22 October 2010 9.3 X continuous zoom optical system with finite conjugate distance
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A continuous zoom optical system with finite conjugate distance was designed for low-vision aid device. The configuration of the zoom optical system and the evaluation of the optical performance including modulation transfer function(MTF) and diffuse spot in diameter were investigated. The stability of the system performance was forecast by using the tolerance sensitivity analysis and Monte Carlo method. This mechanically compensated zoom lens combines four group components including a fixed objective, moving variator and compensator, and a fixed eyepiece with a total of 10 pieces of lens. The optical system which has a tube length of 76 mm and a front intercept distance of 262 mm can realize continuous zoom from 8.8~ 52 mm and 9.3 X zoom ratio without any image vignetting or obvious fluctuation in image quality.
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Yiyu Li, Yiyu Li, Yuanyuan Wang, Yuanyuan Wang, Dexi Zhu, Dexi Zhu, Jiaojie Chen, Jiaojie Chen, Chengpeng Jin, Chengpeng Jin, Fan Lu, Fan Lu, } "9.3 X continuous zoom optical system with finite conjugate distance", Proc. SPIE 7658, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, 76582U (22 October 2010); doi: 10.1117/12.865796; https://doi.org/10.1117/12.865796


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