发明授权
US07742243B2 Projection lens with high resolution and reduced overall length 失效
具有高分辨率和缩短整体长度的投影镜头

  • 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
  • 申请号: US11952974
    申请日: 2007-12-07
  • 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
Projection lens with high resolution and reduced overall length
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
信息查询
0/0