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...http://www.google.co.uk/patents/US20110013285?utm_source=gb-gplus-sharePatent US20110013285 - EXTERIOR MIRROR ELEMENT WITH WIDE ANGLE PORTION
