Design of digital light processing mini-projection lens

Jiani Su; Yuejing Qi; Yu Wang; Zengxiong Lu; Guanghua Yang; Wei Qi; Bing Li

doi:10.1117/12.2506238

16 January 2019 Design of digital light processing mini-projection lens

Jiani Su, Yuejing Qi, Yu Wang, Zengxiong Lu, Guanghua Yang, Wei Qi, Bing Li

Proceedings Volume 10838, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 108381F (2019) https://doi.org/10.1117/12.2506238
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China

Abstract

For the rapid development need of the digital light processing (DLP), we designed a mini-projection lens applied to 0.65” DLP with ZEMAX. The mini-projection lens is composed of 9 group of 10 lenses, total length is 90mm, and the maximum aperture is 36mm. It has simple structure, small size, low processing and assembly costs, suitable for mass production. F-number is 2.4, projection ratio is 1.56, effective focal length is 22.67mm, and back working distance is 28mm. Its modulated transfer function (MTF) in all fields is higher than 0.75 at 66lp/mm, and higher than 0.6 at 100lp/mm, which has good image quality. The full field distortion is less than 0.2%, meeting the low distortion requirement of the projection lens.

Citation Download Citation

Jiani Su, Yuejing Qi, Yu Wang, Zengxiong Lu, Guanghua Yang, Wei Qi, and Bing Li "Design of digital light processing mini-projection lens", Proc. SPIE 10838, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 108381F (16 January 2019); https://doi.org/10.1117/12.2506238

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