Patent ID: 8503061
Filing Date: 2013-08-06
Classification: B60R,G02F,Y10T

Abstract:
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.