| 摘要 |
PURPOSE:To attain size reduction and to improve a response speed by storing constituent components including a lens driving mechanism constituted so as to move and control a focus lens directly in the directions of the optical axis in a lens main body. CONSTITUTION:This device is equipped with a linear motor which is stored in the lens main body 33 and has an electromagnet 36 and a permanent magnet 35 so that one is provided movably to and away from the other in the optical axis directions (A-B directions), the focus lens supported by the former between the electromagnet 36 and permanent magnet 35, and the lens driving mechanism which has a driving means for moving and controlling the focus lens 32 in the AB directions by driving and controlling the linear motor. Then this lens driving mechanism is controlled according to the input image information of an image pickup element 37 provided to the lens main body 33. Consequently, constituent components such as a speed reduction mechanism, etc., are reduced to reduce the size and weight, and the operation is speeded up to improve the response speed. |
