发明授权
US4247762A Contrast sensing apparatus for automatic focus systems 失效
自动对焦系统对比度感应装置

  • 专利标题: Contrast sensing apparatus for automatic focus systems
  • 专利标题(中): 自动对焦系统对比度感应装置
  • 申请号: US965361
    申请日: 1978-11-30
  • 公开(公告)号: US4247762A
    公开(公告)日: 1981-01-27
  • 发明人: Dennis J. Wilwerding
  • 申请人: Dennis J. Wilwerding
  • 申请人地址: MN Minneapolis
  • 专利权人: Honeywell Inc.
  • 当前专利权人: Honeywell Inc.
  • 当前专利权人地址: MN Minneapolis
  • 主分类号: G02B7/30
  • IPC分类号: G02B7/30 G01J1/36
Contrast sensing apparatus for automatic focus systems
摘要:
An improved automatic focus system wherein circuitry is provided to inhibit the focusing function when the scene being viewed provides too little contrast for satisfactory operation.
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