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 | |
| Publication status | Published - 2009 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
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Design and characterization of miniature auto-focusing voice coil motor actuator for cell phone camera applications. / Liu, Chien-Sheng; Lin, Psang-Dain; Lin, Po Heng; Ke, Shun Sheng; Chang, Yu Hsiu; Horng, Ji Bin.
In: IEEE Transactions on Magnetics, Vol. 45, No. 1, 4773532, 01.01.2009, p. 155-159.Research output: Contribution to journal › Article
TY - JOUR
T1 - Design and characterization of miniature auto-focusing voice coil motor actuator for cell phone camera applications
AU - Liu, Chien-Sheng
AU - Lin, Psang-Dain
AU - Lin, Po Heng
AU - Ke, Shun Sheng
AU - Chang, Yu Hsiu
AU - Horng, Ji Bin
PY - 2009/1/1
Y1 - 2009/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=59849107051&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=59849107051&partnerID=8YFLogxK
U2 - 10.1109/TMAG.2008.2006564
DO - 10.1109/TMAG.2008.2006564
M3 - Article
AN - SCOPUS:59849107051
VL - 45
SP - 155
EP - 159
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 1
M1 - 4773532
ER -