发明授权
- 专利标题: Projection lens with high resolution and reduced overall length
- 专利标题(中): 具有高分辨率和缩短整体长度的投影镜头
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申请号: US11952974申请日: 2007-12-07
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公开(公告)号: US07742243B2公开(公告)日: 2010-06-22
- 发明人: Chun-Ling Lin
- 申请人: Chun-Ling Lin
- 申请人地址: TW Tu-Cheng, Taipei Hsien
- 专利权人: Hon Hai Precision Industry Co., Ltd.
- 当前专利权人: Hon Hai Precision Industry Co., Ltd.
- 当前专利权人地址: TW Tu-Cheng, Taipei Hsien
- 代理商 Zhigang Ma
- 优先权: CN200710201467 20070824
- 主分类号: G02B9/04
- IPC分类号: G02B9/04
摘要:
An exemplary projection lens includes, in this order from the magnification side to the minification side thereof, a negative lens group of negative fraction power, and a positive lens group of positive fraction power. The projection lens satisfies the formulas of: −2.5
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