Abstract: An input device enables a user to operate an electronic apparatus in an optimum position for the user. For this purpose, the input device of the present invention includes: a display unit in which images are displayed; an input detection unit that is disposed to be movable back and forth in front of the display unit and optically detects an operation position indicated for an operation screen displayed in the display unit; a control unit that outputs a control signal corresponding to the detected operation position; and an electric driving unit that moves the input detection unit back and forth. By changing the position of the input detection unit to an operation position suitable to a driver, the driver can operate the electronic apparatus in an optimum position for the driver.