Resolution Improvement of Light Field Imaging via a Nematic Liquid Crystal Microlens with Added Multi-Walled Carbon Nanotubes

Abstract

A relatively simple method to improve the image resolution of light field based on a liquid crystal (LC) microlens doped with multi-walled carbon nanotubes (MWCNTs) was developed and evaluated. As the nanoparticles were doped in LC, its electro-optical features could enhance, leading to a short response time compared to the pure LC microlens. With the maximum use of the proposed LC microlens, a method combining aperiodicity extraction and weighted average algorithm was adopted to realize the high-resolution light field imaging. The aperiodicity extraction method was proposed, which could effectively improve resolution of view angle image. For synthesizing the full resolution image at 0 Vrms and the extracted view angle image of light field imaging at 2.0 Vrms, the final high-resolution light field imaging could be obtained in a short time by weighted average algorithm. In this way, the common problem of low resolution in light field imaging could be solved. This proposed method was in good agreement with our experimental results. And it was also in line with the development of the trend of the smart imaging sensor combining algorithm with hardware.

A Light Field Display Realization with a Nematic Liquid Crystal Microlens Array and a Polymer Dispersed Liquid Crystal Film

“…The first group adopted the regular glass type MLA without LC-MLA (glass MLA-type 150-5C from Thorlabs Co). The second group adopted LC-MLA without depolarization algorithm (the applied voltage at 2 V rms ) [33]. The third group adopted LC-MLA with a depolarization algorithm (the lens state is the applied voltage at 2 V rms , the non-lens state is without applied voltage).…”

Snapshot Multispectral Light‐Field Imaging Based on Nematic Liquid‐Crystal Microlens Array via Deep Learning

“…Finally, an aperiodic algorithm extracts sub-views for each single wavelength. [41] The number of sub-views is 24 Â 24. The decoupling process is in detail, as shown in Figure 1d.…”

Cytotoxicity of Carbon Nanotubes, Graphene, Fullerenes, and Dots

“…The diagnostic method, bioimaging, is connected with the penetration of drugs and diagnostic agents into tissues and cells and the sensitivity of detection. Bioimaging is controlled by biodegradability, biocompatibility, specificity, and applicability for carbon nanotubes [68][69][70][71][72][73][74][75][76][77][78][79][80][81], graphene [82][83][84][85][86][87][88][89][90][91][92][93][94], fullerenes [95], and dots [96].…”