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

doi:10.1109/TMAG.2008.2006564

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

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

69 Citations (Scopus)

Abstract

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.

Original language	English
Article number	4773532
Pages (from-to)	155-159
Number of pages	5
Journal	IEEE Transactions on Magnetics
Volume	45
Issue number	1
DOIs	https://doi.org/10.1109/TMAG.2008.2006564
Publication status	Published - 2009 Jan

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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abstract = "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.",

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AU - Horng, Ji Bin

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

Abstract

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