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30 October 2009 Wide spectrum electrically driven tunable focus adaptive liquid crystal lens
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Proceedings Volume 7494, MIPPR 2009: Multispectral Image Acquisition and Processing; 749406 (2009) https://doi.org/10.1117/12.832345
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China
Abstract
A liquid crystal lens with wide spectrum electrical tunable focal length is proposed. The top substrate coated indium tin oxide film with a hole of 2.0mm diameter is manipulated by techniques mainly consists of conventional ultraviolet lithography and hydrochloric acid etching. The bottom substrate glass coated ITO acts as another electrode. The nonuniform electric field appeared in the LC layer produces a gradient distribution of refractive index. The LC cell shows an optical lens property. The focal length of the LC lens is function of applied voltage, covering approximately 20mm- 480mm. In the focal length range, the LC lens maintains high optical quality. The transmissivity of the LC lens is above 80% from 500nm to 1100nm.
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Hui Li, Kan Liu, Xinyu Zhang, Tianxu Zhang, and Xubang Shen "Wide spectrum electrically driven tunable focus adaptive liquid crystal lens", Proc. SPIE 7494, MIPPR 2009: Multispectral Image Acquisition and Processing, 749406 (30 October 2009); https://doi.org/10.1117/12.832345
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