9.3 X continuous zoom optical system with finite conjugate distance

Yiyu Li; Yuanyuan Wang; Dexi Zhu; Jiaojie Chen; Chengpeng Jin; Fan Lu

doi:10.1117/12.865796

22 October 2010 9.3 X continuous zoom optical system with finite conjugate distance

Yiyu Li, Yuanyuan Wang, Dexi Zhu, Jiaojie Chen, Chengpeng Jin, Fan Lu

Proceedings Volume 7658, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology; 76582U (2010) https://doi.org/10.1117/12.865796
Event: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2010, Dalian, China

Abstract

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, Yuanyuan Wang, Dexi Zhu, Jiaojie Chen, Chengpeng Jin, and 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); https://doi.org/10.1117/12.865796

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KEYWORDS

Zoom lenses

Tolerancing

Modulation transfer functions

Objectives

Monte Carlo methods

Image quality

Iris

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