AUTOMATIC ANTI-GLARE REARVIEW MIRROR SYSTEM

  • US 3,601,614 A
  • Filed: 05/25/1970
  • Issued: 08/24/1971
  • Est. Priority Date: 05/25/1970
  • Status: Expired due to Term
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First Claim
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1. A control circuit for a mirror movable between a first and second position on an automotive vehicle comprising first means for sensing the forward ambient illumination as seen by the driver of the vehicle, second means for sensing illumination on the mirror from the headlights of another vehicle following the first mentioned vehicle, an amplifier including means electrically connecting said first and second means in circuit, an electrical power source connected to said amplifier, an initiating device adapted to initiate movement of the mirror from said first position to said second position upon receiving a signal from said amplifier, when the illumination sensed by said second means bears a predetermined relationship to the illumination sensed by said first means over a range of ambient illumination and following vehicle headlight illumination conditions, sending said signal to said initiating device.

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