Acta Optica Sinica, Volume. 42, Issue 7, 0711004(2022)
Liquid Crystal Lens Imaging Method Using 90° Twisted Nematic Liquid Crystal Cell Instead of Polarizer
Figures & Tables(5)
Fig. 1. Three working states of LC lens polarizer-free imaging method using 90° TN cell. (a) 90° TN cell twists at arbitrary angles, and LC lens does not work; (b) 90° TN cell twists at 0°, and LC lens is in-focus; (c) 90° TN cell twists at 90°, and LC lens is in-focus
Fig. 2. Out-of-focus image Ir, in-focus images If0°and If90° of polarizer-free LC lens, and If (dash line A is used for gray value measurement). (a) Out-of-focus image Ir; (b) in-focus image If0° of polarizer-free LC lens; (c) in-focus image If90° of polarizer-free LC lens; (d) If
Fig. 3. Gray values of space lines. (a) Out-of-focus image Ir; (b) in-focus image If0° of polarizer-free LC lens; (c) in-focus image If90° of polarizer-free LC lens; (d) If
Fig. 4. Out-of-focus image Ir, in-focus images If0° and If90° of polarizer-free LC lens, and result image If obtained by proposed method. (a) Out-of-focus image Ir; (b) in-focus image If0° of polarizer-free LC lens; (c) in-focus image If90° of polarizer-free LC lens; (d) result image If obtained by proposed method
Table 1. Noise level
View tableTable 1. Noise level
Image Ir 0.632 If0° 0.634 If90° 0.631 If 1.053 Is(α=0.5) 1.427
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Pengwei Li, Xinci Chen, Xiaoxi Chen, Mao Ye. Liquid Crystal Lens Imaging Method Using 90° Twisted Nematic Liquid Crystal Cell Instead of Polarizer[J]. Acta Optica Sinica, 2022, 42(7): 0711004
Paper Information
Category: Imaging Systems
Received: Sep. 6, 2021
Accepted: Nov. 4, 2021
Published Online: Mar. 28, 2022
The Author Email: Ye Mao (mao_ye@uestc.edu.cn)
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