| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel capable of shortening the lengths in an optical axis direction and in the radial direction and contributing to miniaturization. SOLUTION: A zoom cam ring 7 is freely rotatably arranged at the outside circumferential part of an inner barrel part 4b and a slide barrel 9 to which voice coil motors 16 and 16' are fitted is arranged at the inside circumferential part of the barrel part 4b so as to be freely moved in the direction of an optical axis L. Besides, relief grooves 4h and 4h' through which the projection parts of the motors 16 and 16' can be passed in the direction of the optical axis L are formed at the inside circumferential part of the barrel part 4b. The ring 7 and the grooves 4h and 4h' are arranged so as to overlap by interposing the barrel part 4b within the range P of the barrel part 4b. Thus, the length of the lens barrel 1 in the radial direction can be also shortened and the length thereof in the direction of the optical axis L can be shortened. |
