发明名称 Behind-stop type lens system for photographic cameras
摘要 A lens system for photographic cameras which has a very short total length and wherein aberrations are favorably corrected. Said lens system comprises a first positive meniscus lens component, a second biconcave lens component and a third cemented doublet component, and said lens system satisfying the conditions enumerated hereunder: (1) 0.23f< SIGMA d<0.
申请公布号 US4192579(A) 申请公布日期 1980.03.11
申请号 US19780873499 申请日期 1978.01.30
申请人 OLYMPUS OPTICAL CO LTD 发明人 HYAKUMURA, KAZUSHI
分类号 G02B9/12;G02B9/20;(IPC1-7):G02B9/20 主分类号 G02B9/12
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