Automatic anti-glare rearview mirror system
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United States of America Patent
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-
Jun 16, 1998
Grant Date -
N/A
app pub date -
Nov 7, 1995
filing date -
Nov 9, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic anti-glare rearview mirror system includes an anti-glare rearview mirror, a rearview mirror drive circuit, a backward light level sensing device, an ambient light level sensing device, a backward and ambient light level comparison circuit, and an enforced DAY level control device or an enforced DAY level setting device for controlling an anti-glare mode of the mirror according to the ambient light level. The enforced DAY level control device varies the ambient light level to operated an enforced DAY generation circuit by informations from a clock circuit other than a photo-sensor, any time operable switches and variable controller or a light switch ON of an automobile of itself. The high accurate automatic anti-glare mode which has not been taught by conventional prior arts is achieved to be adequate for an actual using condition so as to overcome the disadvantage that the rearview mirror becomes the anti-glare mode at the gray place such as a tree shade in a day time and the backward being not bright, to the contrary, to enable the rearview mirror to become the anti-glare mode adequately at a comparative bright place such as a shopping arcade in a night time.
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