| 摘要 |
PROBLEM TO BE SOLVED: To reduce the thickness during non-photographing with a non-movable deflection optical element for bending an optical path for forming a bent optical path. SOLUTION: When performing photographing, a lens holding frame 11 is positioned at the upper end of a main shaft 12 by a nut member 18 driven by the rotation of a lead screw 16 by a pulse motor 17. Further, the lens holding frame 11 is disposed at a prescribed position on an optical axis at an object side of a prism PR with a sub guide pin 11b brought into contact with a sub shaft 14 by energization force of a compression torsion spring 15. When it is stored, the lens holding frame 11 is positioned below the main shaft 12 by the nut member 18 driven by the rotation of the lead screw 16. Further, the lens holding frame 11 is rotated by a retreat cam part 13c of a fixed frame 13 against the energization force of the compression torsion spring 15. The sub guide pin 11b is separated from the sub shaft 14, and the lens holding frame 11 retreats into a retreat space formed at the fixed frame 13. COPYRIGHT: (C)2009,JPO&INPIT
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