| 摘要 |
PROBLEM TO BE SOLVED: To provide a body tube device which can be downsized as a whole without increasing its outer diameter when two or more optical part holding frames are used, where the rolling body units and the first guiding grooves of adjacent optical part holding frames are received alternately, and which yields a desired image by making the adjacent optical part holding frames more approximate to each other, and to provide an imaging device. SOLUTION: The lens body tube device 1 is equipped with: two or more lens moving parts 3A, 3B and 3C having two or more first guiding grooves at which lenses 21A, 21B and 21C are held and that are extended in the optical axis direction of the lenses 21A to 21C and arranged in parallel to each other; a body tube 2 having two or more second guiding grooves facing the two or more first guiding grooves; the two or more rolling body units rollably interposed between the first guiding grooves and the second guiding grooves and supporting the lens holding frames to freely slide at two or more spots. Between the adjacent lens holding frames of the two or more lens moving parts 3A to 3C, the positions of the two or more first guiding grooves, the two or more second guiding grooves and the two or more rolling body units interposed between the guiding grooves are displaced from each other in the circumferential direction of the lens so that they are alternately received between each other. COPYRIGHT: (C)2007,JPO&INPIT
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