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Single focal length lens system, interchangeable lens apparatus and camera system
Single focal length lens system, interchangeable lens apparatus and camera system
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机译：单焦距镜头系统，可互换镜头装置和照相机系统
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摘要
A single focal length lens system comprising at least a positive first lens unit and a second lens unit, wherein the first lens unit includes a first sub lens unit E which successively comprises a negative lens element A, a positive lens element B, a negative lens element C and a positive lens element D, a second sub lens unit comprising at least one lens element is a focusing lens unit in the second lens unit, and the conditions: 1.0|fW/fA|2.2, 0.5fW/fB2.0, 0.5|fW/fC|1.7, and 0.5fW/fD1.8 (fW: focal length of the lens system, fA: focal length of the lens element A, fB: focal length of the lens element B, fC: focal length of the lens element C, fD: focal length of the lens element D) are satisfied.
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机译：单焦距透镜系统，至少包括正第一透镜单元和第二透镜单元，其中第一透镜单元包括第一子透镜单元E，第一子透镜单元E依次包括负透镜元件A，正透镜元件B，负透镜元件C和正透镜元件D，包括至少一个透镜元件的第二子透镜单元是第二透镜单元中的聚焦透镜单元，并且条件：1.0 <| f W / f < Sub> A | <2.2，0.5 <| f W / f B <2.0，0.5 <| f W / f < Sub> C | <1.7和0.5 W / f D <1.8（f W ：镜头的焦距镜头系统，f A ：镜头元件A的焦距，f B ：镜头元件B的焦距，f C ：焦距满足透镜元件C的长度，f D ：透镜元件D的焦距。
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