Aklin, G.(1945). telephoto objective, U.S. Patent 2380207. ,OWdp<z
Arai, Y. (1984). Large aperture telephoto lens, U.S. Patent c:I1XC
Cooke, G. H.(1965). Photographic objectives, in Applied vR`-iRQ?_
Engineering, Vol. 3, R. Kingslake(Ed.), Academic, New *}R5=r0
Eggert, J.(1968). Photographic telephoto lenses of hing telephoto ;e;lPM{+
2288956. 6i[\?7O'0
Horikawa, Y. (1984). Telephoto lens system, U.S. Patent HX\@Qws
Kreitzer, M. H.(1982). Internal focusing telephoto lens, >SpXB:wx
Matsui, S.(1982). telephoto lens system, U.S. Patent 4338001. dVc;Tt
Tanaka, T.(1986). Lens system, U.S. Patent 4575198.