| 摘要 |
PROBLEM TO BE SOLVED: To provide a camera equipped with a lens barrel which has excellent light shielding property is improved, and also, which is made small-sized. SOLUTION: A guide groove 3122a leading to a cam groove 3122 so as to guide a cam pin 3101 is provided to the rear end part of a rotary cylinder 312. A spring member 301 for forwardly energizing a lens frame 311 for holding a rear group lens is arranged on the base end part of the lens barrel. When being collapsed, the spring is pressed by a front group, then, spring force is charged, on the other hand, when being extended, the lens frame 311 is energized forward by the spring force as a repulsive force, then, the lens frame 311 is pressed toward an introduction port. A cam pin 3113 enters through the introduction port 3122a and engages with the cam groove 3122. COPYRIGHT: (C)2005,JPO&NCIPI
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