Patent ID: 8643931

Claim:
An exterior rearview mirror element comprising: a front element having a first front surface and a second rear surface, wherein a cross-section of the second rear surface defines a first line; a rear element having a third front surface and a fourth rear surface; electrochromic material located between the front element and the rear element; a spotter optic in the second rear surface of the front element, wherein a cross-section of the spotter optic defines a second line; a transition region disposed between the spotter optic and the second rear surface of the front element, wherein a distance from a surface of the transition region to an intersection of the first line and the second line is between about 0.001 mm and 0.034 mm; at least a portion of the spotter optic having a first radius of curvature and at least a portion of the first front surface having a second radius of curvature, the first radius of curvature being smaller than the second radius of curvature; a spectral filter material surrounding at least one-quarter of the periphery of the spotter optic, wherein the average distance from an outside edge of the spectral filter material to an outside edge of the spotter optic varies by no more than 50 percent.