| 摘要 |
An auto-focus lens module that uses electromagnetic force as well as spring force as driving force to control movement of the lens for auto-focusing consists of a rectangular base, two copper plates, an insulation spacer, four magnets, a lens holder, a lens, a coil, a spring, and a rectangular top cover. The lens holder, the lens and the coil form a lens set. The spring is sleeved outside the coil and is elastically supporting between the outer circular flange and the top cover while the four magnets are respectively located outside the spring, on four corners of the rectangular case. Thus the components of the lens module according to the present invention are simplified, the volume of the device is minimized, and the lens holder moves stably for focusing.
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