两步正像周视彩虹全息术

提出一种正-正两步法周视彩虹全息术,利用两次孔径共轭技术,勿需严格的共轭再现及复位对准过程,也不需要任何特殊成大口径的光学元件,便能获得可周视360°观察的平板彩虹全息图。     

彩虹全息图色散观察窗的设计与综合

本文提出一种对彩虹全息图的颜色加密方法。文章介绍了基本原理、色度学计算及实验验证过程。     

电视故障语音提示和远程监控系统设计

设计了一个电视故障语音提示和远程监控系统,从电视机开关电源输出电压和输出电流检测,由微处理控制器对它们进行故障识别和收看时间识别。通过ISD1760语音芯片、GR47无线模块和GPRS网络,从而实现了电视故障的语音提示和故障信息远程发送及收看时间的远程管理。实验表明,该电视的远程管理系统具有良好的可靠性、实用性和安全性等优点。     

OCB模式液晶显示器件的膜补偿模拟优化

研究了OCB模式液晶显示器件的膜补偿方式,给出了4种膜补偿结构的优化参数以及4种膜补偿结构下的等对比度视角图和响应时间。4种膜补偿结构通过模拟与研究都得到了很好的优化结果,最大对比度都可以达到2 200以上,响应时间在2ms以下。     

电容触摸式LCD视角补偿及三基色色散特性研究

通过延迟膜实现对偏振光的调制,改善液晶显示器件视角和补偿RGB三基色色散特性。用WGD-6型光学多道分析器分别测试电容触摸式LCD以及带延迟膜的电容触摸式LCD在不同电压驱动下垂直方向上不同视角的三基色电光特性。结果表明,随着视角的不断增大,电容触摸式LCD垂直方向上绿基色的相对光强偏离红、蓝基色的相对光强十分严重,导致显示图像偏色现象严重;在电容触摸式LCD表面贴加延迟膜之后,能够有效地降低三基色相对光强的差值,从而达到颜色校正、扩大可视角度的目的。     

Effects of illumination conditions on preferred viewing distance of portable liquid‐crystal television

This study explored the effect of TV size, light source, and ambient illumination on the preferred viewing distance of portable liquid‐crystal‐display televisions. Results showed that the mean preferred viewing distance was 1389 mm. TV size had significant effects on preferred viewing distance. The larger the screen size, the greater the preferred viewing distance, at around 6.7–14.7 times the width of the screen (W). Light sources revealed no significant effect on preferred viewing distance. The effect of ambient illumination on preferred viewing distance was significant. The higher the ambient illumination was, the longer the preferred viewing distance.     

The effects of second-screen viewing and the goal congruency of supplementary content on user perceptions

Users’ desire to view additional content while watching TV has increased significantly in recent years. This study investigates the optimal way to show supplementary content and evaluates the types of additional information that should be provided. We conduct two 2 (single screen vs. second screen) × 2 (providing additional content with congruent goals vs. incongruent goals) between-subjects design experiments, one with news information (utilitarian content) and the other with soft drama programming (hedonic content). The results showed that viewing supplemental content with related information on a different screen strengthens user perceptions of both news and drama. However, the interaction effect of second-screen viewing and the goals of additional content differed across the main types of TV content. The results of this study are relevant to both scholars and practitioners who seek ways to enhance the effectiveness of second-screen usage.     

LCD模块对比度、视角和响应时间测量方法研究

从对LCD模块进行测试的方法出发,分析了LCD模块测试的原理,提出了通过控制LCD模块直流工作电压变化来进行对比度、视角和响应时间测量的理论依据,得出一种新颖的LCD模块测试方法,并对几种测量方法所得结果进行了比较和分析。     

LCD视角的主观视觉感知评价方法

为了了解LCD显示器件的视角问题,设计了在LCD上显示静态图片的主观视觉评价实验.为了消除心理学中所谓的残留余象的影响,在此主观实验的基础上进行了一些改进和完善,引入了参考屏.并针对彩色图片在不同显示器重现上的颜色失真问题进行了相应处理.最后对两次的实验的数据结果进行了分析和比较, 改进后的实验对于LCD视角问题的研究更具有参考价值.     

The peripheral viewing of dials.

Four Ss each read dials of four pointer designs at lateral displacements of 10° from 10° to 80°. Results were analyzed in terms of time and error scores. No significant differences were found among the pointer designs. "If reversal errors are ignored, the ability to discriminate pointer position when the dial is displaced as much as 40° from the fixation point is good. Even at 80°… readings are better than chance." (PsycINFO Database Record (c) 2010 APA, all rights reserved)