Geometrically Shaped Ellipsoid Vehicular Mirror
Cross-view mirrors for buses and other vehicles which provide modified image sizes. The mirror assemblies have lens members created from the shape of a portion of an elliptical or circular toroid volumetric shape with an elliptical or circular cross-sectional shape. A first embodiment has an elliptical toroid volumetric shape with an elliptical cross-sectional shape. A second embodiment has an elliptical toroid volumetric shape with a circular cross-sectional shape. A third embodiment has a circular toroid volumetric shape with an elliptical cross-sectional shape.
1 . A mirror assembly comprising:
a base member; and
a dome lens member attached to said base member;
said dome lens member comprising a major axis tip portion of an ellipsoid;
said ellipsoid having an elliptical toroid-shaped configuration with an elliptical cross section.
2 . A mirror assembly as described in claim 1 wherein said major axis tip portion comprises a dome depth less than one tenth of a major axis length of said ellipsoid.
3 . A mirror assembly as described in claim 1 wherein said ellipsoid includes a minor axis length less than half of a major axis length.
4 . A mirror assembly comprising:
a base member; and
a dome lens member attached to said base member;
said dome lens member comprising a major axis tip portion of an ellipsoid;
said ellipsoid having an elliptical toroid-shaped configuration with a circular cross-section.
5 . A mirror assembly as described in claim 4 wherein said major axis tip portion comprises a dome depth less than one tenth of a major axis length of said ellipsoid.
6 . A mirror assembly as described in claim 4 wherein said ellipsoid includes a minor axis length less than half of a major axis length.
7 . A mirror assembly comprising:
a base member; and
a dome lens member attached to said base member;
said dome lens member comprising a major axis tip portion of an ellipsoid;
said ellipsoid having a circular torus-shaped configuration with an oval-shaped cross-section.
8 . A mirror assembly as described in claim 7 wherein said major axis tip portion comprises a dome depth less than one tenth of a major axis length of said ellipsoid.
9 . A mirror assembly as described in claim 7 wherein said ellipsoid includes a minor axis length less than half of a major axis length.