Circuit/System Description

The Inside Rearview Mirror uses 2 photocell sensors. One sensor is the rear light sensor, located on the face side of the mirror, facing the rear of the vehicle. The rear light sensor is used to determine light conditions present at the mirror face. The other sensor is the front light sensor, located on the backside of the mirror, facing the front of the vehicle. The front light sensor is used to determine the exterior light conditions at the front of the vehicle. With a low exterior light condition detected by the front light sensor and a high light condition from the rear light sensor, the Inside Rearview Mirror will automatically darken the face of the Inside Rearview Mirror and the driver outside rearview mirror. The Inside Rearview Mirror provides a signal circuit and a low reference circuit to the driver mirror face to darken the mirror when needed.