Sensor for vehicle accessories

• US 5,223,814 A
• Filed: 11/14/1991
• Issued: 06/29/1993
• Est. Priority Date: 12/05/1988
• Status: Expired due to Fees

• Current Assignee: Gentex Corporation
• Original Assignee: Prince (Wellman Holdings, Inc.)
• Inventors: Suman, Michael J.
• Primary Examiner(s): Crosland, Donnie L.
• Time in patent office: 593 Days
• Field of Search: 340/525, 340/461, 340/462, 340/980, 362/82.1, 362/80.1, 250/336.1, 250/200, 250/214 AL
• US Class Current: 340/525
• CPC Class Codes: B60R 1/088 using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
• CPC Class Codes: B60R 1/12 Mirror assemblies combined with other articles, e.g. clocks
• CPC Class Codes: B60R 1/1207 with lamps; with turn indicators
• CPC Class Codes: B60R 2001/1215 with information displays
• CPC Class Codes: B60R 2001/1223 with sensors or transducers
• CPC Class Codes: B60R 2001/123 with thermometers
• CPC Class Codes: B60R 2001/1284 with communication systems other than radio-receivers, e.g. keyless entry systems, navigation systems; with anti-collision systems
• CPC Class Codes: G07C 2009/00928 for garage doors
• CPC Class Codes: G08C 2201/20 Binding and programming of remote control devices

Abstract

A vehicle accessory includes a reflective element for reflecting light to a photo-sensor positioned within the accessory'"'"'s housing for controllably detecting an ambient light level. The vehicle accessory may also include a display source for generating vehicle information which is positioned in the housing to utilize the reflective element to also reflect an image from the display source to a driver of the vehicle.

Claims

1. A rearview mirror assembly for a vehicle, comprising:

a housing;

a rearview mirror supported by said housing;

means for sensing light supported by said housing; and

a reflective element supported on said housing, wherein said reflective element is supported on said housing at a position adjacent said means for sensing light such that light incident upon said reflective element is reflected to said light sensing means.

2. A rearview mirror assembly as defined in claim 1, further including a display source supported by said housing, said reflective element positioned on said housing to reflect an image generated by said display source to a driver of said vehicle.

3. A rearview mirror assembly as defined in claim 2, and further including a switch with a highly reflective surface mounted on said reflective element, said highly reflective surface positioned to reflect light to said light sensing means.

4. A rearview mirror assembly as defined in claim 2, wherein said reflective element includes a reflector positioned adjacent said means for sensing light, wherein said reflective element has a reflective surface with a first degree of reflectivity over most of its surface area and said reflector has a second degree of reflectivity, said second degree of reflectivity being greater than said first degree of reflectivity.

5. A rearview mirror assembly as defined in claim 2, further including a circuit board supported within said housing, and wherein said display source and said means for sensing light are mounted on said circuit board.

6. A rearview mirror assembly as defined in claim 5, wherein said display source is supported in said housing substantially orthogonally to said rearview mirror, and said reflective element is at an angle of from about 35 degrees to about 55 degrees with respect to a surface of said display source.

7. A rearview mirror assembly as defined in claim 2, wherein said reflective element includes a black plastic element.

8. A rearview mirror assembly as defined in claim 7, further including a highly reflective applique'"'"' positioned on said black plastic element adjacent said means for sensing light.

9. A rearview mirror assembly as defined in claim 8, wherein said reflective element is supported on said housing below said rearview mirror.

10. A vehicle rearview mirror assembly, comprising:

a rearview mirror housing;

a rearview mirror supported on said rearview mirror housing;

means for adjusting the amount of light reflected by said mirror to a driver of said vehicle;

means for sensing an ambient light level supported on said housing, said means for sensing generating an output signal, wherein said means for adjusting the light reflected from said mirror to said driver is coupled to said sensing means and is responsive to said output signal of said sensing means; and

reflecting means supported by said housing to reflect light to said sensing means which responds thereto for generating said output signal.

11. A rearview mirror as defined in claim 10 and further including a display source supported on said rearview mirror housing for generating an image of vehicle information for display to a vehicle operator, and wherein said reflecting means is supported on said housing to reflect said image generated by said display source such that said image is visible to the vehicle operator.

12. A rearview mirror as defined in claim 11 wherein said reflecting means has a greater degree of reflectivity adjacent said photo-sensor than adjacent said display source.

13. A rearview mirror as defined in claim 11 further including a circuit board supported in said rearview mirror housing, said circuit board mounted generally parallel to said mirror.

14. A rearview mirror as defined in claim 13 wherein said display source is supported on said circuit board substantially orthogonally to said mirror.

15. A rearview mirror as defined in claim 14 wherein the reflective surface of said reflecting means and the display source form an angle of approximately forty-five degrees.

16. A rearview mirror as defined in claim 15 wherein said reflecting means includes a highly reflective applique'"'"' positioned on a reflective element.

17. A vehicle accessory, comprising:

an accessory housing defining an interior space and having an opening at one edge thereof;

sensor means supported by said housing within said interior space for detecting light and generating an output signal dependent upon said detected light; and

reflecting means mounted on said housing adjacent said opening to reflect light from outside said housing onto said sensor means within said housing such that said sensor means generates said output signal dependent upon detected ambient light from outside said housing.

18. A vehicle accessory as defined in claim 17 further including a display source adapted to generate an image of vehicle information, and wherein said reflecting means is positioned adjacent said display source to reflect an image generated by said display source to the driver of the vehicle.

19. A vehicle accessory as defined in claim 18 wherein said reflecting means light has a greater degree of reflectivity adjacent said sensor means than adjacent said display source.

20. A vehicle accessory as defined in claim 17 wherein said reflecting means includes a polished metal applique'"'"'.

21. A vehicle accessory as defined in claim 17 wherein said reflecting means is supported on said housing at an angle of approximately 45°

with respect to a light responsive surface of said sensor means.

22. A vehicle accessory as defined in claim 17 further including a switch supported on said housing, said reflecting means being affixed to said switch.