| 摘要 |
PURPOSE:To increase a dumping effect without increasing a resonance point more than a required level by supporting an objective lens barrel and an intermediate supporting member by parallel plate springs and thickening only coupling parts between the supporting member and the plate spring and between a fixing member and the plate spring in the thickness of rubber-like elastic bodies for damping the vibration of the plate springs. CONSTITUTION:The lens barrel 10 is set up so as to be displaced from the intermediate supporting member in the right and left direction, i.e. the direction (tracking direction) rectangular to the optical axis direction by a pair of parallel plate springs 12 to be extended in parallel with the optical axis and moved in the tracking direction. The rubber-like elastic bodies 13 for damping the vibration of the springs 12 are adhered to respective parallel plate springs 12 and the shapes of the elastic bodies 13 are constituted so that the thickness of respective adhering parts 13a, 13b to the lens barrel 10 and the supporting member 11 is increased like circular arcs. Consequently, the spring effect of the elastic bodies 13 is suppressed as low as possible and the damping effect to the springs 12 can be effectively displayed. |
