Automatic rearview mirror system with automatic headlight activation
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United States of America Patent
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Feb 3, 1998
Grant Date -
N/A
app pub date -
Dec 17, 1996
filing date -
Jul 19, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A vehicle automatic rearview mirror system with headlight activation control for establishing a reflectivity level of an electrochromic rearview mirror element and for controlling the activated state of a vehicle's headlights includes two light sensors, an electrochromic mirror element drive circuit that is responsive to light to which the two light sensors are exposed for establishing a partial reflectivity level for the vehicle's electrochromic rearview mirror element, and a headlight activation control that is responsive to light to which the two light sensors are exposed for activating the vehicle's headlights under low light conditions and deactivating the vehicle's headlights under high light conditions. The two light sensors are preferably directionally sensitive and aimed in different directions, one aimed forward of the vehicle and the other aimed rearward of the vehicle. The headlights are preferably activated as a function of the lowest light level to which either of the light sensors is exposed.
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