一种高性能液晶透镜的设计方法

Wenbin, 冯文斌 Feng; Zhiqiang, 刘志强 Liu; Lühan, 徐律涵 Xu; Huihai, 李慧海 Li; Mao, 叶茂 Ye

doi:10.3788/aos221137

光学学报

2023

DOI: 10.3788/aos221137

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一种高性能液晶透镜的设计方法

冯文斌 Feng Wenbin¹,

刘志强 Liu Zhiqiang²,

徐律涵 Xu Lühan³

et al.

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Cited by 8 publications

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Time-division achromatic imaging method for a liquid crystal lens

Wang,

Liu,

Feng

et al. 2024

Appl. Opt.

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We demonstrate a feasible time-division achromatic imaging method to improve image quality. We investigate the dependence of focal length on wavelength, which presents as the chromatic aberration when imaging. Next, by changing the driving voltages, color lights are tuned to have the same focal length and focused on the same point. The image of each light is obtained by digital image processing, and the chromatic aberration corrected image is also obtained. The experiments show this method has indeed improved the image quality, providing, to our knowledge, a new and effective solution for correcting the chromatic aberration of an imaging system using a liquid crystal lens.

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Time-division achromatic imaging method for a liquid crystal lens

Wang,

Liu,

Feng

et al. 2024

Appl. Opt.

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Refractive Fresnel liquid crystal lenses driven by two voltages

Feng,

2023

Opt. Express

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We propose and demonstrate a high-performance refractive Fresnel liquid crystal (LC) lens with a simple electrode design. The interconnected circular electrodes enable the creation of a parabolic voltage distribution within each Fresnel zone using only two driving voltages. By controlling these voltages within the linear response region of LC material, the desired parabolic phase profile can be achieved. We provide a detailed discussion on the electrode structure design methodology and operating principles of the lens. In our experiments, we constructed a four-zone Fresnel LC lens with a total aperture of 8 mm. The results show that the optical power of the lens can be continuously adjusted from −1.30 D to +1.33 D. Throughout the process of electrically tuning the optical power, the phase distribution within each Fresnel zone maintains a parabolic profile. These results demonstrate the high-performance of the proposed Fresnel LC lens.

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无偏振片液晶透镜深度估计

Lai Wenjie,

Liu Zhiqiang,

Sun Tao

et al. 2023

光学学报

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Objective Visionbased depth estimation is an important research direction of computer vision, which is of great significance to threedimensional (3D) reconstruction, semantic segmentation, navigation, etc. The monocular depth estimation scheme has the advantages of low cost and easy installation, which cannot be realized by binocular stereo vision and lidar, and it has received more and more attention in recent years. There is a strong correlation between the outof -

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一种高性能液晶透镜的设计方法

Cited by 8 publications

References 0 publications

Time-division achromatic imaging method for a liquid crystal lens

Time-division achromatic imaging method for a liquid crystal lens

Refractive Fresnel liquid crystal lenses driven by two voltages

无偏振片液晶透镜深度估计

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