3 years ago

A polarisation-independent blue-phase liquid crystal lens array using gradient electrodes

A polarisation-independent blue-phase liquid crystal lens array using gradient electrodes
Hu Dou, Fan Chu, Qiong-Hua Wang, Ya-Li Song, Lei Li, Gui-Peng Li

A polarisation-independent blue-phase liquid crystal lens array using gradient electrodes is proposed. A high dielectric constant layer helps to smoothen out the horizontal electric field and reduce the operating voltage. With gradient electrodes and a planar top electrode, gradient electric fields are generated and lens-like phase profile is obtained. When the applied voltage is changed, the focal length of the lens can be tuned from ∞ to 5.94 mm. Besides, the simulation results show that the lens is insensitive to polarisation while keeping parabolic-like profile.

Publisher URL: http://www.tandfonline.com/doi/full/10.1080/02678292.2017.1376127

DOI: 10.1080/02678292.2017.1376127

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