Optical apparatus

An apparatus adapted for an optical unit a moving direction of which changes from one of a moving-out direction and a moving-in direction to the other of the moving-out direction and the moving-in direction in process of varying a focal length from one of a shortest focal length end side and a longest length end side to the other of the shortest focal length end side and the longest length end side, said optical unit having possibility of receiving an external force in the moving-in direction, and for a driving device which drives said optical unit, said apparatus comprising:

• a control device which determines whether said optical unit moves in and the moving-in direction to reach a stop position on the basis of a position of said optical unit and a direction of varying focal length, and causes said driving device to move said optical unit in the moving-out direction after moving the optical unit in the moving-in direction beyond the stop position and, then, to stop said optical unit at the stop position when said control device determines that said optical unit moves in the moving-in direction to reach the stop position.

An apparatus adapted for an optical unit which constitutes a front most part of an optical system, a moving direction of said optical unit changing from one of a moving-out direction and a moving-in direction to the other of the moving-out direction and the moving-in direction in process of varying a focal length from one of a shortest focal length end side and a longest length end side, to the other of the shortest focal length end side and the longest length side end, and for a driving device which drives said optical unit, said apparatus comprising:

• a control device which determines whether said optical unit move in the moving-in direction to reach a stop position on the basis of a position of said optical unit and a direction of varying the focal length, and causes said driving device to move said optical unit in the moving-out direction after moving the optical unit in the moving-in direction beyond the stop position and, then, to stop said optical unit at the stop position when said control device determines that said optical unit moves in the moving-in direction to reach the stop position.

An apparatus comprising:

• an optical unit moving direction of which changes from one of a moving-out direction and a moving-in direction to the other of the moving-out direction and the moving-in direction in process of varying a focal length from one of a shortest focal length end side and longest length end side to the other of the shortest focal length end side and the longest length end side;
• and
• a control device which determines whether said optical unit moves in the moving-in direction to reach a stop position on the basis of a position of said optical unit and a direction of varying the focal length, and causes said driving device to move said optical unit in the moving-out direction after moving the optical unit in the moving-in direction beyond the stop position and, then, to stop said optical unit at the stop position when said control device determines that said optical unit moves in the moving-in direction to reach the stop postion.

An apparatus adapted for an optical unit a moving direction of which changes from one of a moving-out direction and a moving-in direction to the other of the moving-out direction and the moving-in direction in process of varying a focal length from one of a shortest focal length end side and a longest length end side to the other of the shortest focal length end side and the longest length end side, and for a driving device which drives said optical unit, said apparatus comprising:

• a control device which determines whether said optical unit moves in the moving-in direction to reach a stop position on the basis of a position of said optical unit and a direction of varying the focal length, and causes said driving device to move said optical unit in the moving-out direction after moving the optical unit in the moving-in direction beyond the stop position and, then, to stop optical unit at the stop position when said control device determines that said optical unit moves in the moving-in direction to reach the stop position.

An apparatus adapted for an optical unit a moving direction of which changes from one moving direction of a moving-out direction and a moving-in direction to the other moving direction of the moving-out direction and the moving-in direction in process of varying a focal length from one of a shortest focal length end side and a longest length end side to the other of the shortest focal length end side and the longest length end side, and for a driving device which drives said optical unit, said apparatus comprising:

• a control device which determines the moving direction in which said optical unit reaches a stop position on the basis of a position of said optical unit and a direction of varying the focal length, and causes said driving device to move said optical unit in same direction to stop at the stop position between the shortest focal length end side and the longest length end side.