Patent attributes
An electrochromic mirror reflective element suitable for use in an exterior rearview mirror assembly of a vehicle includes a front substrate and a rear substrate and an electrochromic medium disposed therebetween. A principal planar reflector portion has a principal mirror reflector disposed at the rear substrate and an auxiliary wide angle curved portion has an auxiliary mirror reflector coated at a curved recess established at a region of a second surface of the front substrate or a third surface of the rear substrate by at least one of grinding and ablating. The curved recess has a cross-dimension size that is in the range from about 30 millimeters to about 80 millimeters, and has a radius of curvature that is in the range from about 200 millimeters to about 1,000 millimeters, and has a maximum recess depth that is in the range from about 0.11 millimeters to about 4.04 millimeters.
