Abstract: A lens device is provided that outputs an action state of a lens while utilizing a multi-purpose communication interface capable of connecting a large number of camera devices. The lens device includes: a lens mechanism that is built into a lens main body and forms the optical image; a drive control unit that is built into the lens main body and drive-controls the lens mechanism; a control unit that includes a microcomputer and outputs a drive control signal to the drive control unit; a first connection unit that forms a first communication interface capable of having input/output communication with the control unit, and is capable of connecting to a network; and a second connection unit that includes a second communication interface capable of outputting a signal from the control unit.

Abstract: A lens device with which a network can be pulled out from a lens main body and connected to an operation terminal is provided. The lens device for capturing an optical image includes: a lens mechanism for forming the optical image, the lens mechanism being built into a lens main body; a drive control unit for drive-controlling the lens mechanism, the drive control unit being built into the lens main body; a central processing unit that outputs a drive control signal to the drive control unit; and a network that forms a power supply interface for the lens main body, and a communication interface for the central processing unit. Thereby, the lens and the operation terminal are connected via the network, so that it is possible to expand the connection mode between the lens and the operation terminal to an n-to-one or n-to-n connection mode.