发明名称 IMAGING LENS AND IMAGING APPARATUS
摘要 An imaging lens includes, in order from the object side to the image side: a negative first lens; a positive second lens; a positive third lens; a negative fourth lens; a positive fifth lens; a positive sixth lens; and a negative seventh lens. In the imaging lens, Conditional Formula (1) related to the radius of curvature R2 of the surface of the first lens toward the image side and the focal length f of the entire lens system and Conditional Formula (2) related to the radius of curvature R3 of the surface of the second lens toward the object side and the focal length f of the entire lens system are satisfied.;1<R2/f  (1);4<R3/f<30  (2)
申请公布号 US2016320590(A1) 申请公布日期 2016.11.03
申请号 US201615136393 申请日期 2016.04.22
申请人 FUJIFILM Corporation 发明人 MORI Masao
分类号 G02B9/64;G02B13/00 主分类号 G02B9/64
代理机构 代理人
主权项 1. An imaging lens consisting of seven lenses, which are, in order from the object side to the image side: a first lens having a negative refractive power; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power; and Conditional Formulae (1) and (2) below being satisfied: 1<R2/f  (1)4<R3/f<30  (2) wherein R2 is the radius of curvature of the surface of the first lens toward the image side, f is the focal length of the entire lens system, and R3 is the radius of curvature of the surface of the second lens toward the object side.
地址 Tokyo JP