| 摘要 |
PROBLEM TO BE SOLVED: To smoothly and surely move a movable lens in an optical axis direction by overhanging and extending a nut part which is screwed to a screw shaft and moves a movable lens frame by a specified length toward the base end side of an inserting part from the end face of the movable lens frame, so that the straight advancing performance of the movement of the nut part, obtained when the screw shaft is rotated by a control cable, is secured. SOLUTION: A nut part 38 connected to the movable lens frame 36 is screwed and fitted to the screw shaft 40 which is connected to the control cable 41. At this time, an overhanging part is provided in order to being extend the length of this screw fitting part. A housing part 39b, whose diameter is larger than that of an inserting hole 39a, whose length is the same as that of the overhanging part at the part 38 or slightly shorter than the length of the overhanging part is formed on a pivotally supporting member 39 integrally provided to a lens supporting frame 35 so that the part 39b is consecutively set with the hole 39a, where a rotating shaft part 40b is positioned.
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