| 摘要 |
A lens driving device for driving a lens for use in adjusting a focus according to a distance therefrom to an object by a pulse motor, comprising; a lens driving section for driving the lens by the pulse motor, a distance measuring section for measuring the distance to the object and generating a distance information for focusing, and a generator for generating a pulse signal for driving the pulse motor, setting a pulse width of the pulse signal to a broad width at starting the pulse motor, changing the pulse width to a narrow width after starting, temporarily interrupting the generation of the pulse signal just before the lens reaches a predetermined stop position determined on the basis of the distance information for focusing generated by the distance measuring section and changing the pulse width to a broad width till the lens reaches the predetermined stop position.
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