发明名称 |
Image pickup lens, image pickup device, and mobile terminal device |
摘要 |
An image pickup lens, comprises sequentially from an object side: an aperture stop, a first lens being a positive meniscus lens which has a convex surface at the object side and a concave surface at an image side opposite to the object side, and a second lens having a concave surface at the object side and an image side surface whose radius of curvature on an paraxial region is infinite or a negative value, wherein the first lens is the second lens and the image side surface of the second lens includes an aspheric surface to make a positive power strong toward a lens peripheral region, and wherein the image pickup lens is made to satisfy the following conditional formulas: 1.55<n1<1.80  (1) 0.4<D3/f<0.6  (2) 40.0<&ngr;2<90.0  (3).
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申请公布号 |
US7948689(B2) |
申请公布日期 |
2011.05.24 |
申请号 |
US20100821988 |
申请日期 |
2010.06.23 |
申请人 |
KONICA MINOLTA OPTO, INC. |
发明人 |
FUKUTA YASUNARI;SATO MASAE;KAWASAKI TAKASHI;MATSUI KAZUKI |
分类号 |
G02B13/18;G02B9/04 |
主分类号 |
G02B13/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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