LI Wei-shan, CHEN Chen, ZHANG Yu, LIU Xiao-chan. Design of short focal digital projection lens based on ZEMAX[J]. Journal of Applied Optics, 2010, 31(5): 714-717.
Citation: LI Wei-shan, CHEN Chen, ZHANG Yu, LIU Xiao-chan. Design of short focal digital projection lens based on ZEMAX[J]. Journal of Applied Optics, 2010, 31(5): 714-717.
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Design of short focal digital projection lens based on ZEMAX

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

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  • A short focal digital projection lens for 2.03cm DLP projectors was designed with ZEMAX. The structure is composed of ten lenses. Its production cost is low, and it is processed easily. The full FOV of the lens is 80, the aperture is about 1/2.1, E.F.L is about 12.7mm, B.F.L is about 37mm, and projection ratio is about 0.78/1. Its MTF in all fields less than 28is higher than 0.35 at the limiting spatial frequency of 35lp/mm. MTF in the most fields at half of the limiting spatial frequency is higher than 0.7. The absolute value of the full field of view distortion of the lens is less than 3%. The image quality of the lens is very good.
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