Liquid Crystal Microlens Arrays Based on Aluminum-Doped Zinc Oxide Oriented Microstructure Facilitate Light Field Image Resolution Enhancement

IF 4.3 2区综合性期刊 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Journal Pub Date : 2025-01-09 DOI:10.1109/JSEN.2024.3524657

Chuan Qiao;Hui Li;Zikang Li;Yuntao Wu

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引用次数: 0

Abstract

In conventional liquid crystal microlens array (LC-MLA), the discontinuous and nonuniform alignment of liquid crystal (LC) presents a significant challenge. We address this issue by introducing an innovative orientation microstructure that employs aluminum-doped zinc oxide (AZO). This approach could ensure stable and continuous alignment in LC-MLA. We reconstruct high-definition images from acquired light field images with enhanced contrast and signal-to-noise ratio (SNR) by applying the total variation (TV) denoising algorithm and convex optimization theory. The proposed AZO-based alignment method exhibits high-performance properties in the orientation of LC molecules. Experimental results reveal that the AZO microstructure induces a stable and continuous alignment of LC molecules, reconstructing an image with a peak SNR (PSNR) of approximately 34 dB and a structural similarity index (SSIM) of about 0.912. Compared to conventional LC-MLA, our method achieves superior light field images and substantially enhances the resolution of light field images.

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来源期刊

IEEE Sensors Journal 工程技术-工程：电子与电气

CiteScore

7.70

自引率

14.00%

发文量

2058

审稿时长

5.2 months

期刊介绍： The fields of interest of the IEEE Sensors Journal are the theory, design , fabrication, manufacturing and applications of devices for sensing and transducing physical, chemical and biological phenomena, with emphasis on the electronics and physics aspect of sensors and integrated sensors-actuators. IEEE Sensors Journal deals with the following: -Sensor Phenomenology, Modelling, and Evaluation -Sensor Materials, Processing, and Fabrication -Chemical and Gas Sensors -Microfluidics and Biosensors -Optical Sensors -Physical Sensors: Temperature, Mechanical, Magnetic, and others -Acoustic and Ultrasonic Sensors -Sensor Packaging -Sensor Networks -Sensor Applications -Sensor Systems: Signals, Processing, and Interfaces -Actuators and Sensor Power Systems -Sensor Signal Processing for high precision and stability (amplification, filtering, linearization, modulation/demodulation) and under harsh conditions (EMC, radiation, humidity, temperature); energy consumption/harvesting -Sensor Data Processing (soft computing with sensor data, e.g., pattern recognition, machine learning, evolutionary computation; sensor data fusion, processing of wave e.g., electromagnetic and acoustic; and non-wave, e.g., chemical, gravity, particle, thermal, radiative and non-radiative sensor data, detection, estimation and classification based on sensor data) -Sensors in Industrial Practice