| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic lens driving device having a triaxial closed loop feedback control unit.SOLUTION: A focusing operation on a Z-axis direction is performed by supplying current by the coupling of two contacts in a hall element 16 having six contacts to an autofocus unit. The four remaining contacts are coupled to a control unit 15 via electric coupling structure 18. The control unit 15 acquires a position on an X-Y axis direction to an optical vibration-proof unit 14 of the autofocus unit by detecting a signal from the optical vibration-proof unit 14, generates a control signal, and transmits the control signal to the hall element 16. The hall element 16 can receive the control signal from the control unit 15, control a current to be supplied to the autofocus unit on the basis of the control signal, and perform triaxial closed loop feedback control of an electromagnetic drive unit 13 besides having a feedback control function of a Z-axis position. |
