Low profile highly efficient LED lighting modules and assemblies

Patent metadata

Field	Value
Publication number	US-9573512-B2
Application number	US-201514800007-A
Country	US
Kind code	B2
Filing date	Jul 15, 2015
Priority date	Jan 8, 2013
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

A lighting module is provided that includes a single-piece lens having an input surface including a plurality of near-field lens elements, and an exit surface, each element having a different focal length. The lighting module also includes light-emitting diode (LED) source positioned to direct incident light through the input surface. Further, the elements are configured to shape the light from the input surface into a collimated light pattern emanating from the exit surface containing at least 60% of the incident light.

First claim

What is claimed is:

1. A lighting module, comprising:
a single-piece lens having an input surface including a plurality of near-field lens elements, and an exit surface, each element having a different focal length; and
an LED source positioned to direct incident light through the input surface,
wherein the elements are configured to shape the light from the input surface into a collimated light pattern emanating from the exit surface containing at least 60% of the incident light.

2. The lighting module according to claim 1 , wherein the light source and the exit surface of the lens collectively define a depth of approximately 50 millimeters or less.

3. The lighting module according to claim 1 , wherein the light source and the exit surface of the lens collectively define a depth of approximately 25 millimeters or less.

4. The lighting module according to claim 1 , wherein the exit surface of the lens comprises a plurality of optical elements configured to shape the collimated light pattern into a low-beam headlight pattern.

5. The lighting module according to claim 4 , wherein the collimated light pattern has a spread of 10 degrees or less.

6. The lighting module according to claim 1 , wherein the exit surface of the lens comprises a plurality of optical elements configured to shape the collimated light pattern into a high-beam headlight pattern.

7. The lighting module according to claim 6 , wherein the collimated light pattern has a spread of 10 degrees or less.

8. A lighting module, comprising:
a lens having an input surface including a plurality of near-field lens elements, and an exit surface, at least one element having a unique focal length; and
an LED source positioned to direct incident light through the input surface,
wherein the elements are configured to shape the light from the input surface into a collimated light pattern emanating from the exit surface containing at least 60% of the incident light.

9. The lighting module according to claim 8 , wherein the light source and the exit surface of the lens collectively define a depth of approximately 50 millimeters or less.

10. The lighting module according to claim 8 , wherein the light source and the exit surface of the lens collectively define a depth of approximately 25 millimeters or less.

11. The lighting module according to claim 8 , wherein the exit surface of the lens is arranged in a substantially circular shape.

12. The lighting module according to claim 8 , wherein the exit surface of the lens is arranged in a substantially rectangular shape.

13. The lighting module according to claim 8 , wherein the exit surface of the lens comprises a plurality of optical elements configured to shape the collimated light pattern into a low-beam headlight pattern.

14. A lighting module, comprising:
a single-piece lens having an input surface including a plurality of near-field lens elements, and an exit surface, at least one element having a unique focal length; and
an LED source positioned to direct incident light through the input surface,
wherein the elements are configured to shape the light from the input surface into a collimated light pattern emanating from the exit surface containing at least 60% of the incident light.

15. The lighting module according to claim 14 , wherein the light source and the exit surface of the lens collectively define a depth of approximately 50 millimeters or less.

16. The lighting module according to claim 14 , wherein the light source and the exit surface of the lens collectively define a depth of approximately 25 millimeters or less.

17. The lighting module according to claim 14 , wherein the exit surface of the lens comprises a plurality of optical elements configured to shape the collimated light pattern into a low-beam headlight pattern.

18. The lighting module according to claim 17 , wherein the collimated light pattern has a spread of 10 degrees or less.

19. The lighting module according to claim 14 , wherein the exit surface of the lens comprises a plurality of optical elements configured to shape the collimated light pattern into a high-beam headlight pattern.

20. The lighting module according to claim 19 , wherein the collimated light pattern has a spread of 10 degrees or less.

Assignees

• Ford Global Tech Llc

Inventors

• Kumar Arun
• Dassanayake Mahendra Somasara
• Ekladyous Albert
• Williams Bruce Preston

Classifications

• F21S43/20

  characterised by refractors, transparent cover plates, light guides or filters · CPC title

• F21S43/14

  Light emitting diodes [LED] · CPC title

• F21S43/40

  characterised by the combination of reflectors and refractors · CPC title

• F21S43/315

  using total internal reflection · CPC title

• B60Q1/04

  the devices being headlights · CPC title