反射型硅基液晶显示模式

文章列举了适用于反射型硅基液晶显示（LCOS）的关态常白和常黑反射型显示模式,模拟出电光曲线,着重关注液晶显示的驱动电压,RGB三基色色散,未放置补偿片,通过偏振分光棱镜（PBS）产生偏振光,改变扭曲角度,光学延迟量以及入射偏振光方向与临近液晶层取向夹角达到改变模式的目的。针对LCOS的不同要求,在显示模式之间进行了对比,为实际的模式设计提供了理论依据。     

反射型LCOS器件用于红外场景仿真研究

提出采用反射型LCOS（Reflective Liquid Crystal on Silicon-RLCOS）器件实现动态红外场景仿真，阐述了RLCOS器件的结构及信号写入原理。利用液晶指向矢分布计算模型和光在液晶中传播规律计算模型，分析了液晶光阀的电光特性，结果表明，如果选取一组适当的光阀参数，可使光阀在中波和长波红外波段均有较好的调制特性，输出红外辐射功率与像素电压有较近似的线性关系，可以达到较好的仿真效果。     

Contrast optimization for MacNeille‐PBS‐based LCOS projection systems

Abstract— Contrast limits are investigated for MacNeille‐PBS‐based LCOS projection systems that use retarder stack filters (RSFs). The two contributing factors are considered separately; namely, the color‐management system and the panel port. To enhance performance of the former, skew‐ray‐compensated RSFs are introduced. For the latter, a general three‐step methodology is presented to optimize contrast by compensating the LCOS panel. It is shown that the orientation of the LCOS panel and compensator, relative to the MacNeille PBS, is critical. The significant impact of AR‐coating performance on system contrast is also revealed. Methods to enhance ANSI contrast are proposed. A high‐contrast architecture will be presented by way of example.     

An LCOS‐based digital‐cinema projector

Abstract— A digital cinema projector that utilizes three JVC QXGALCDs, and provides 12,000 lumens, 2000:1 contrast, and 3‐Mpixel resolution was developed. This system, which was described in a prior paper (see Ref. 10), has a novel optical configuration based on the use of intermediate imaging optics and wire‐grid polarizers and is described in greater detail in this paper. The polarization optics, including the polarization compensators, contribute to a system that provides high contrast at a low f/#, with a wide color gamut and minimal color shading at high power.     

LCOS技术的发展

介绍了LCOS器件结构,应用中的关键问题。描述了投影显示关键参数（分辩率、对比度、投影光学、系统的光通量、彩色化、灯及屏幕）及优化方法。讨论了有街于研究开发的问题。主要有液晶显示的各种电光效应。     

Electro‐chemical activity in liquid crystal on silicon microdisplays

In reflective liquid crystal devices that have an asymmetric electrode structure, an internal cell voltage is often present that interferes with the proper functioning of the device. Contrary to transmissive devices, this internal voltage cannot be attributed solely to ionic charges in the liquid crystal. On the basis of extensive measurements, an electro‐chemical model is developed and validated, providing a complete explanation for the generation and the dynamic behavior of the internal voltage in asymmetric liquid crystal devices. A possible solution for eliminating the occurrence of the internal voltage is also provided.     

显示器检测中光学器件、照明和图像处理三者间的权衡

如果合理选择显示器检测系统的光学器件，那么只要正确选择照明及图像处理方式，就能得到接近理想的系统性能，而与光学器件的相关特性无关。     

用LED光源的单片式LCOS彩色投影机

介绍一种以LED作为光源的单片LCOS全彩色投影机。证实由于偏振光转换导致的光输出限制是可以克服的，就是通过LCOS面板小的工作F#和LED与偏振光回收兼容性设计，而且避免了光源光束扩展量的增加。介绍LCOS投影HDTV在光收集元件和驱动方式等方面关键技术的进展。实例采用常规LED，得到大于401m的屏幕流明光通量。     

Bistable FLCOS devices for doubled‐brightness micro‐projectors

Abstract— Optical output is of paramount importance to emerging ultra‐miniature projector products. Experimental bistable ferroelectric liquid‐crystal‐on‐silicon (FLCOS) projection microdisplay devices using newly developed FLC materials aligned on obliquely deposited SiO₂ have been developed. These devices enable the doubling of the illumination duty cycle, and hence doubling of the achievable projector light output, while maintaining a DC‐balanced electrical drive.     

Eye‐safety analysis of current laser‐based LCOS projection systems

Abstract— A laser safety analysis for liquid‐crystal—on—silicon (LCOS) based imaging projection systems utilizing laser light sources is presented. It is shown that a typical laser‐based imaging projector is capable of providing a D65 white‐balanced luminous flux in excess of 20 lm while remaining Class 1 eye safe. By considering a Class 2 classification, it is shown that the same architecture is capable of providing several hundred lumens, a performance level which could potentially be applicable to a new class of high‐brightness miniature projection systems.