EXTERIOR REARVIEW MIRROR ASSEMBLY

摘要

An exterior rearview mirror assembly suitable for a vehicle includes an attachment portion and a casing portion having a variable reflectance mirror reflective element. A mirror reflector is disposed at at least a portion of a surface of a rear substrate of the reflective element. The mirror reflector includes a stack of thin films having at least a first metal thin film and a second metal thin film. The first metal thin film is formed of a metal material that has a specific resistivity of less than about 1×10−3 ohm·cm and the second metal thin film is formed of a metal material that has a specific resistivity of less than about 1×10−3 ohm·cm. No part of the rear substrate extends beyond any part of a front substrate of the reflective element. An indicator is disposed rearward of the reflective element and, when actuated, illuminates through the reflective element.

主权项

1. An exterior rearview mirror assembly suitable for use for a vehicle, said exterior rearview mirror assembly comprising:
a casing portion; wherein said casing portion comprises a variable reflectance mirror reflective element; an attachment portion; wherein said attachment portion is configured for attaching at a side of a vehicle; wherein said mirror reflective element comprises a front substrate and a rear substrate and an electrochromic medium disposed between said front and rear substrates; wherein said front substrate has a first surface and a second surface and wherein a transparent electrically conductive layer is disposed at said second surface of said front substrate; wherein said rear substrate has a third surface and a fourth surface and wherein a mirror reflector is disposed at at least a portion of a surface of said rear substrate; wherein said mirror reflector comprises a stack of thin films and wherein said stack of thin films comprises at least a first metal thin film and a second metal thin film; wherein said first metal thin film is formed of a metal material that has a specific resistivity of less than about 1×10−3 ohm·cm; wherein said second metal thin film is formed of a metal material that has a specific resistivity of less than about 1×10−3 ohm·cm; wherein said electrochromic medium is disposed in an interpane cavity between said third surface of said rear substrate and said second surface of said front substrate and is bounded by a perimeter seal; wherein no part of said rear substrate extends beyond any part of said front substrate; wherein a perimeter layer is disposed at said second surface of said front substrate proximate a perimeter edge of said front substrate, and wherein said perimeter layer comprises a reflective perimeter layer; wherein said perimeter layer comprises at least one metal thin film and wherein said perimeter layer is electrically conductive; wherein said perimeter layer generally conceals said perimeter seal from view by a driver of the vehicle normally viewing said front substrate when said exterior rearview mirror assembly is mounted at the vehicle; wherein said exterior rearview mirror assembly comprises a light source; wherein said light source comprises a light source of an indicator; wherein said light source comprises at least one light emitting diode that passes less than about 75 milliamps forward current when powered; and wherein said indicator is disposed rearward of said mirror reflective element and, when actuated, illuminates through said mirror reflective element.