Aklin, G.(1945). telephoto objective, U.S. Patent 2380207. m.5@qmQ
Arai, Y. (1984). Large aperture telephoto lens, U.S. Patent 3"Kap/[h
Cooke, G. H.(1965). Photographic objectives, in Applied Wrm3U/>e
Engineering, Vol. 3, R. Kingslake(Ed.), Academic, New wr>6Go%
Eggert, J.(1968). Photographic telephoto lenses of hing telephoto [KW)z#`*
2288956. &!+1GI9z
Horikawa, Y. (1984). Telephoto lens system, U.S. Patent q03nu3uDI
Kreitzer, M. H.(1982). Internal focusing telephoto lens, *^Z -4
Matsui, S.(1982). telephoto lens system, U.S. Patent 4338001. u&f|z9
Tanaka, T.(1986). Lens system, U.S. Patent 4575198.