Title:
LENS DRIVING UNIT
Document Type and Number:
Japanese Patent JP3892289
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a small-sized, lightweight lens driving unit.
SOLUTION: The lens driving unit is equipped with a front lens 2, a front support frame 3 which supports the front lens 2, a front coil 4 which is fitted behind the front support frame 3, a front metal piece 5 which is fitted behind the front support frame 3 and onto the inner circumferential surface of the front coil 4, a rear lens 6, a rear support frame 7 which supports the rear lens 6, a rear coil 8 which is fitted behind the rear support frame 7, a rear metal piece 9 which is fitted behind the rear support frame 7 and on the outer circumferential surface of the rear coil 8, a magnet 10, and a yoke 11; and the front coil 4 is arranged in the external gap between the magnet 10 and yoke 11 and the rear coil 8 is arranged in the internal gap between the magnetic 10 and yoke 11. A current is applied to the front coil 4 to move the front lens 2 forward and applied to the rear coil 8 to move the rear lens 6 forward.
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Inventors:
Manabu Shiraki
Yoshie Morimasa
Yoshie Morimasa
Application Number:
JP2001385278A
Publication Date:
March 14, 2007
Filing Date:
November 13, 2001
Export Citation:
Assignee:
Development Bank of Japan
International Classes:
G02B7/04; G02B7/08; (IPC1-7): G02B7/04; G02B7/08
Domestic Patent References:
| JP4293005A | ||||
| JP60140549A | ||||
| JP10198969A | ||||
| JP8095143A | ||||
| JP52139312A | ||||
| JP57195339A | ||||
| JP3198229A | ||||
| JP5189781A | ||||
| JP56035890U |
Attorney, Agent or Firm:
Soichiro Sano