Lighting device with optical waveguides

Patent metadata

Field	Value
Publication number	US-9939120-B2
Application number	US-201615296470-A
Country	US
Kind code	B2
Filing date	Oct 18, 2016
Priority date	Oct 23, 2015
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A lighting device that includes a series of optical waveguides each able to allow rays of light to be waveguided between an entry face, arranged at a proximal end of the optical waveguide, and an exit face. The device is formed of at least two subassemblies produced separately and each including at least a portion of the series of optical waveguides and first structural elements for retaining the waveguides in position and joining successive optical waveguides of the subassembly together, the two subassemblies being able to be assembled to form the device through collaboration of the first structural elements. The distal ends of at least two successive optical waveguides of the series are connected by a piece of translucent or transparent flexible material.

First claim

What is claimed is:

1. A lighting module able to be mounted in a motor vehicle headlight, wherein said lighting module includes first means including a lighting device including a series of optical waveguides each able to allow rays of light to be waveguided between an entry face, arranged at a proximal end of each of said series of optical waveguides, and an exit face,
wherein said lighting device is formed of at least two subassemblies produced separately and each including at least a portion of said series of optical waveguides and first structural elements for retaining said series of optical waveguides in position and joining successive optical waveguides of said at least two subassemblies together, said at least two subassemblies being able to be assembled to form said lighting device,
wherein distal ends of at least two successive optical waveguides of said series of optical waveguides are connected by a piece of translucent or transparent flexible material;
wherein said lighting device participates in the production of a plurality of light segments that can be activated selectively.

2. The lighting module according to claim 1 , wherein said series of optical waveguides are disposed so that the respective distal ends, carrying said exit face, of two adjacent waveguides are in contact with each other and so that the respective proximal ends, carrying said entry face, of said two adjacent waveguides are transversely spaced from each other.

3. The lighting module according to claim 1 , wherein said distal ends of each of said series of optical waveguides are covered by said piece of translucent or transparent flexible material which forms a continuous strip extending downstream of the entire of said series of optical waveguides.

4. The lighting module according to claim 3 , wherein said piece of translucent or transparent flexible material has a continuous face extending away from said series of optical waveguides and forming a common exit face that said series of optical waveguides of said lighting device have in common.

5. The lighting module according to claim 1 , wherein said piece of translucent or transparent flexible material is disposed between at least two distal ends of two successive optical waveguides of said lighting device.

6. The lighting module according to claim 1 , wherein at least a first subassembly further includes a second structural element, distinct from said first structural element and able to connect said distal ends of said series of optical waveguides of said first subassembly.

7. The lighting module according to claim 6 , wherein said second structural element consists of a strip made of a translucent or transparent material and disposed transversely, downstream of said distal ends in the path of said rays of light, said strip and two successive waveguides of said first subassembly defining a housing to accommodate said distal end of a waveguide of said second subassembly so that said exit face of said waveguide rests against said strip.

8. The lighting module according to claim 7 , wherein said piece of translucent or transparent flexible material is disposed in said accommodating housing.

9. The lighting module according to claim 7 , wherein said piece of translucent or transparent flexible material is overmolded onto said second structural element and onto a face of the successive waveguides of said first subassembly that defines said accommodating housing.

10. The lighting module according to claim 1 , wherein said piece of translucent or transparent flexible material is made from a material that has a refractive index substantially close to, or even identical to, that of a material of said series of optical waveguides.

11. The lighting module according to claim 1 , wherein said piece of translucent or transparent flexible material is made from a material that has greater flexibility than the flexibility of a material used to produce said series of optical waveguides.

12. The lighting module for motor vehicle lighting and/or signaling according to claim 1 , wherein said lighting module includes second means adapted to produce a first cut-off beam directed toward a projection device arranged at an exit of said lighting module, said plurality of light segments produced by said first means forming a second beam directed toward said projection device and complementary to said first cut-off beam when they are activated simultaneously.

13. The lighting module according to claim 12 , wherein said second means include at least one optical means, at least one light source disposed at the level of a focus of said at least one optical means and a shield disposed on the path of the rays of light coming from said at least one light source and deflected by said at least one optical means so as to produce the beam with a cutoff, and in that said series of optical waveguides of said lighting device are disposed in such a way as to be in contact with said shield.

14. The lighting module according to claim 13 , wherein said series of optical waveguides are oriented in such a way as to be in contact with said shield only in the vicinity of a focal zone of said projection device.

15. The lighting module according to claim 13 , wherein contact with said shield is established at the level of said piece of flexible translucent or transparent material.

16. A lighting system comprising at least one lighting module according to claim 12 , and control means for turning on, turning off or modifying the luminous power emitted by said first means and said second means of said lighting module.

17. The lighting module according to claim 2 , wherein said distal end of each of said series of optical waveguides is covered by said piece of translucent or transparent flexible material which forms a continuous strip extending downstream of the entire of said series of optical waveguides.

18. The lighting according to claim 2 , wherein said piece of translucent or transparent flexible material is disposed between at least two distal ends of two successive optical waveguides of said lighting device.

19. The lighting module according to claim 14 , wherein contact with said shield is established at the level of said piece of flexible translucent or transparent material.

Assignees

• Valeo Vision

Inventors

• Beev Kostadin
• Puente Jean-Claude
• Godbillon Vincent

Classifications

• B60Q1/143

  combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers · CPC title

• F21S41/143

  the main emission direction of the LED being parallel to the optical axis of the illuminating device · CPC title

• F21S41/24 Primary

  Light guides · CPC title

• F21S41/25

  Projection lenses · CPC title

• B60Q3/62

  using light guides · CPC title