An electrical connection substrate includes a substrate main body in which an electrical connection through port is formed, and connection target members arranged on both sides of the substrate main body, respectively. Penetration member penetrates board face A having a first wiring circuit and face B with a second one, transmitting heat from face A to B. With camera centers angled about roll axis, horizontalvertical lines in environment appear angled with respect to horizon, enabling accurate distance calculations. The variable slope is selected in response to the sensed circuit supply voltage.