49.1: Invited Paper: Opportunities of Liquid Crystal Polarization Holograms in Augmented and Virtual Reality Optics & Display Systems

2021 ◽  
Vol 52 (S2) ◽  
pp. 591-592
Author(s):  
Lu Lu ◽  
Taha Masood ◽  
Barry Silverstein
Keyword(s):  
Virtual Reality ◽  
Liquid Crystal ◽  
Display Systems

33‐4: Fast Switchable Multi‐Focus Polarization‐Dependent Ferroelectric Liquid‐Crystal Lenses for Virtual Reality

2021 ◽  
Vol 52 (1) ◽  
pp. 439-442
Author(s):  
Zheng-Nan Yuan ◽  
Ming Cheng ◽  
Xin-Yi Yu ◽  
Zhi-Bo Sun ◽  
An-Ran Li ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Liquid Crystal ◽  
Ferroelectric Liquid Crystal

scholarly journals Enhancing the Optical Efficiency of Near-Eye Displays with Liquid Crystal Optics

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 107
Author(s):  
Tao Zhan ◽  
En-Lin Hsiang ◽  
Kun Li ◽  
Shin-Tson Wu
Keyword(s):  
Virtual Reality ◽  
Liquid Crystal ◽  
High Efficiency ◽  
Berry Phase ◽  
Optical Element ◽  
Liquid Crystal Polymer ◽  
Proof Of Concept ◽  
Optical Efficiency ◽  
Crystal Polymer ◽  
Light Efficiency

We demonstrate a light efficient virtual reality (VR) near-eye display (NED) design based on a directional display panel and a diffractive deflection film (DDF). The DDF was essentially a high-efficiency Pancharatnam-Berry phase optical element made of liquid crystal polymer. The essence of this design is directing most of the display light into the eyebox. The proposed method is applicable for both catadioptric and dioptric VR lenses. A proof-of-concept experiment was conducted with off-the-shelf optical parts, where the light efficiency was enhanced by more than 2 times.

Exploring learner acceptance of the use of virtual reality in medical education: a case study of desktop and projection-based display systems

2013 ◽  
Vol 24 (1) ◽  
pp. 3-19 ◽  
Author(s):  
Hsiu-Mei Huang ◽  
Shu-Sheng Liaw ◽  
Chung-Min Lai
Keyword(s):  
Medical Education ◽  
Virtual Reality ◽  
Display Systems

scholarly journals Practical Chromatic Aberration Correction in Virtual Reality Displays Enabled by Cost‐Effective Ultra‐Broadband Liquid Crystal Polymer Lenses

2019 ◽  
Vol 8 (2) ◽  
pp. 1901360 ◽  
Author(s):  
Tao Zhan ◽  
Junyu Zou ◽  
Jianghao Xiong ◽  
Xiaomin Liu ◽  
Hao Chen ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Liquid Crystal ◽  
Cost Effective ◽  
Chromatic Aberration ◽  
Liquid Crystal Polymer ◽  
Aberration Correction ◽  
Crystal Polymer

scholarly journals The Feeling is Real: Emotion Elicitation in Virtual Reality

2019 ◽  
Vol 63 (1) ◽  
pp. 252-256
Author(s):  
Sahinya Susindar ◽  
Mahnoosh Sadeghi ◽  
Lea Huntington ◽  
Andrew Singer ◽  
Thomas K. Ferris
Keyword(s):  
Decision Making ◽  
Virtual Reality ◽  
Cognitive Processes ◽  
Emotional Responses ◽  
Decision Task ◽  
Affective States ◽  
Desktop Computer ◽  
Emotion Elicitation ◽  
Human Decision ◽  
Display Systems

Classical methods for eliciting emotional responses, including the use of emotionally-charged pictures and films, have been used to study the influence of affective states on human decision-making and other cognitive processes. Advanced multisensory display systems, such as Virtual Reality (VR) headsets, offer a degree of immersion that may support more reliable elicitation of emotional experiences than less-immersive displays, and can provide a powerful yet relatively safe platform for inducing negative emotions such as fear and anger. However, it is not well understood how the presentation medium influences the degree to which emotions are elicited. In this study, emotionally-charged stimuli were introduced via two display configurations – on a desktop computer and on a VR system –and were evaluated based on performance in a decision task. Results show that the use of VR can be a more effective method for emotion elicitation when study decision-making under the influence of emotions.

scholarly journals Automatic Registration of Multi-Projector Based on Coded Structured Light

Symmetry ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1397
Author(s):  
Shuaihe Zhao ◽  
Mengyi Zhao ◽  
Shuling Dai
Keyword(s):  
Virtual Reality ◽  
Structured Light ◽  
New Method ◽  
Geometric Distortion ◽  
Feature Points ◽  
Automatic Registration ◽  
Geometric Correction ◽  
Flight Simulators ◽  
Display Systems

Multi-projector display systems are widely used in virtual reality, flight simulators, and other entertainment systems. Geometric distortion and color inconsistency are two key problems to be solved. In this paper a geometric correction principle is theoretically demonstrated and a consistency principle of geometric correction is first proposed. A new method of automatic registration of a multi-projector on a curved screen is put forward. Two pairs of binocular-cameras are used to reconstruct the curved screen. To capture feature points of the curved screen precisely, a group of red-blue coded structured light images is designed to be projected onto the screen. Geometric homography between each projector and the curved screen is calculated to gain a pre-warp template. Work which can gain a seamless display is illustrated by a six-projector system on the curved screen.

scholarly journals Submillisecond-response liquid crystal for high-resolution virtual reality displays

2017 ◽  
Vol 25 (7) ◽  
pp. 7984 ◽  
Author(s):  
Fangwang Gou ◽  
Haiwei Chen ◽  
Ming-Chun Li ◽  
Seok-Lyul Lee ◽  
Shin-Tson Wu
Keyword(s):  
Virtual Reality ◽  
Liquid Crystal ◽  
High Resolution

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 Broadband cholesteric liquid crystal lens for chromatic aberration correction in catadioptric virtual reality optics

2021 ◽  
Vol 29 (4) ◽  
pp. 6011
Author(s):  
Yannanqi Li ◽  
Tao Zhan ◽  
Zhiyong Yang ◽  
Chi Xu ◽  
Patrick L. LiKamWa ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Chromatic Aberration ◽  
Aberration Correction ◽  
Liquid Crystal Lens
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