Exterior mirror reflective element with auxiliary reflector

  • US 10,023,122 B2
  • Filed: 12/31/2017
  • Issued: 07/17/2018
  • Est. Priority Date: 05/23/2007
  • Status: Active Grant
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First Claim
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1. A mirror reflective element suitable for use in an exterior rearview mirror assembly of a vehicle, said mirror reflective element comprising:

  • a glass substrate having a first side and an opposing second side;

    wherein said glass substrate has a thickness between said first side and said second side of less than 3 millimeters;

    wherein said mirror reflective element has a principal reflector portion and an auxiliary reflector portion;

    wherein said auxiliary reflector portion comprises a curved recess established at said second side of said glass substrate;

    wherein said curved recess comprises a radius of curvature less than 1,000 millimeters;

    wherein said curved recess has a recess depth less than 2.26 millimeters;

    an auxiliary mirror metallic reflector coated at said curved recess at said second side of said glass substrate;

    a principal mirror metallic reflector coated at said principal reflector portion;

    wherein said principal mirror metallic reflector coated at said principal reflector portion is disposed at said second side of said glass substrate;

    wherein said auxiliary mirror metallic reflector coated at said curved recess and said principal mirror metallic reflector coated at said principal reflector portion comprise the same material;

    wherein said mirror reflective element comprises a fixed reflectance non-electro-optic mirror reflective element;

    wherein said mirror reflective element is configured so that, when an exterior rearview mirror assembly equipped with said mirror reflective element is normally mounted at a side of a vehicle, said curved recess is disposed at an outboard upper region of said mirror reflective element relative to the side of the equipped vehicle;

    wherein a heater pad is disposed at said second side of said glass substrate;

    wherein said heater pad, when electrically powered, heats both of (i) said curved recess and (ii) said principal reflector portion;

    wherein electrical power for heating said mirror reflective element is provided via at least one electrically conductive trace of said heater pad that generates heat when passing an electrical current;

    wherein said electrical power is applied via at least one electrical connector of said heater pad that is adapted for connection to a wiring harness of an exterior mirror assembly for powering of said heater pad by a power source of a vehicle equipped with the exterior mirror assembly; and

    wherein said heater pad comprises a flexible heater pad.

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