| 摘要 |
PURPOSE:To obtain the titled device low in resonance sharpness, capable of suppressing the rolling phenomenon of a driven part and excellent in frequency response by forming an elastic member by plural line materials. CONSTITUTION:The line pencil 30, which is an elastic member, is formed by twisting plural phosphor bronze lines 32 of about 0.05mmphi together and a liquid 34 of a viscoelastic body is impregnated to a twisting line spring 30. By fixing tightly one edge of the twisting line spring 30 to the moving member, is the driven member and fixing tightly other edge to the base which is a fixed subject, the driven body is supported. Thus, the optical type driving device can be obtained which is small in the resonance sharpness of the primary resonance value, can suppress the rolling phenomenon of a moving member and is satisfactory in the frequency response.
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