Patent Number: 7,042,616

Title: Electrochromic rearview mirror assembly incorporating a display/signal light

Abstract: According to one embodiment of the present invention, an electrochromic rearview mirror assembly for a vehicle includes an electrochromic mirror having a variable reflectivity, a glare sensor for sensing levels of light directed towards the front element from the rear of the vehicle, an ambient sensor for sensing levels of ambient light, a display positioned behind the partially transmissive, partially reflective portion of the reflector for displaying information therethrough; and a control circuit coupled to the sensors and the display. The control circuit determines whether daytime or nighttime conditions are present as a function of the ambient light level sensed by the ambient sensor. During daytime conditions, the control circuit responds to light levels sensed by the glare sensor to control a contrast ratio of light originating from the display and light reflecting from the partially transmissive, partially reflective area of the reflector.

Inventors: Tonar; William L. (Holland, MI), Forgette; Jeffrey A. (Jenison, MI), Anderson; John S. (Holland, MI), Cammenga; David J. (Zeeland, MI), Turnbull; Robert R. (Holland, MI), Hall; Philip B. (Hudsonville, MI), Bugno; Mark D. (Stevensville, MI), Watson; Alan R. (Buchanan, MI)

Assignee: Gentex Corporation

International Classification: G02F 1/15 (20060101)

Expiration Date: 5/09/02018