A rearview mirror system for a vehicle having an electrochromic reflective element and heating means for uniformly heating substantially the entire reflectance surface in order to promote uniform coloration of the reflectance surface to a desired reflectance level. The reflective element is illustrated...http://www.google.de/patents/US5446576?utm_source=gb-gplus-sharePatent US5446576 - Electrochromic mirror for vehicles with illumination and heating control
