True-color and super-resolution imaging using an optical axis shiftable liquid crystal lens

Bo Zhou; Zhiqiang Liu; Xinci Chen; Yalei Zhang; Wenbin Feng; Mao Ye

doi:10.1364/AO.503899

Applied Optics
Vol. 63,
Issue 2,
pp. 415-422
(2024)
•https://doi.org/10.1364/AO.503899

True-color and super-resolution imaging using an optical axis shiftable liquid crystal lens

Bo Zhou, Zhiqiang Liu, Xinci Chen, Yalei Zhang, Wenbin Feng, and Mao Ye

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Bo Zhou, Zhiqiang Liu, Xinci Chen, Yalei Zhang, Wenbin Feng, and Mao Ye, "True-color and super-resolution imaging using an optical axis shiftable liquid crystal lens," Appl. Opt. 63, 415-422 (2024)

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Table of Contents Category
- Imaging Systems, Image Processing, and Displays
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The topics in this list come from the Optics and Photonics Topics applied to this article.

About this Article
History
- Original Manuscript: August 24, 2023
- Revised Manuscript: November 7, 2023
- Manuscript Accepted: December 6, 2023
- Published: January 8, 2024

Abstract

This study explores the utilization of a liquid crystal lens with a shiftable axis for true-color and super-resolution imaging. By maintaining the optical power and shifting the axis of the liquid crystal lens, precise sub-pixel level shifts are applied to the images formed on the sensor, enabling the construction of true-color and super-resolution images. A comparative analysis with the traditional interpolation-based demosaicing method reveals that true-color imaging not only enhances clarity and effective pixel count, but also significantly reduces occurrences of false color, edge aliasing, and color moiré artifacts.

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Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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	$v_{1} / V_{r m s}$	$v_{2} / V_{r m s}$	$v_{3} / V_{r m s}$	$v_{4} / V_{r m s}$	$φ_{31} /^{\circ}$	$φ_{42} /^{\circ}$	Power/D
(a)	1.75	1.75	1.75	1.75	90.00	90.00	0.51
(b)	1.94	1.75	1.57	1.75	88.66	90.00	0.49
(c)	1.94	1.57	1.57	1.94	88.66	88.66	0.48
(d)	1.75	1.57	1.75	1.94	90.00	88.66	0.48

	(a)	(b)	(c)	(d)
$x / m m$	−0.03	0.56	0.55	−0.01
$y / m m$	0.03	0.03	0.58	0.57

	(a)	(b)	(c)	(d)
$x / p i x e l s$	0.00	1.00	0.94	0.04
$y / p i x e l s$	0.00	0.06	1.04	1.01

	$v_{1} / V_{r m s}$	$v_{2} / V_{r m s}$	$v_{3} / V_{r m s}$	$v_{4} / V_{r m s}$	$φ_{31} /^{\circ}$	$φ_{42} /^{\circ}$	Power/D
(a)	1.75	1.75	1.75	1.75	90.00	90.00	0.51
(b)	1.94	1.75	1.57	1.75	88.66	90.00	0.49
(c)	1.94	1.57	1.57	1.94	88.66	88.66	0.48
(d)	1.75	1.57	1.75	1.94	90.00	88.66	0.48

	(a)	(b)	(c)	(d)
$x / m m$	−0.03	0.56	0.55	−0.01
$y / m m$	0.03	0.03	0.58	0.57

	1	2	3
Interpolated image
True-color image
True-color super-resolution image

Abstract

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Tables (5)

Equations (7)

Applied Optics