Method of forming a mirrored bent cut glass shape for vehicular exterior rearview mirror assembly

  • US 8,164,817 B2
  • Filed: 10/22/2010
  • Issued: 04/24/2012
  • Est. Priority Date: 05/05/1994
  • Status: Expired due to Fees
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First Claim
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1. A method of forming a mirrored bent cut glass shape suitable for use in an exterior rearview mirror assembly of a vehicle, said method comprising:

  • providing a flat sheet of glass of area greater than the area of a bent cut glass shape that is to be formed from said flat sheet of glass;

    bending said flat sheet of glass to establish a curved sheet of glass;

    determining a surface profile of said curved sheet of glass by a machine vision system;

    providing a computer numerical controlled cutting tool having a cutting wheel that is controlled via digital computer control;

    positioning said cutting tool at said curved sheet of glass;

    maintaining said cutting wheel at or close to 90 degrees to the tangential plane of said curved sheet of glass;

    controlling at least one of (a) said cutting wheel and (b) said curved sheet of glass in three dimensions to cut a bent cut glass shape from said curved sheet of glass;

    wherein controlling at least one of (a) said cutting wheel and (b) said curved sheet of glass to cut said bent cut glass shape is, at least in part, responsive to the surface profile of said curved sheet of glass as determined by said machine vision system; and

    establishing a mirror reflector at a surface of said bent cut glass shape to form a mirrored bent cut glass shape.

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