Electro-optic rearview mirror assembly for vehicle

  • US 8,503,061 B2
  • Filed: 03/30/2010
  • Issued: 08/06/2013
  • Est. Priority Date: 03/30/2009
  • Status: Active Grant
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First Claim
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1. A reflective element assembly for a vehicular interior rearview mirror assembly, said reflective element assembly comprising:

  • a front substrate having first and second surfaces;

    a transparent conductive coating established at said second surface;

    a rear substrate having third and fourth surfaces;

    a third surface transflective reflector established at said third surface;

    an electro-optic medium disposed between said front and rear substrates;

    a fourth surface mirror reflector established at said fourth surface of said rear substrate, said fourth surface mirror reflector being substantially non-light transmitting except at a window established therethrough;

    wherein said window is established through said fourth surface mirror reflector and is substantially devoid of said fourth surface mirror reflector at a location where a sensor is disposed behind said reflective element and having a field of view through said reflective element and through said window of said fourth surface and through said third surface transflective reflector at said third surface; and

    wherein the portion of said fourth surface mirror reflector at and around said window locally varies in physical thickness, with a minimum physical thickness of said fourth surface mirror reflector being closest to said window and with the physical thickness of said fourth surface mirror reflector generally increasing to a generally maximum physical thickness of said fourth surface mirror reflector at a distance from said window to reduce viewability of said window through said front and rear substrates by a driver normally viewing said reflective element assembly when said vehicular interior rearview mirror assembly is normally mounted in a vehicle equipped with said vehicular interior rearview mirror assembly.

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