P-85: Color Holographic Display System Based On Liquid Crystal Lens

2016 ◽  
Vol 47 (1) ◽  
pp. 1443-1445
Author(s):  
Rong Wei ◽  
Di Wang ◽  
Qiong-Hua Wang
Keyword(s):  
Liquid Crystal ◽  
Display System ◽  
Holographic Display ◽  
Liquid Crystal Lens

Simulation of modal control liquid crystal lens with step sheet resistance distribution

2020 ◽  
Vol 35 (9) ◽  
pp. 908-913
Author(s):  
Wei-xing GONG ◽  
◽  
Tao YU ◽  
Wei-zhi WANG ◽  
Jia-lun ZHANG ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Sheet Resistance ◽  
Modal Control ◽  
Liquid Crystal Lens

scholarly journals Gradient pretilt angle alignment materials with different photosensitivity for tunable polarization‐independent self‐aligned liquid crystal lens

2021 ◽  
Author(s):  
Veronika S. Bezruchenko ◽  
Alexander A. Muravsky ◽  
Anatoli A. Murauski ◽  
Alexander I. Stankevich ◽  
Uladzimir V. Mahilny
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Lens ◽  
Polarization Independent ◽  
Pretilt Angle

scholarly journals Holographic Display System to Suppress Speckle Noise Based on Beam Shaping

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 204
Author(s):  
Di Wang ◽  
Yi-Wei Zheng ◽  
Nan-Nan Li ◽  
Qiong-Hua Wang
Keyword(s):  
Optical Element ◽  
Speckle Noise ◽  
Beam Shaping ◽  
Diffractive Optical Element ◽  
The Other ◽  
Spatial Light Modulators ◽  
Viewing Angle ◽  
Display System ◽  
Holographic Display ◽  
Light Modulators

In this paper, a holographic system to suppress the speckle noise is proposed. Two spatial light modulators (SLMs) are used in the system, one of which is used for beam shaping, and the other is used for reproducing the image. By calculating the effective viewing angle of the reconstructed image, the effective hologram and the effective region of the SLM are calculated accordingly. Then, the size of the diffractive optical element (DOE) is calculated accordingly. The dynamic DOEs and effective hologram are loaded on the effective regions of the two SLMs, respectively, while the wasted areas of the two SLMs are performed with zero-padded operations. When the laser passes through the first SLM, the light can be modulated by the effective DOEs. When the modulated beam illuminates the second SLM which is loaded with the effective hologram, the image is reconstructed with better quality and lower speckle noise. Moreover, the calculation time of the hologram is reduced. Experiments indicate the validity of the proposed system.

Investigation on dynamic holographic display in liquid crystal film doped with carbon dots

2020 ◽  
Vol 10 (6) ◽  
pp. 780-787
Author(s):  
Hongyue Gao ◽  
Suna Li ◽  
Jicheng Liu ◽  
Wen Zhou ◽  
Fan Xu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Real Time ◽  
Diffraction Efficiency ◽  
Carbon Dots ◽  
Applied Electric Field ◽  
Light Polarization ◽  
Forming Process ◽  
Time Dynamic ◽  
Holographic Display

In this paper, we studied the holographic properties of liquid crystal (LC) thin film doped with carbon dots (CDs) which can be used as real-time holographic display screen. The maximum value of diffraction efficiency can reach up to 30% by using a low applied electric field 0.2 V/μm. Holograms in the LC film can be dynamically formed and self-erased. The hologram build-up time and the hologram self-erasure time in the material is fast enough to realize video refresh rate. In addition, the forming process of hologram was studied. The holographic diffraction efficiency was measured depending on the intensity of recording light, applied electric field, the intensity of readout light, and readout light polarization direction. Triple enhancement of the diffraction efficiency value by the modulation of voltage under the condition of low recording energy is presented. Therefore, we develop an easy way to obtain real-time dynamic holographic red, green and blue displays with high diffraction efficiency, which allow the LC film doped with CDs to be used as a holographic 3D display screen.

Liquid Crystal Lens Array with Hexagonal-Hole-Patterned Electrodes

2004 ◽  
Vol 43 (9A) ◽  
pp. 6108-6111 ◽  
Author(s):  
Mao Ye ◽  
Shin Hayasaka ◽  
Susumu Sato
Keyword(s):  
Liquid Crystal ◽  
Lens Array ◽  
Hexagonal Hole ◽  
Patterned Electrodes ◽  
Liquid Crystal Lens

AN ELECTRICALLY TUNABLE FOCUSING PICO PROJECTION SYSTEM BASED ON A LIQUID CRYSTAL LENS ADOPTING A LIQUID CRYSTAL AND POLYMER COMPOSITE FILM

2011 ◽  
Vol 20 (04) ◽  
pp. 477-484 ◽  
Author(s):  
HUNG-CHUN LIN ◽  
MING-SYUAN CHEN ◽  
YI-HSIN LIN
Keyword(s):  
Liquid Crystal ◽  
Composite Film ◽  
Polymer Composite ◽  
Optical Analysis ◽  
Projection System ◽  
Polymer Composite Film ◽  
Liquid Crystal On Silicon ◽  
Focusing Lens ◽  
Liquid Crystal Lens ◽  
Image Performance

An electrically tunable liquid-crystal-on-silicon (LCOS)-based pico projection system based on a liquid crystal lens adopting a liquid crystal and polymer composite film (LCPCF) is demonstrated. The LC lens consists of two built-in sub-lenses: one is an electrically tunable focusing lens controlled by a LC layer and the other is a fixed focused LCPCF lens. The electrically tunable focusing range of the pico projection system is 200 cm to ~7 cm when the voltage is from 0 to 35 Vrms. The image performance is also demonstrated. The related optical analysis is discussed. This study opens a new window for electrically tunable focusing pico projection system.

79-3: Video-rate Holographic Display in ZnSe layer-assisted Quantum Dot Doped Liquid Crystal with High-photorefractive Sensitivity

2017 ◽  
Vol 48 (1) ◽  
pp. 1163-1165 ◽  
Author(s):  
Xiao Li ◽  
Zhicheng Song ◽  
Fulin Li ◽  
Xiaobin Dong ◽  
Weidong Liu
Keyword(s):  
Liquid Crystal ◽  
Quantum Dot ◽  
Holographic Display ◽  
Znse Layer

scholarly journals Dual layer electrode liquid crystal lens for 2D/3D tunable endoscopy imaging system

2016 ◽  
Vol 24 (8) ◽  
pp. 8527 ◽  
Author(s):  
Amir Hassanfiroozi ◽  
Yi-Pai Huang ◽  
Bahram Javidi ◽  
Han-Ping D. Shieh
Keyword(s):  
Liquid Crystal ◽  
Imaging System ◽  
Liquid Crystal Lens
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