| 摘要 |
PROBLEM TO BE SOLVED: To obtain a lens driving mechanism correcting the reference position of a fine adjustment optical means. SOLUTION: This mechanism provided with a lens group 22 finely moving so as to detect a focusing state, a stepping motor 26 driving the lens group 22, a photosensor 27 detecting the reference position of the lens group 22 and a control circuit 28 controlling the stepping motor 26; and the control circuit 28 controls the stepping motor 26 based on the origin signal of a disk cam 25 detected by the photosensor 27 while finely moving the lens group 22. |
