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Design of VCM actuator for optical zooming smartphone cameras

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Abstract

The function of optical zooming is really rare in smartphone cameras due to its appearances and dimensions now. The manufactures need to provide a better optical performance and make a new gimmick to attract consumers. As a result, a novel VCM actuator with optical zoom for smartphone cameras is proposed in this paper, it has a simpler structure when compared to stepping motor smartphone cameras. The paper presents a segmented magnetic equivalent circuit method to analyze the magnetic characteristics of proposed VCM actuator and further verified by a commercial finite element model software. Furthermore, the performance of the proposed optical zoom VCM actuator was verified by constructing a laboratory-built prototype, the experimental results shows that the proposed VCM actuator has good positioning accuracy and good dynamic response.

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Acknowledgements

The authors gratefully acknowledge the financial support provided to this paper by the Ministry of Science and Technology of Taiwan under Grant Nos. MOST 105-2221-E-194-013-MY5.

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Authors and Affiliations

  1. Department of Mechanical Engineering and Advanced Institute of Manufacturing with High-Tech Innovations, National Chung Cheng University, No. 168, University Road, Minhsiung Township, Chiayi County, 62102, Taiwan

    Yu-Hao Chang, Cheng-Chi Hu, Chang-Lin Hsieh & Chien-Sheng Liu

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  1. Yu-Hao Chang
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  2. Cheng-Chi Hu
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  3. Chang-Lin Hsieh
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  4. Chien-Sheng Liu
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Correspondence to Chien-Sheng Liu.

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Chang, YH., Hu, CC., Hsieh, CL. et al. Design of VCM actuator for optical zooming smartphone cameras. Microsyst Technol 25, 277–281 (2019). https://doi.org/10.1007/s00542-018-3962-7

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  • DOI: https://doi.org/10.1007/s00542-018-3962-7

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