| LCOS大屏幕薄型背投电视广角投影物镜的设计 |
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| 引用本文： | 陆国华,沈为民.LCOS大屏幕薄型背投电视广角投影物镜的设计[J].光子学报,2009,38(3):601-604. |
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| 作者姓名： | 陆国华 沈为民 |
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| 作者单位： | 苏州大学,现代光学研究所,江苏省现代光学技术重点实验室,江苏,苏州,215006 |
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| 基金项目： | 广州市科技攻关计划项目 |
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| 摘 要： | 为了满足67英寸大屏幕LCOS背投电视的需要,设计了一款广角投影物镜.此广角投影镜头采用远心反远距结构,通过合理选用非球面和光学材料,设计的镜头具有视场大、投影距离短、工作距离长、相对孔径大、无渐晕、辐照度均匀等优点.在LCOS芯片奈奎斯特空间频率处的调制传递函数值高于0.5,色差仅约1/4像元,畸变低于5‰.
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| 关 键 词： | 光学设计 广角投影物镜 背投 远心反远距结构 像质评价 Wide angle projection lens Rear-projection Optical design Telecentric and retrofocus structure Image evaluation |
| 收稿时间： | 2007-10-17 |
| 修稿时间： | 2008-02-26 |
Wide Angle Projection Lens for LCOS Rear-Projection TV of Large Screen and Thin Structure |
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| LU Guo-hua,SHEN Wei-min.Wide Angle Projection Lens for LCOS Rear-Projection TV of Large Screen and Thin Structure[J].Acta Photonica Sinica,2009,38(3):601-604. |
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| Authors: | LU Guo-hua SHEN Wei-min |
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| Institution: | Jiangsu Key Lab of Morden Optical Technology;Institution of Modern Optical Technology;Soochow University;Suzhou;Jiangsu 215006;China |
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| Abstract: | A wide angle projection lens was designed to meet the requirement of LCOS rear-projection TV with 67〞screen.The projection lens adopt telecentric and retrofocus structure,the optical materials were chosen appropriately,and several aspheric surfaces were placed in reasonable position.It has many advantages such as large field of view,short projection distance,long working distance,high relative aperture,non-vignetting,uniform irradiance and so on.The lens has high image quality,its MTF value at Nyquist frequency of the used LCOS chip is higher than 0.5.Its lateral chromatic aberration is about one fourth of a pixel,and the distortion is less than 0.5 percent. |
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| Keywords: | Wide angle projection lens Rear-projection Optical design Telecentric and retrofocus structure Image evaluation |
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