| 摘要 |
<p>Plate springs and a lens actuator having the plate springs. Each of the upper plate spring (6) and the lower plate spring comprises an inner peripheral ring part (6b), an outer peripheral ring part (6a) formed apart from the inner peripheral ring part (6b), and at least one circular arc-shaped arm parts (6c, 6c, 6c) extending from the inner peripheral ring part (6b) to the outer peripheral ring part (6a). The inner peripheral ring part (6b) and the outer peripheral ring part (6a) are elastically extended/retracted in a normal direction to a plate surface by the circular arc-shaped arm parts (6c, 6c, 6c). Arm inner peripheral support parts (6d, 6d, 6d) supporting the circular arc-shaped arm parts (6c, 6c, 6c), elastically deforming against an external force in a direction orthogonal to the normal direction to the plate surface, and deflecting the circular arc-shaped arm parts (6c, 6c, 6c) in the direction of the external force are formed on at least one of the inner peripheral ring part (6b) and the outer peripheral ring part (6a). Thus, the plate springs capable of developing linear deformation characteristics without changes in the characteristics by falling and the lens actuator having the plate springs can be provided.</p> |
