Frameless interior rearview mirror assembly

摘要

An interior rearview mirror assembly for a vehicle includes a mirror casing and a prismatic interior reflective element. The reflective element comprises a wedge-shaped glass substrate having a perimeter edge about a periphery of the glass substrate and extending between first and second surfaces thereof. The glass substrate has a mirror reflector established at the second surface. A front surface of the perimeter edge provides a smooth curved transition at the perimeter edge between a perimeter region of the first surface and the mirror casing. The front surface of the perimeter edge is rounded by at least one of grinding and polishing to provide a generally rounded curved surface between the first surface of the glass substrate and the mirror casing. The radius of curvature of the front surface is at least about 2.5 mm. No portion of the mirror casing encompasses the first surface of the glass substrate.

主权项

1. An interior rearview mirror assembly for a vehicle, said interior rearview minor assembly comprising:
a mirror casing; a prismatic interior reflective element; wherein said prismatic interior reflective element comprises a wedge-shaped glass substrate having a first surface and a second surface and a perimeter edge about a periphery of said wedge-shaped glass substrate and extending between the first and second surfaces thereof, said wedge-shaped glass substrate having a mirror reflector established at the second surface thereof, the first surface generally facing a driver of a vehicle when said interior rearview mirror assembly is normally mounted in a vehicle equipped with said interior rearview mirror assembly; wherein a front surface of the perimeter edge provides a smooth curved transition at the perimeter edge between a perimeter region of the first surface of said wedge-shaped glass substrate and said mirror casing; said perimeter region circumscribing said wedge-shaped glass substrate; wherein the front surface of the perimeter edge is rounded by at least one of grinding and polishing to provide a generally rounded curved surface disposed between the first surface of said wedge-shaped glass substrate and said mirror casing; wherein the radius of curvature of the front surface of the perimeter edge is at least about 2.5 mm; and wherein no portion of said mirror casing encompasses the first surface of said wedge-shaped glass substrate.