An automobile external wide-angle rearview mirror, which is integrated with a main zone disposed at an inner side thereof and multiple upper and lower outer zones respectively disposed at an outer sides thereof and border upon the main zone at first and second tangent lines, wherein the main zone is...http://www.google.co.uk/patents/US6398377?utm_source=gb-gplus-sharePatent US6398377 - Automobile external wide-angle rearview mirror
