for a vehicle comprising:

a first image forming part configured to emit light incident from at least one first light source to form a first image; and

a second image forming part configured to emit light incident from at least one second light source to form a second image combined with the first image to form a predetermined pattern shape,

wherein the light emitted from the second image forming part passes through the first image forming part to form the second image, and the first image and the second image have different color characteristics,

wherein the first image forming part includes a first pattern part configured to reflect the light incident from the at least one first light source to a first emitting surface to form the first image on one surface thereof,

wherein the second image forming part includes a second pattern part configured to reflect the light incident from the at least one second light source to a second emitting surface to form the second image on one surface thereof,

wherein each of the first pattern part and the second pattern part includes at least one optical pattern formed to extend in a predetermined direction,

wherein the first pattern part is configured to reflect the light at different light amounts based on an angle between a forming direction of the at least one optical pattern of the first pattern part and a light axis of the at least one first light source; and

wherein the second pattern part is configured to reflect the light at different light amounts based on an angle between a forming direction of the at least one optical pattern of the second pattern part and a light axis of the at least one second light source.

2. The lamp for the vehicle of claim 1, wherein the color characteristic includes at least one of a color, a brightness, or a chroma.

3. The lamp for the vehicle of claim 1, wherein a surface of the first image forming part in which the first pattern part is disposed to face the second emitting surface of the second image forming part.

4. The lamp for the vehicle of claim 1, wherein a color characteristic of the first image is varied by at least one of a color characteristic of the at least one first light source, a color characteristic of the first image forming part, or a light amount of the light reflected by the first pattern part.

5. The lamp for the vehicle of claim 1, wherein a color characteristic of the second image is varied by at least one of a color characteristic of the at least one second light source, a color characteristic of the first image forming part, a color characteristic of the second image forming part, or a light amount of the light reflected by the second pattern part.

6. The lamp for the vehicle of claim 1, wherein the at least one optical pattern has a width of about 0.5 to 2 mm.

7. The lamp for the vehicle of claim 1, wherein the at least one optical pattern has a shape of at least a part of a circumference of a circle having a radius of about 50 to 70% of a width of the at least one optical pattern.

8. The lamp for the vehicle of claim 7, wherein a diffusion angle of light reflected by the at least one optical pattern is varied based on a ratio of the radius to the width of the at least one optical pattern.

9. The lamp for the vehicle of claim 1, wherein each of the at least one first light source and the at least one second light source generates substantially white light of which color coordinates (x, y) of a color coordinate system are included in a scope of 0.310≤

x≤

0.500 and 0.283≤

y≤

0.440.

10. The lamp for the vehicle of claim 9, wherein each of the at least one first light source and the at least one second light source generates light having a color temperature that ranges from about 2500 k to about 6500 k.

11. The lamp for the vehicle of claim 1, wherein each of the at least one first light source and the at least one second light source generates substantially red light of which color coordinates (x, y) of a color coordinate system are included in a scope of 0.645≤

x≤

0.735 and 0.259≤

y≤

0.335.

12. The lamp for the vehicle of claim 11, wherein each of the at least one first light source and the at least one second light source generates light having a wavelength ranging from about 610 to about 680 nm.

13. The lamp for the vehicle of claim 1, wherein the pattern shape has a first part and a second part having different depths based on a difference between the color characteristics of the first image and the second image.

14. A lamp for a vehicle comprising:

a first image forming part configured to emit light incident from at least one first light source to form a first image; and

a second image forming part configured to emit light incident from at least one second light source to form a second image combined with the first image to form a predetermined pattern shape,

wherein the light emitted from the second image forming part passes through the first image forming part to form the second image, and the first image and the second image have different color characteristics, and

wherein the pattern shape includes a first part and a second part having different depths based on a difference between the color characteristics of the first image and the second image.

15. A lamp for a vehicle comprising:

a first image forming part configured to emit light incident from at least one first light source to form a first image; and

a second image forming part configured to emit light incident from at least one second light source to form a second image combined with the first image to form a predetermined pattern shape,

wherein the light emitted from the second image forming part passes through the first image forming part to form the second image, and the first image and the second image have different color characteristics,

wherein at least of the first image forming part or the second image forming part includes a first optical pattern formed to extend in a first direction and a second optical pattern formed to extend in a second direction different from the first direction, and

wherein the first optical pattern and the second optical pattern are configured to reflect different amounts of light due to a difference between the first direction and the second direction.