| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize accurate positioning by using a sensor whose constitution is inexpensive and simple by driving an optical system by concurrently using closed-loop control to perform control by detecting the position of the driven optical system and feeding it back and open-loop control to perform control by giving a driving pulse to a driving means. SOLUTION: For example, in the case of correcting camera shake at the time of photographing, light from a subject, which is made incident on a camera shake detection optical system and passes through an image-formation lens 6, is received by a camera shake detecting sensor 8 so as to detect the camera shake. According to the camera shake amount and the camera shake direction, a lens group 2 for correcting the camera shake is decentered in parallel with the optical axis X1 of a photographing optical system by a camera shake correction lens driving system, whereby the shake of the light is corrected. In such a case, the optical system is driven by concurrently using the close-loop control to perform the control by detecting the position of the driven optical system and feeding it back and the open-loop control to perform the control by giving the specified driving pulse to the driving means.</p> |
