Teardrop shaped vehicular mirror

Abstract

A vehicle mirror assembly having a housing and dome-type mirror lens. The lens has a first base footprint portion with a constant radius of curvature and a diameter, and a second base footprint portion comprised of an elliptical portion with a base major axis and a base minor axis. The mirror lens includes a first surface portion having a first surface radius and conforming to the first base footprint portion. The lens additionally includes a second surface portion conforming to the second base footprint portion. The second surface portion is comprised of a second surface major radius of curvature corresponding to a major surface axis and a second surface minor radius of curvature corresponding to a minor surface axis.

1 . A teardrop-shaped domed cross-view mirror for a vehicle comprising:
 a base member; and   a convex dome-shaped lens member positioned on said base member;   said lens member having a planar perimetral edge comprising a circular portion and an elliptical portion;   said lens member having a half spherical convex portion and a half oval convex ellipsoidal portion merged smoothly together forming the dome shape.   
   
   
       2 . The teardrop-shaped domed cross-view mirror according to  claim 1  wherein said half oval convex ellipsoidal portion has a major axis radius of curvature and a minor axis radius of curvature. 
   
   
       3 . The teardrop-shaped domed cross-view mirror according to  claim 2  wherein said major axis radius of curvature has a varying radius of curvature which decreases from the intersection with the minor axis radius of curvature to the outer planar perimetral edge.