| 摘要 |
PROBLEM TO BE SOLVED: To provide a moving mechanism for an optical device which supports two members for holding an optical member movably along the same virtual axis, without backlash and which realizes miniaturization. SOLUTION: The 1st front bearing part 307A3 and the 1st rear bearing part 307A5 of a 1st lens frame 307A are coupled respectively movably with a 1st guide shaft 311 at two spots leaving a space in between in the extending direction of the shaft 311. A 2nd bearing part 307A6 is coupled movably with a 2nd guide shaft 312. A 3rd front bearing part 308A3 and a 3rd rear bearing part 308A5 of a 2nd lens frame 308A are respectively coupled movably with the shaft 312 at two spots, leaving a space in between in the extended direction of the shaft 312. A 4th bearing part 308A6 is movably coupled with the shaft 311.
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