Patent ID: 8614846

Claim:
A rearview assembly having a front and comprising: a housing structure defining an inner volume and an aperture; an electrochromic (EC) mirror element, the EC mirror element including a first substrate having a first surface corresponding to the front, a second surface opposite to the first surface, and a rounded edge configured to improve durability of the first substrate, the second surface having a ring of spectral filter material disposed circumferentially around a perimeter of the second surface; a second substrate having third and fourth surfaces and an edge surface, the second substrate being smaller than the first substrate and disposed in a parallel and spaced-apart relationship with respect to the first substrate such that a perimeter of the second substrate is concealed behind the first substrate, the second and third surfaces defining a gap therebetween; and an EC medium in said gap, wherein the EC mirror element is affixed to the housing structure at said aperture; means for alignment of said housing and said EC mirror element; and a circuit board in said inner volume behind the EC mirror element as viewed from the front, said circuit board containing electronic circuitry adapted to control the operation of said rearview assembly.