| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure a necessary and sufficient mechanical strength in a fixed supporting board for supporting a lens shift device, achieve a reduction in the weight of the entire device, a reduction in cost and an improvement in dimensional accuracy, and preventing unwanted changes in a lens position and a focus position due to thermal expansion and contraction. <P>SOLUTION: A lens shift device includes: a movable supporting board 3 for supporting a lens attachment board 2 to be attached with a lens unit L in a manner displaceable in a horizontal direction Fh; a horizontal movement mechanism 5 for moving the lens attachment board 2 in the horizontal direction Fh; a fixed supporting board 6 for supporting the movable supporting board 3 in a manner displaceable in a vertical direction Fv; and a vertical movement mechanism 4 for moving the movable supporting board 3 in the vertical direction Fv. In particular, the fixed supporting board 6 has an integrally-formed three layered hybrid structure in which a base board 6a made of a plastic material, a heat insulating board 6b formed in a sheet-like shape and made of a heat insulating material, and a reinforcement board 6c made of a heat conductive metal material are successively laminated in the mentioned order from the lens unit L side. <P>COPYRIGHT: (C)2013,JPO&INPIT |
