scholarly journals Pursuing High Quality Phase-Only Liquid Crystal on Silicon (LCoS) Devices

2018 ◽  
Vol 8 (11) ◽  
pp. 2323 ◽  
Author(s):  
Huang-Ming Chen ◽  
Jhou-Pu Yang ◽  
Hao-Ting Yen ◽  
Zheng-Ning Hsu ◽  
Yuge Huang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
High Resolution ◽  
Current Status ◽  
Driving Frequency ◽  
Light Modulation ◽  
High Definition ◽  
High Quality ◽  
Hardware Interface ◽  
Spatial Light Modulation ◽  
Liquid Crystal On Silicon

Fine pixel size and high-resolution liquid crystal on silicon (LCoS) backplanes have been developed by various companies and research groups since 1973. The development of LCoS is not only beneficial for full high definition displays but also to spatial light modulation. The high-quality and well-calibrated panels can project computer generated hologram (CGH) designs faithfully for phase-only holography, which can be widely utilized in 2D/3D holographic video projectors and components for optical telecommunications. As a result, we start by summarizing the current status of high-resolution panels, followed by addressing issues related to the driving frequency (i.e., liquid crystal response time and hardware interface). LCoS panel qualities were evaluated based on the following four characteristics: phase linearity control, phase precision, phase stability, and phase accuracy.

scholarly journals Special Issue on Liquid Crystal on Silicon Devices: Modeling and Advanced Spatial Light Modulation Applications

2019 ◽  
Vol 9 (15) ◽  
pp. 3049 ◽  
Author(s):  
Andrés Márquez ◽  
Ángel Lizana
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Displays ◽  
Light Modulation ◽  
Special Issue ◽  
Cell Configuration ◽  
Silicon Devices ◽  
Twisted Nematic ◽  
Spatial Light Modulation ◽  
Liquid Crystal On Silicon

Since the first liquid crystal displays (LCDs) at the beginning of the seventies—based on the twisted-nematic cell configuration [...]

Failure Analysis of the Digital Micromirror Device

2002 ◽  
Author(s):  
Cary Davis ◽  
Wes Mahin ◽  
Becky Holdford
Keyword(s):  
High Resolution ◽  
Failure Analysis ◽  
Mechanical Systems ◽  
Digital Micromirror Device ◽  
Light Modulation ◽  
High Quality ◽  
Show Evidence ◽  
Spatial Light Modulation

Abstract The Digital Micromirror Device (DMD) is a spatial light modulation Micro-Optical Electro-Mechanical Systems (MOEMS) device used in tabletop projectors, televisions and cinema projection systems. This device creates high resolution, high quality images by deflecting/modulating light with microscopic mirrors. Failure analysis of these devices requires superstructure, package, optics, and substructure approaches. Particles within the active array of a DMD are often killer defects, but those are the subjects of an entire discussion of their own. This paper will show evidence of failures associated with: windows in the package lids, failures of the superstructure area, and failures within the substructure. Methods for removal of the mirrors, as well as other structures, will be covered in greater detail. We will conclude with examples of analysis areas in DMD devices that show how they differ from other types of devices.

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.

High-resolution spatial light modulation with distributed photorefractive devices

1998 ◽  
Vol 10 (2) ◽  
pp. 221-223 ◽  
Author(s):  
E. Canoglu ◽  
P. Tayebati ◽  
C. Hantzis ◽  
A. Jehanno ◽  
R.N. Sacks
Keyword(s):  
High Resolution ◽  
Light Modulation ◽  
Spatial Light Modulation

scholarly journals Comparison of nematic liquid-crystal and DMD based spatial light modulation in complex photonics

2017 ◽  
Vol 25 (24) ◽  
pp. 29874 ◽  
Author(s):  
Sergey Turtaev ◽  
Ivo T. Leite ◽  
Kevin J. Mitchell ◽  
Miles J. Padgett ◽  
David B. Phillips ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Light Modulation ◽  
Spatial Light Modulation

A high-resolution wavefront compensating system using a liquid-crystal on silicon chip

2009 ◽  
Vol 51 (12) ◽  
pp. 2979-2985 ◽  
Author(s):  
Seow-Hwang Eng ◽  
Fred Reinholz ◽  
Douglas Chai
Keyword(s):  
Liquid Crystal ◽  
High Resolution ◽  
Liquid Crystal On Silicon
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