[2] T H Tomkinson, J L Bentley, M K Crawford, et al.. Rigid endoscopic relay systems: a comparative study [J]. Appl Opt, 1996, 35(34): 6674-6683.
[3] R Liang. Optical Design for Biomedical Imaging [M]. New York: SPIE Press, 2010. 379-386.
[4] F Doglietto, D M Prevedello, J A Jane Jr, et al.. A brief history of endoscopic transsphenoidal surgery: from Philipp Bozzini to the First World Congress of Endoscopic Skull Base Surgery [J]. Neurosurgical Focus, 2005, 19(6): 1-6.
[5] Lü Ping, Liu Fang, Lü Kunzhang, et al.. A developmental history of endoscopy [J]. Chinese J Medical History, 2002, 32(1): 10-14.
[6] J Bhatt, A Jones, S Foley, et al.. Harold Horace Hopkins: a short biography [J]. BJU International, 2010, 106(10): 1425-1428.
[7] Zhong Xing, Zhang Yuan, Jin Guang. Illumination uniformity optimization of wide-viewing-field optical system [J]. Acta Optica Sinica, 2012, 32(3): 0322004.
[8] Li Xiaotong, Cen Zhaofeng. Geometrical Optics, Aberrations and Optical Design [M]. Hangzhou: Zhejiang University Press, 2003. 71-73.
[9] Li Shixian, An Liansheng, Cui Guihua. Applied Optics [M]. Beijing: Beijing Institute of Technology Press, 1994. 135-138.
[10] Xiang Yang, Jiang Huilin, Hu Jiasheng. Design on rigid medical endoscope optical system structure [J]. J Changchun University of Science and Technology (Natural Science Edition), 2007, 30(3): 5-6.
[12] K Ono. Image Transmitting Optical System: U.S.5731916A [P]. [1998-03-24].
[13] M Laikin. Lens Design (3rd Edition) [M]. New York: CRC Press, 2006. 241-245.
[14] Z Malacara. Handbook of Optical Design (2nd Edition) [M]. New York: CRC Press, 2004. 442-445.
[15] Li Lin. Modern Optical Design Approach [M]. Beijing: Beijing Institute of Technology Press, 2009. 133-135.
[16] J B Caldwell. Diffraction-limited endoscope system [J]. Optics and Photonics News, 1998, 9(6): 48-49.
[18] W J Smith. Modern Optical Engineering (3rd Edition) [M]. New York: Tata McGraw-Hill Education, 2000. 256-257.