Patent attributes
A mirror reflective element sub-assembly suitable for use in an exterior rearview mirror assembly of a vehicle includes a mirror reflective element and a mirror back plate. The mirror back plate includes an aperture extending therethrough and includes walls established at a first side of said mirror back plate by the plastic injection molding operation, with the walls at least partially circumscribing the aperture and extending outward from the first side of the mirror back plate. A heater pad is disposed between the rear side of the glass substrate and the second side of the mirror back plate. The heater pad has a light transmitting portion that is generally aligned with the aperture of the mirror back plate and with a light-transmitting portion of the mirror reflector. The walls include walls of a housing accommodating an indicator associated with a blind spot detection system of the vehicle.
