| 摘要 |
PROBLEM TO BE SOLVED: To realize lightening and miniaturization, obtaining sufficient strength, correctly transmitting drive force and sufficiently displaying control performance. SOLUTION: A lens holder 101 holds a lens 102 in its hollow. The lens holder 101 is supported by thin plate like arms 103, 104, and these thin plate like arms 103, 104 are supported by support beams 107, 108 also. The base parts of the support beams 107, 108 are held to a hold body 109. The support beams 107, 108 allow that the lens holder 101 and arms 103, 104 are movement-controlled in the optical axial direction, in the tracking control direction. The arms 103, 104 are prolonged along the tracking control direction to become a longitudinal direction, and are provided with flat surfaces in the optical axial direction, and are provided with rigidity in the focus drive direction, in the tracking drive direction. |
