[1] Dong L L,Xiong J W,Wan Q H. Optics and Precision Engineering,2000,8(2): 198~202
[2] Luo C Z,Sun Y,Hu X D,et al. Acta Photonic Sinica,2003.32(10):1271~1273
[3] Luo C Z,Sun Y,Gao L M,et al. Acta Photonic Sinica,2003,32(5): 628~631
[4] Xu Z,Hu X D,Luo C Z,et al. Acta Photonic Sinica,2002,31(12):1497~1500
[5] Ma H. Precise Photolithographic Technics. Beijing:Weapon Industry Press,1994.179~183
[6] Cao Z F. Optics Machine,1985,5: 65~70
[7] Toshitsugu U,Fusao K,Toshio I,et al. Optical absolute encoder using spatial filter. SPIE,1987,814: 217~221
[8] Fusao K,Toshio I,Kunio K,et al. Multiturn absolute encoder using spatial filter. JSME International Jouranal,1990,33(1): 94~99
[9] Yuji M,Nobuhiko T,Tomoharu N,et al. Highperformance absolute rotary encoder using multitrack and M-code. Optical Engineering,2003,42(1): 124~130
[10] Imai M. Sensor Technology,1990,7: 26~30
[11] Yu Y W,Chang J. Chinese Journal of Scientific Instrument,2004,25(4): 541~544
[12] Su H B,Liu E H. Optics and Precision Engineering,2002,10(1): 74~78