LIGHT SYSTEM

• US 20140185310A1
• Filed: 12/27/2013
• Published: 07/03/2014
• Est. Priority Date: 12/27/2012
• Status: Active Grant

• Current Assignee: Gentex Corporation
• Original Assignee: Gentex Corporation
• Inventors: Lisowski, Michael F., Minikey, Danny L. Jr.
• Granted Patent: US 9,028,119 B2
• Time in Patent Office: Days
• US Class Current: 362/516
• CPC Class Codes: B60Q 1/2665 on rear-view mirrors lighting devices for vehicle interior on or for rear-view mirrors B60Q3/258
• CPC Class Codes: B60Q 3/258 Rear-view mirrors
• CPC Class Codes: B60R 1/1207 with lamps; with turn indicators
• CPC Class Codes: B60R 2001/1215 with information displays
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/315 using total internal reflection
• CPC Class Codes: F21S 43/40 characterised by the combination of reflectors and refractors

Abstract

According to another aspect of the present invention, a light system for use in a rearview mirror assembly is provided and includes a light source and a first optical element. Said first optical element has a collection optic configured to direct light received from said light source, a reflector optic in optical communication with said collection optic and configured to reflect light from said collection optic, a plurality of light steering areas configured to steer light propagating in said first optical element, and a light spreading optic configured to spread light exiting said first optical element. A second optical element is in optical communication with said first optical element and is configured to diffuse light received from said first optical element to illuminate an indicia.

Claims

1. A light system for use in a rearview mirror assembly, comprising:

a printed circuit board having a first side and a second side;

a light source located on said first side;

a first optical element coupled to said first side and having;

a collection optic configured to direct light received from said light source;

a reflector optic in optical communication with said collection optic and configured to reflect light received from said collection optic; and

a plurality of light steering areas configured to steer light propagating in said first optical element, wherein light steered from each of said plurality of light steering areas exits said first optical element via an output surface located adjacent to said collection optic; and

a second optical element coupled to said second side and in optical communication with said first optical element, wherein said second optical element is configured to diffuse light received from said first optical element to illuminate an indicia.

2. The light system of claim 1, wherein said collection optic is elongate and said light source comprises a plurality of light emitting diodes spaced along a length of said collection optic and proximately aligned with said collection optic.

3. The light system of claim 1, wherein each of said plurality of light steering areas is located at a different distance from said reflector optic than the others of said plurality of light steering areas and is staggered relative to the others of said plurality of light steering areas.

4. The light system of claim 1, wherein said indicia is located on a structure selected from a group comprising:

said second optical element, an electro-optic mirror element, and a non electro-optic mirror element.

5. The light system of claim 1, wherein said printed circuit board has a gap, through which light exiting said first optical element propagates towards and is received in said second optical element.

6. The light system of claim 1, further comprising a cover configured to cooperate with said second optical element to define a housing that encloses said printed circuit board, said light source, and said first optical element.

7. A light system for use in a rearview mirror assembly, comprising:

a light source;

a first optical element having;

a collection optic configured to direct light received from said light source;

a reflector optic in optical communication with said collection optic and configured to reflect light from said collection optic;

a plurality of light steering areas configured to steer light propagating in said first optical element; and

a light spreading optic configured to spread light exiting said first optical element; and

a second optical element in optical communication with said first optical element and configured to diffuse light received from said first optical element to illuminate an indicia.

8. The light system of claim 7, further comprising a printed circuit board having a first side and a second side, wherein said light source is located on said first side, said first optical element is coupled to said first side, and said second optical element is coupled to said second side.

9. The light system of claim 8, wherein said printed circuit board has a gap, through which light exiting said first optical element propagates towards and is received in said second optical element.

10. The light system of claim 9, wherein said first optical element is located in an elevated position relative to said light source and said second optical element contacts said second side of said printed circuit board.

11. The light system of claim 7, wherein said collection optic is elongate and said light source comprises a plurality of light emitting diodes spaced along a length of said collection optic and proximately aligned with said collection optic.

12. The light system of claim 7, wherein each of said plurality of light steering areas is located at a different distance from said reflector optic than the others of said plurality of light steering areas and is staggered relative to the others of said plurality of light steering areas.

13. The light system of claim 7, wherein said indicia is located on a structure selected from a group comprising:

said second optical element, an electro-optic mirror element, and a non electro-optic mirror element.

14. A light system for use in a rearview mirror assembly, comprising:

a light source;

a first optical element having;

a collection optic configured to direct light received from said light source;

a reflector optic in optical communication with said collection optic and configured to reflect light received from said collection optic; and

at least one light steering area configured to steer light reflected from said reflector optic, wherein light steered from said at least one light steering area exits said first optical element via an output surface located adjacent to said collection optic.

15. The light system of claim 14, further comprising a second optical element in optical communication with said first optical element and configured to diffuse light exiting said first optical element to illuminate an indicia.

16. The light system of claim 15, further comprising a printed circuit board having a first side and a second side, wherein said light source is located on said first side, said first optical element is coupled to said first side, and said second optical element is coupled to said second side.

17. The light system of claim 16, wherein said printed circuit board has a gap, through which light exiting said first optical element propagates towards and is received in said second optical element.

18. The light system of claim 15, wherein said indicia is located on a structure selected from a group comprising:

said second optical element, an electro-optic mirror element, and a non electro-optic mirror element.

19. The light system of claim 14, wherein said collection optic is elongate and said light source comprises a plurality of light emitting diodes spaced along a length of said collection optic and proximately aligned with said collection optic.

20. The light system of claim 14, wherein each of said plurality of light steering areas is located at a different distance from said reflector optic than the others of said plurality of light steering areas and is staggered relative to the others of said plurality of light steering areas.