| 摘要 |
PROBLEM TO BE SOLVED: To achieve the miniaturization of a lens barrel device by dispensing with a magnetic circuit part provided individually for each of a plurality of lens holding frames thereby preventing an increase in the number of parts. SOLUTION: The lens barrel device is equipped with: a plurality of lens moving parts 3A, 3B and 3C respectively holding lenses 21A, 21B and 21C and having a plurality of first guiding grooves extended in the optical axis direction of the lenses 21A to 21C and made parallel with each other; a plurality of coils 23A, 23B and 23C respectively stuck on the plurality of lens moving parts 3A to 3C; magnetic circuit parts 4A, 4B and 4C piercing through the plurality of coils 23A to 23C and forming a magnetic closed circuit; a lens barrel 2 housing the plurality of lens moving parts 3A to 3C and having second guiding grooves extended in the optical axis direction, made parallel with each other and opposed to the first guiding grooves; and a plurality of rolling body units interposed to freely roll between the first and the second guiding grooves. COPYRIGHT: (C)2006,JPO&NCIPI
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