[1] Zheng Fuqiang. General situation and new evolvement of operating microscope[J]. Chinese Medical Equipment Journal, 2004(6): 48-49. (in Chinese)
[2] Yu Qilian. Medicine Optical Instrument[M]. Tianjin: Science and Technology Press, 1988: 78-95. (in Chinese)
[3] Guo Yujun. Basic configuration and use maintainability of operating microscope[J]. Medical Equipment, 2001(1): 31. (in Chinese)
[4] Tao Chunkan. Zoom Lens Design[M]. Beijing: National Defense Industry Press, 1988: 153-163. (in Chinese)
[5] Wang Ziyu. Geometrical Optics and Optical Design[M]. Hangzhou: Zhejiang University Press, 1989: 55-62. (in Chinese)
[7] Zhang Yimo. Applied Optics[M]. 2nd ed. Beijing: China Machine Press, 1987: 576-596. (in Chinese)
[8] Yuan Xucang. Optical Design[M]. Beijing: Beijing Institute of Technology Press, 1988: 276-280. (in Chinese)