发明名称 接眼レンズ及び光学機器
摘要 There are provided an ocular lens in which aberrations are favorably corrected across a sufficiently wide angle of view and a lens diameter is suppressed from increasing with a sufficient eye relief attained and without a total length being long, and an optical apparatus including the ocular lens. An ocular lens 3 used for an optical apparatus such as a telescope optical system TS includes: in order from an object side, a first lens group G1 including a first lens component G1A having negative refractive power and having a concave surface facing a viewer's eye side, a second lens component G1B in a meniscus shape having a convex surface facing the object side, and a third lens component G1C having positive refractive power; a second lens group G2 having a lens component having a convex surface facing the viewer's eye side; a third lens group G3 having positive refractive power. An object side focal plane of the third lens group G3 is positioned between the second lens group G2 and the third lens group G3.
申请公布号 JP5912769(B2) 申请公布日期 2016.04.27
申请号 JP20120079816 申请日期 2012.03.30
申请人 株式会社 ニコンビジョン 发明人 福本 哲
分类号 G02B25/00;G02B13/18;G02B23/02 主分类号 G02B25/00
代理机构 代理人
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