Design of wireless power driving and controlling system for electrically driving liquid crystal micro-lens array

Shouguo Fu; Kan Liu; Xinyu Zhang; An Ji; Changsheng Xie

doi:10.1117/12.901881

8 December 2011 Design of wireless power driving and controlling system for electrically driving liquid crystal micro-lens array

Shouguo Fu, Kan Liu, Xinyu Zhang, An Ji, Changsheng Xie

Author Affiliations +

Proceedings Volume 8002, MIPPR 2011: Multispectral Image Acquisition, Processing, and Analysis; 800203 (2011) https://doi.org/10.1117/12.901881
Event: Seventh International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2011), 2011, Guilin, China

Abstract

A novel wireless power driving and controlling system is proposed, which is based on the electrical driving and controlling characteristic of liquid crystal micro-lens array with tunable focal length. The system consists of two isolated circular copper stacked coils with circular cross section. Both of coils are air-cored. The big one, used to generate electromagnetic field, has the wire diameter of ~1mm, and the coil diameter of ~38mm and the height of 10mm. By contrast, the small one, used to produce electromotive force by induction effect, is ~1mm, ~13mm and ~18mm, respectively. The varying electromotive force is generated in the small coil by the variable intensity of magnetic field resulting from changing the time of current through the big coil. The agreement of experimental results with the theoretical analysis proves that the electromotive force can be continuously changed from 0 to 30Vrms (root mean square), when the duration of current through the big coil is reasonablely selected. It is very important that the clear image can be got and the image quality of liquid crystal micro-lens array can be comparable to that of conventional optical micro-lens array.

Citation Download Citation

Shouguo Fu, Kan Liu, Xinyu Zhang, An Ji, and Changsheng Xie "Design of wireless power driving and controlling system for electrically driving liquid crystal micro-lens array", Proc. SPIE 8002, MIPPR 2011: Multispectral Image Acquisition, Processing, and Analysis, 800203 (8 December 2011); https://doi.org/10.1117/12.901881

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