| 背投系统视角计算方法研究 |
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| 引用本文： | 周金芳,刘旭.背投系统视角计算方法研究[J].光子学报,2007,36(9):1718-1721. |
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| 作者姓名： | 周金芳 刘旭 |
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| 作者单位： | 浙江大学,现代光学仪器国家重点实验室,杭州,310027;浙江大学,现代光学仪器国家重点实验室,杭州,310027 |
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| 摘 要： | 介绍了一种计算背投系统视角的方法,可用来衡量背投系统性能.背投系统的视角不仅仅依赖于背投屏幕,也与光学引擎和观看环境有关.综合这三个方面的因素得到背投系统的对比度和角度的关系,根据人眼能接受的最小对比度可推算出背投系统的视角.实验数据表明,根据方法中表达式计算所得视角与实际参量吻合较好,证明该计算方法简单有效.
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| 关 键 词： | 背投系统 对比度 视角 算法 |
| 文章编号： | 1004-4213（2007）09-1718-4 |
| 收稿时间： | 2006-04-26 |
| 修稿时间： | 2006-04-25 |
Theoretical Analysis for Calculating Viewing Angle of Rear Projection Systems |
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| ZHOU Jin-fang,LIU Xu.Theoretical Analysis for Calculating Viewing Angle of Rear Projection Systems[J].Acta Photonica Sinica,2007,36(9):1718-1721. |
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| Authors: | ZHOU Jin-fang LIU Xu |
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| Institution: | State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027 China |
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| Abstract: | A measurement which can calculate viewing angle of rear projection system is introduced.It can be used to scale performance of rear projection system.Viewing angle not only depends on rear projection screen,but also on optical engine and viewing environment.The relation of contrast and angle is determined by combining all these three effects.The viewing angle is calculated by the least contrast people can accept.The measured data proves that the view angles calculated by the measurement approach to the actual ones.By experiment,the new method based on the calculation of viewing angle has more efficiency and practicality in the design of rear projection system. |
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| Keywords: | Rear projection system Contrast Viewing angle Calculation |
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