LI Wei-shan, CHEN Chen, ZHANG Yu, LIU Xiao-chan. Digital light processing mini-projection lens based on ZEMAX[J]. Journal of Applied Optics, 2011, 32(6): 1121-1125.
Citation: LI Wei-shan, CHEN Chen, ZHANG Yu, LIU Xiao-chan. Digital light processing mini-projection lens based on ZEMAX[J]. Journal of Applied Optics, 2011, 32(6): 1121-1125.
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Digital light processing mini-projection lens based on ZEMAX

  • Qinhuangdao Audio-Visual Machinery Research Institute,Qinhuangdao 066000,China

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  • A wide-angle digital mini-projection lens applied to 0.5digital light processing(DLP) projectors was designed with ZEMAX. The structure is composed of 8 lenses. It is characterized by simlicity,compactness,low cost and easy processing.The effective focal lenth of the lens is 8.25 mm, F number is 2.2, field of view (FOV) is 80.5, the maximum diameter is less than 24 mm,the optical total track is 40mm and the back working distance is 24mm. Its modulated transfer function (MTF) in all fields is higher than 0.45 at 66 lp/mm. The absolute value of the full FOV distortion is less than 0.7%. The lateral chromatic aberration is less than 0.5 pixel .The image quality of the lens is very good.
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