Light system

• US 9,403,478 B2
• Filed: 05/07/2015
• Issued: 08/02/2016
• 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.
• Primary Examiner(s): Green, Tracie Y
• Application Number:
  US14/706,109
• Publication Number:
  US 20150232023A1
• Time in Patent Office: 453 Days
• US Class Current: 1/1
• 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 the first side;

a first optical element adjacent the first side and having;

a collection optic configured to direct light received from the light source; and

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

a second optical element adjacent the second side of the printed circuit board such that the printed circuit board is at least partially positioned between the first optical element and the second optical element.

2. The light system of claim 1, wherein the collection optic is located at a first portion of the first optical element and at least a portion of light directed into the first optical element propagates towards a second portion of the first optical element, and wherein the first portion is disposed opposite the second portion and the first portion has a greater height than the second portion.

3. The light system of claim 1, wherein at least a portion of light directed into the first optical element propagates in a first direction and the plurality of light steering areas are arranged side by side in a second direction that is substantially orthogonal to the first direction.

4. The light system of claim 1, wherein the light source comprises a plurality of light emitting diodes and each of the light steering areas is substantially aligned with an associated one of the plurality of light emitting diodes and is configured to steer light originating from the associated one of the plurality of light emitting diodes.

5. The light system of claim 1, wherein the collection optic is located at a first portion of the first optical element, wherein at least a portion of light directed into the first optical element propagates towards a second portion of the first optical element, and wherein the first portion has a greater height than the second portion.

6. The light system of claim 1, wherein the first and second optical elements form a single integrated optic.

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

a plurality of light sources; and

a first optical element having;

a collection optic located at a first portion of the first optical element and configured to direct light received from the plurality of light sources into the first optical element, wherein at least a portion of light directed into the first optical element propagates towards a second portion of the first optical element, and wherein the first portion has a greater height than the second portion; and

a plurality of light steering areas configured to steer light propagating in the first optical element, wherein light steered from each of the plurality of light steering areas exits the first optical element via an output surface located adjacent to the collection optic, and wherein each of the light steering areas is substantially aligned with an associated one of the plurality of light sources and is configured to steer light originating from the associated one of the plurality of light sources.

8. The light system of claim 7, further comprising a second optical element positioned parallel to the first optical element.

9. The light system of claim 8, wherein the first and second optical elements form a single integrated optic.

10. The light system of claim 8, further comprising a printed circuit board on which the plurality of light sources are disposed, wherein the printed circuit board is at least partially positioned between the first and second optical elements.

11. The light system of claim 8, wherein the second optical element receives light from the first optical element to illuminate an indicia.

12. The light system of claim 7, further comprising one of an electro-optic mirror element and a non electro-optic mirror element configured to receive light from the first optical element to illuminate an indicia.

13. The light system of claim 7, wherein at least a portion of light directed into the first optical element propagates in a first direction and the plurality of light steering areas are arranged side by side in a second direction that is substantially orthogonal to the first direction.

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

a plurality of light sources; and

a first optical element having;

a collection optic configured to direct light received from the plurality of light sources into the first optical element, wherein at least a portion of light directed into the first optical element propagates in a first direction; and

a plurality of light steering areas configured to steer light propagating in the optical element, wherein light steered from each of the plurality of light steering areas exits the first optical element via an output surface located adjacent to the collection optic, and wherein the plurality of light steering areas are arranged side by side in a second direction that is substantially orthogonal to the first direction.

15. The light system of claim 14, further comprising a second optical element positioned parallel to the first optical element.

16. The light system of claim 15, wherein the first and second optical elements form a single integrated optic.

17. The light system of claim 15, further comprising a printed circuit board on which the plurality of light sources are disposed, wherein the printed circuit board is at least partially positioned between the first and second optical elements.

18. The light system of claim 15, wherein the second optical element receives light from the first optical element to illuminate an indicia.

19. The light system of claim 14, further comprising one of an electro-optic mirror element and a non electro-optic mirror element configured to receive light from the first optical element to illuminate an indicia.

20. The light system of claim 14, wherein the collection optic is located at a first portion of the first optical element, wherein at least a portion of light directed into the first optical element propagates towards a second portion of the first optical element, and wherein the first portion has a greater height than the second portion.