A control apparatus controlling a state of an imaging apparatus and a method for controlling an imaging device. Control of the primary regulator valve and control of the lockup control valve are performed with a single linear solenoid valve. Release of a latch plate can only occur upon the simultaneous movement of both of the oppositely biased latching mechanisms toward one another by application of manual force and thus release of the latch plate cannot occur by inertial forces that may be encountered in a vehicular accident. The GRIN lens receives the transported optical pulses from the transmission optical fiber.