Exterior mirror element with wide angle portion

  • US 8,267,535 B2
  • Filed: 11/07/2011
  • Issued: 09/18/2012
  • Est. Priority Date: 05/23/2007
  • Status: Expired due to Fees
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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 front surface and a rear surface;

    a principal reflector portion and an auxiliary wide angle curved portion;

    wherein said principal reflector portion comprises a principal mirror reflector established at said rear surface of said glass substrate;

    wherein said auxiliary wide angle curved portion comprises a curved recess established at a region of said rear surface of said glass substrate by at least one of grinding and ablating;

    wherein said auxiliary wide angle curved portion comprises an auxiliary mirror reflector established at said curved recess;

    wherein said curved recess has a cross-dimension size that is in the range from about 30 millimeters to about 80 millimeters;

    wherein said curved recess comprises a radius of curvature that is in the range from about 200 millimeters to about 1,000 millimeters;

    wherein said curved recess has a maximum recess depth that is in the range from about 0.11 millimeters to about 4.04 millimeters;

    wherein said auxiliary wide angle curved portion is inboard of a perimeter edge of said mirror reflective element;

    wherein said principal reflector portion of said mirror reflective element surrounds said auxiliary wide angle curved portion of said mirror reflective element; and

    wherein said curved recess is generally circular-shaped.

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