Patent ID: 11858422
Assignee: MAGNA MIRRORS OF AMERICA, INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 19:
20. A vehicular exterior rearview mirror assembly, the vehicular exterior rearview mirror assembly comprising:
a mounting structure configured for mounting at an exterior portion of a vehicle equipped with the vehicular exterior rearview mirror assembly;
a mirror head mounted at the mounting structure;
an electro-optic reflective element attached at an attachment element, wherein the attachment element attaches at an electrically powered actuator that is accommodated by the mirror head;
wherein the electro-optic reflective element comprises a front glass substrate and a rear glass substrate and an electro-optic medium sandwiched therebetween and bounded by a perimeter seal;
wherein the front glass substrate has a first surface and a second surface and a first perimeter edge spanning between the first surface and the second surface, the first surface being closer than the second surface to a driver of the equipped vehicle when the mounting structure of the vehicular exterior rearview mirror assembly is mounted at the exterior portion of the equipped vehicle that is being driven by the driver;
a transparent electrically conductive coating disposed at the second surface of the front glass substrate and contacting the electro-optic medium;
wherein the rear glass substrate has a third surface and a fourth surface and a second perimeter edge spanning between the third and fourth surfaces, the third surface being closer to the front glass substrate than the fourth surface;
an electrically conductive coating disposed at the third surface of the rear glass substrate and contacting the electro-optic medium;
wherein the front glass substrate has a first thickness spanning between the first surface and the second surface, and wherein the first thickness of the front glass substrate is less than 2.3 mm;
wherein the rear glass substrate has a second thickness spanning between the third surface and the fourth surface, and wherein the second thickness of the rear glass substrate is less than or equal to 1.6 mm;
wherein the first thickness of the front glass substrate and the second thickness of the rear glass substrate combine to have an overall thickness of at least 2.5 mm;
wherein the first and second perimeter edges combine to provide a curved transition from the first surface of the front glass substrate and an outer surface of the mirror head, and wherein the curved transition has a radius of curvature of at least 2.5 mm;
wherein the first and second perimeter edges provide a consistent curved transition from the first surface of the front glass substrate and the outer surface of the mirror head;
a first electrical connector disposed at the electro-optic reflective element and in electrically conductive continuity with the transparent electrically conductive coating at the second surface of the front glass substrate;
a second electrical connector disposed at the electro-optic reflective element and in electrically conductive continuity with the electrically conductive coating at the third surface of the rear glass substrate;
wherein the fourth surface of the rear glass substrate is adhesively attached at a heater pad that is adhesively attached at an attaching surface of the attachment element;
wherein the mirror head includes a protruding portion that is at least partially received at a notched region of the rear glass substrate, and wherein an outer surface of the protruding portion of the mirror head corresponds with the second perimeter edge of the rear glass substrate at the notched region of the rear glass substrate; and
wherein the outer surface of the protruding portion provides the curved transition from the outer surface of the mirror head toward the first surface of the front glass substrate.