Modular variable reflectance mirror assembly

  • US 5,659,423 A
  • Filed: 09/30/1994
  • Issued: 08/19/1997
  • Est. Priority Date: 09/30/1994
  • Status: Expired due to Fees
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First Claim
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1. An automatic rearview mirror system for a vehicle, comprising:

  • a variable reflectance device having a reflectance surface which reflects light incident said surface from a direction rearward of the vehicle, said variable reflectance device having a variable light transmission layer which responds to a drive signal from a control by dimming to a partial light transmission condition;

    said control including first and second light sensors and a circuit which is responsive to electrical characteristics of said light sensors to produce said drive signal as a function of levels of light to which said light sensors are exposed; and

    said first and second light sensors aimed generally in a direction rearwardly of the vehicle, said first light sensor aimed along a generally horizontal axis and said second light sensor aimed along another axis that deviates from said horizontal axis, wherein said another axis deviates from said horizontal axis by at least approximately 10 degrees and not more than approximately 70 degrees.

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