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专利名称：IMAGE-FORMING OPTICAL SYSTEM发明人：Matsuo, Eiki申请号：EP00944407.6申请日：20000712公开号：EP1211541A1公开日：20020605
专利附图：
摘要：A luminous flux, from one conjugate surface (A), having an opening angle of atleast 10° sequentially passes through a first optical system (30) having a luminous fluxconvergent action in the vicinity of its reference axis and a second optical system (31)having a luminous flux divergent action in the vicinity of its reference axis, and converges
on another conjugate surface (B). A specific condition is given to the converging distanceof each converging point at a luminous flux section including a principal ray according tothe passing position of the luminous flux through the first optical system (30) to therebyimplement an oblique-incident optical system having a half angle of at least 60° and acomparatively simple structure irrespective of a type of an optical element used.
申请人：Matsuo, Eiki
地址：6666-235, Oaza Kamisuwa Suwa-shi, Nagano 392-0003 JP
国籍：JP
代理机构：Style, Kelda Camilla Karen
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