P‐81: Electrically Tunable GRIN Liquid‐Crystal Lenticular Lens Array with Short Focal Length

2021 ◽  
Vol 52 (1) ◽  
pp. 1384-1386
Author(s):  
Rui Li ◽  
Fan Chu ◽  
Qiong-Hua Wang
Keyword(s):  
Liquid Crystal ◽  
Focal Length ◽  
Lens Array ◽  
Short Focal Length ◽  
Lenticular Lens

Short focal length tunable liquid crystal lenticular lens array based on fringe field effect

2020 ◽  
Vol 28 (10) ◽  
pp. 793-800
Author(s):  
Rui Li ◽  
Fan Chu ◽  
Li‐Lan Tian ◽  
Xiao‐Qing Gu ◽  
Xiang‐Yu Zhou ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Field Effect ◽  
Focal Length ◽  
Fringe Field ◽  
Lens Array ◽  
Short Focal Length ◽  
Lenticular Lens ◽  
Fringe Field Effect

An LCL-Lens Array With Electrodes of Interlaced Structure in Applications of Auto-Stereoscopic

2013 ◽  
Author(s):  
Paul C.-P. Chao ◽  
Tse-Yi Tu ◽  
Yung-Yuan Kao
Keyword(s):  
Liquid Crystal ◽  
Focal Length ◽  
Stereoscopic Display ◽  
Lens Array ◽  
Stereoscopic Displays ◽  
Smooth Potential ◽  
Lenticular Lens ◽  
Lens Power ◽  
Display Systems

Commercial auto-stereoscopic display systems have equipped optical lenticular lens sheets in order to realize the function which is able to support two images or views to right and left eyes of viewers. In applications of auto-stereoscopic display, the method of using the lenticular lens sheet, also called time- or spatial-multiplexed method, is first proposed as a patent by Ichinose [1]. The method has more advantages, which includes high luminous performance, movable of eyes position with constant view distance and watchable of multi-viewer. Besides, it can be also easily manufactured to make it very popular. Owing to the superiority, some studies about lenticular lens sheets have been proposed. Berkel et al. [2] have proposed several researches about the method of using lenticular lens sheets on multi-view auto-stereoscopic displays, and he has also proposed that slanted lenticular lens sheets or pixels could be improved the effect of flipped image by boundaries of lens and pixel [3–5]. 2D/3D switchable display is first realized by a method of dual-lenticular lens sheets [6]. Moreover, the method of using lenticular lens sheets has been proposed to be replaced by liquid crystal, LC, lens arrays, [7–9] in order to control viewer distance based on a function of tunable focal length. For the method, some issues of LC lenses should be solved like non-smooth potential in the LC layer and to improve the lens power [10–12].

scholarly journals A Microlens Super-Surface Film with Regular Graded Circular Hole-Like Subwavelength Structures for Highly Focusing Strength

Coatings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 776
Author(s):  
Jinshuang Wu ◽  
Leimengting Zhang ◽  
Yahong Li ◽  
Yixin Zhang ◽  
Bowei Yang ◽  
...  
Keyword(s):  
Circular Hole ◽  
Focal Length ◽  
Surface Film ◽  
Subwavelength Structures ◽  
Lens Array ◽  
Direct Laser ◽  
Short Focal Length ◽  
Micro Lens Array ◽  
Micro Lens ◽  
Sub Wavelength

Using the fact that a sub-wavelength structure exhibits the same thermal expansion coefficient as a micro-lens array, we design a micro-lens super-surface film with regular circular hole-like subwavelength structures to realize the high performances of central highly focusing strength and short focal length. In addition, based on the Fresnel—Kirchhoff diffraction theory, the influences of subwavelength structural period and height on the focusing performance of a micro-lens are analyzed. Furthermore, the finite-difference time-domain method is utilized to optimize the structural parameters. Via direct laser writing and an inductively coupled plasma process, we fabricated a square micro-lens array consisting of a 1000 × 1000 micro-lens unit with a sub-wavelength structure, and the optical focusing performance was measured in the visible light band. Finally, the experimental results indicate that the focal length is decreased to 15 μm, the focal spot central energy is increased by 7.3%, and the light transmission, enhanced via inserting sub-wavelength structures, corresponds to 3%. This proves that the designed micro-lens array with a regular-graded circular hole-like subwavelength structure can achieve central high focusing and a short focal length. This has applications in several fields of wavefront detection and light field imaging systems.

Lenticular lens array based on liquid crystal with a polarization-dependent focusing effect for 2D–3D image applications

2015 ◽  
Vol 16 (1) ◽  
pp. 11-15 ◽  
Author(s):  
Jiyoon Kim ◽  
Se-Um Kim ◽  
Bo-Yeon Lee ◽  
Jeng-Hun Suh ◽  
Sin-Doo Lee
Keyword(s):  
Liquid Crystal ◽  
3D Image ◽  
Lens Array ◽  
Focusing Effect ◽  
Lenticular Lens

scholarly journals Color-Matching Liquid Crystal Display using a Lenticular Lens Array and RGB Light Sources

2014 ◽  
Vol 18 (4) ◽  
pp. 345-349 ◽  
Author(s):  
Hwa Joon Jeon ◽  
Gyeungju Park ◽  
Jin Seog Gwag ◽  
Jong Hoon Lee ◽  
Jin Hyuk Kwon
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Light Sources ◽  
Color Matching ◽  
Lens Array ◽  
Lenticular Lens

Liquid crystal lenticular lens array with extended aperture by using gradient refractive index compensation

2020 ◽  
pp. 1-7
Author(s):  
Rui Li ◽  
Fan Chu ◽  
Li-Lan Tian ◽  
Xiao-Qing Gu ◽  
Xiang-Yu Zhou ◽  
...  
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Lens Array ◽  
Lenticular Lens ◽  
Gradient Refractive Index

128×128 Elements Frequency Driven Liquid Crystal Lens Array with Tunable Focal Length

2010 ◽  
Vol 30 (1) ◽  
pp. 218-223
Author(s):  
李晖 Li Hui ◽  
刘侃 Liu Kan ◽  
张新宇 Zhang Xinyu ◽  
张天序 Zhang Tianxu ◽  
沈绪榜 Shen Xubang
Keyword(s):  
Liquid Crystal ◽  
Focal Length ◽  
Lens Array ◽  
Liquid Crystal Lens
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