Design and characterization of miniature auto-focusing voice coil motor actuator for cell phone camera applications

Chien Sheng Liu, Psang Dain Lin, Po Heng Lin, Shun Sheng Ke, Yu Hsiu Chang, Ji Bin Horng

研究成果: Article同行評審

70 引文 斯高帕斯(Scopus)

摘要

When designing an auto-focusing actuator for use in cell phone cameras, it is essential to minimize the device size, maximize the positioning repeatability, and minimize the power consumption. In a previous study, we presented a miniature auto-focusing voice coil motor (VCM) actuator for cell phone camera applications in which the lens was precisely positioned by a closed-loop feedback signal generated by a Hall element. Our study characterizes the performance of this device by using an experimental approach. The results show that the proposed actuator is not only smaller than a conventional VCM actuator with an open-loop positioning system, but also has improved positioning repeatability, a more rapid response, and lower power consumption.

原文English
文章編號4773532
頁(從 - 到)155-159
頁數5
期刊IEEE Transactions on Magnetics
45
發行號1
DOIs
出版狀態Published - 2009 一月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 電氣與電子工程

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