发明名称 Zoom Lens System, Imaging Device and Camera
摘要 A zoom lens system, in order from an object side to an image side, comprising: a first lens unit having negative optical power; a second lens unit having positive optical power; a third lens unit having negative optical power; and a subsequent lens unit containing at least a fourth lens unit, wherein in zooming from a wide-angle limit to a telephoto limit at the time of image taking, intervals between the individual lens units vary and the fourth lens unit is fixed relative to an image surface, and wherein the conditions: vd4G<40 and &omega;w>34 (vd4G: an Abbe number to the d-line of a lens element constituting the fourth lens unit, &omega;w: a half view angle at a wide-angle limit) are satisfied; an imaging device; and a camera are provided.
申请公布号 US2012229902(A1) 申请公布日期 2012.09.13
申请号 US201213413673 申请日期 2012.03.07
申请人 MATSUMURA YOSHIO;PANASONIC CORPORATION 发明人 MATSUMURA YOSHIO
分类号 G02B15/14 主分类号 G02B15/14
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