发明授权
US07973830B2 Imaging apparatus and exposure control method 有权
成像设备和曝光控制方法

  • 专利标题: Imaging apparatus and exposure control method
  • 专利标题(中): 成像设备和曝光控制方法
  • 申请号: US12161918
    申请日: 2007-03-07
  • 公开(公告)号: US07973830B2
    公开(公告)日: 2011-07-05
  • 发明人: Satoshi Okamoto
  • 申请人: Satoshi Okamoto
  • 申请人地址: JP Tokyo
  • 专利权人: FUJIFILM Corporation
  • 当前专利权人: FUJIFILM Corporation
  • 当前专利权人地址: JP Tokyo
  • 代理机构: Sughrue Mion, PLLC
  • 优先权: JP2006-064577 20060309
  • 国际申请: PCT/JP2007/055018 WO 20070307
  • 国际公布: WO2007/105745 WO 20070920
  • 主分类号: H04N5/235
  • IPC分类号: H04N5/235
Imaging apparatus and exposure control method
摘要:
In a digital camera (10), an imaging sensitivity setting circuit (61) selects a pair of distance range selection parameters “A” and “B” according to a zoom position of a zoom lens (41), to compare an in-focus position of a focusing lens (43) with these parameters “A” and “B”, wherein the parameters “A” and “B” correspond to a farther distance and a nearer distance respectively. If the in-focus position is farther than the parameter “A”, the imaging sensitivity is set to a high level. If the in-focus position is in between these parameters “A” and “B”, the imaging sensitivity is set to a middle level. If the in-focus position is nearer than the parameter “B”, the imaging sensitivity is set to a low level. Based on the set imaging sensitivity level and a measured subject brightness value, a system controller (41) controls the exposure value and the flashlight volume.
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