Design of VCM actuator for optical zooming smartphone cameras
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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.
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.
- Chang YH, Lu CJ, Liu CS, Liu DS, Chen SH, Liao TW, Peng WY, Lin CH (2017) Design of miniaturized optical image stabilization and autofocusing camera module for cellphones. Sens Mater 29(7):989–995Google Scholar