Birefringent films for contrast enhancement of liquid crystal on silicon projection systems

2006 ◽  
Vol 24 (4) ◽  
pp. 1546-1551 ◽  
Author(s):  
Karen Hendrix ◽  
Kim Tan ◽  
Markus Duelli ◽  
David Shemo ◽  
Markus Tilsch
Keyword(s):  
Liquid Crystal ◽  
Contrast Enhancement ◽  
Liquid Crystal On Silicon

scholarly journals Generation of diffractive optical elements onto photopolymer using liquid crystal on silicon displays

2017 ◽  
Author(s):  
Roberto Fernandez ◽  
Sergi Gallego ◽  
Francisco J. Martinez ◽  
Andres Marquez ◽  
Inmaculada Pascual ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Diffractive Optical Elements ◽  
Optical Elements ◽  
Liquid Crystal On Silicon

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.

scholarly journals Phase Compensation of the Non-Uniformity of the Liquid Crystal on Silicon Spatial Light Modulator at Pixel Level

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 967
Author(s):  
Zhen Zeng ◽  
Zexiao Li ◽  
Fengzhou Fang ◽  
Xiaodong Zhang
Keyword(s):  
Liquid Crystal ◽  
Phase Modulation ◽  
Spatial Light Modulator ◽  
Characteristic Curve ◽  
Physical Structure ◽  
Measuring System ◽  
Light Modulator ◽  
Phase Compensation ◽  
Modulation Characteristic ◽  
Liquid Crystal On Silicon

Phase compensation is a critical step for the optical measuring system using spatial light modulator (SLM). The wavefront distortion from SLM is mainly caused by the phase modulation non-linearity and non-uniformity of SLM’s physical structure and environmental conditions. A phase modulation characteristic calibration and compensation method for liquid crystal on silicon spatial light modulator (LCoS-SLM) with a Twyman-Green interferometer is illustrated in this study. A method using two sequences of phase maps is proposed to calibrate the non-uniformity character over the whole aperture of LCoS-SLM at pixel level. A phase compensation matrix is calculated to correct the actual phase modulation of the LCoS-SLM and ensure that the designed wavefront could be achieved. Compared with previously known compensation methods, the proposed method could obtain the phase modulation characteristic curve of each pixel on the LCoS-SLM, rather than a mono look-up table (LUT) curve or multi-LUT curves corresponding to an array of blocks over the whole aperture of the LCoS-SLM. The experiment results show that the phase compensation precision could reach a peak-valley value of 0.061λ in wavefront and this method can be applied in generating freeform wave front for precise optical performance.

Fringing Field Effect of the Liquid-Crystal-on-Silicon Devices

2002 ◽  
Vol 41 (Part 1, No. 7A) ◽  
pp. 4577-4585 ◽  
Author(s):  
Kuan-Hsu Fan Chiang ◽  
Shin-Tson Wu ◽  
Shu-Hsia Chen
Keyword(s):  
Liquid Crystal ◽  
Field Effect ◽  
Silicon Devices ◽  
Fringing Field ◽  
Liquid Crystal On Silicon ◽  
Fringing Field Effect

Predicting surface anchoring: molecular organization across a thin film of 5CB liquid crystal on silicon

2012 ◽  
Vol 3 (2) ◽  
pp. 573-579 ◽  
Author(s):  
A. Pizzirusso ◽  
R. Berardi ◽  
L. Muccioli ◽  
M. Ricci ◽  
C. Zannoni
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Molecular Organization ◽  
Surface Anchoring ◽  
5Cb Liquid Crystal ◽  
Liquid Crystal On Silicon

scholarly journals Implementation of 10-Bit Phase Modulation for Phase-Only LCOS Devices Using Deep Learning

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Yuan Tong ◽  
Mike Pivnenko ◽  
Daping Chu
Keyword(s):  
Deep Learning ◽  
Liquid Crystal ◽  
Phase Modulation ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Spatial Information ◽  
Learning Model ◽  
High Definition ◽  
Liquid Crystal On Silicon ◽  
Deep Learning Model

A deep learning model was built to optimize the phase flicker performance for given pulse width modulation (PWM) driving patterns of a liquid crystal on silicon (LCOS) device. 10-bit phase modulation was physically realized with a phase flicker of 0.055% over 1024 addressed phase levels in respect to the total modulation range of 2π and a separation probability of 62.63% for the phase to stay within its level without overlapping with the adjacent ones. The spatial information bandwidth of the full high-definition (HD) LCOS device at 100 Hz was improved by 25%, from ~1.6 Gb/sec to ~2 Gb/sec.

scholarly journals P-212: A 0.83ʺ Full HDTV Liquid Crystal on Silicon Component with In-Pixel Memory and 450Hz Refresh Rate

2006 ◽  
Vol 37 (1) ◽  
pp. 1027 ◽  
Author(s):  
T. Borel ◽  
P. Morvan ◽  
K. Sarayeddine ◽  
P. Rommeveaux ◽  
W. Becker ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Refresh Rate ◽  
Liquid Crystal On Silicon
Sign in / Sign up

Export Citation Format

Share Document