发明授权
US07817356B2 Imaging lens, and imaging apparatus and mobile terminal apparatus using the same
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成像透镜,成像装置和使用其的移动终端装置
- 专利标题: Imaging lens, and imaging apparatus and mobile terminal apparatus using the same
- 专利标题(中): 成像透镜,成像装置和使用其的移动终端装置
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申请号: US12520835申请日: 2007-12-21
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公开(公告)号: US07817356B2公开(公告)日: 2010-10-19
- 发明人: Junichi Nio
- 申请人: Junichi Nio
- 申请人地址: JP
- 专利权人: SEIKO Precision Inc.
- 当前专利权人: SEIKO Precision Inc.
- 当前专利权人地址: JP
- 代理机构: Townsend and Townsend and Crew LLP
- 优先权: JP2006-346287 20061222
- 国际申请: PCT/JP2007/074734 WO 20071221
- 国际公布: WO2008/078709 WO 20080703
- 主分类号: G02B9/34
- IPC分类号: G02B9/34
摘要:
An imaging lens comprises a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4), which are arranged in ascending sequence, starting from the lens nearest to the object. The first lens (L1) has a double-convex shape and positive refractive power. The second lens (L2) has a double-concave shape and negative refractive power. The third lens (L3) has a meniscus shape with its convex surface facing an image plane, and has positive refractive power. The fourth lens (L4) has a meniscus shape with its convex surface facing the object. A chromatic aberration occurred in the first lens (L1) is corrected by the second lens (L2). A chromatic aberration occurred in the third lens (L3) is corrected by the fourth lens (L4).
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