Abstract: A surveillance television camera includes a base mounted on an installation surface, a rotating disc rotatably mounted on the base, a tilt shaft mounted on the installation disc for holding the surveillance television camera, the tilt shaft and the rotating disc being remotely controlled so as to be rotated, and a protecting cover mounted on the base mounted on the installation surface so as to cover the camera.

Abstract: A visual presenter includes a body including a base and a support column on which an imaging camera is mounted, a stage which is separate from the body and is formed with a placement surface on which a material to be presented is placed, a positioner located on the base, and a positioned member located on the stage so as to be connectable to the positioner so that the placement surface falls within an imaging range of the imaging camera.

Abstract: A video magnifier includes a monitor having a rectangular display screen, a base having a top on which the monitor is mounted, the base further having a right side, a left side, a front and a rear, a plurality of mounting sections formed on the right and left sides and at least one of the front and the rear of the base respectively, a camera holder detachably attached to one of the mounting sections, an imaging camera held on the holder so as to be detachable from the holder and having supporting legs supporting the camera within the camera holder at a predetermined height from a face to be imaged, and an image display control circuit for controlling the monitor so that an image imaged by the imaging camera is displayed on the display screen of the monitor.

Abstract: A mechanical cam type zoom lens device includes a movement position detector detecting movement positions of focus and zoom lenses moved by respective drivers, a reference compensation value calculating unit setting a plurality of zooming positions for a zoom lens when a focus lens is located at a predetermined focusing position and calculating an amount of movement from a predetermined focusing position in a case where the focus lens is adjusted to be in focus when the zoom lens is located at each set zooming position, the calculated amount of movement serving as a reference compensation value, a storage storing data of the reference compensation values, a focusing compensation value calculating unit calculating a focusing compensation value for the focus lens in a case where the zoom lens is located at the movement position, based on the set zooming positions, the reference compensation value read from the storage and the movement position of the zoom lens, and a focusing unit focusing the focus lens based