一种方形孔径液晶透镜的电极结构

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中图分类号： O435.1;O753+.2 文献标识码：A doi：10.37188/CJLCD.2025-0065 CSTR：32172.14.CJLCD.2025-0065

Abstract： To generate an electric field distribution that perfectly matches a parabola and enable a more ideal phase distribution in the liquid crystal （LC） lens，an electrode structure was designed.First，the electrode structure was designed based on the resistance law and Ohm’s law. The influence of the electrode line length on the LC lens was discussed.Electric field simulations of the electrode structure were conducted，and four groups of LC lenses with different electrode line lengths and a 50μm -thick LC layer were fabricated. Next，the wavefront paterns and oblique fringes of the LC lenses were acquired using the polarization interference method.One-dimensional phase information of the wavefront patterns was collected，and the spherical aberration was calculated from the oblique fringes.The variation of the lens power with the electric field was also determined. Finally，the response time of the lens was measured，and imaging experiments were performed on the lens.The experimental results show that： the acquired lens phase information fits the parabola with a degree of fit greater than 99.5% ，which can better achieve the parabolic phase distribution required for liquid crystal lenses.Within the power range of -3.74 D to +3.86D ，the spherical aberration of the LC lens is less than 0.05λ ，demonstrating a good lensing effect.

Key words：optical devices; liquid crystal lens；electrode structure; generating electrode

1引言

液晶材料凭借其独特的物理化学特性，在可穿戴传感器、农药检测、细胞生长分化等多个方向有着广泛的应用前景[1-3]。（剩余10786字）