发明名称 Exposure control device
摘要 An exposure control device which permits exposure control either in an automatic mode or in a manual mode is arranged to smoothly perform the exposure control by holding exposure control information obtained immediately before change-over of the exposure control mode from one mode over to the other; and is provided with a correction circuit for uniformalizing an iris driving characteristic for the whole iris driving range by correcting the non-linearity of the characteristic.
申请公布号 US5428421(A) 申请公布日期 1995.06.27
申请号 US19940287463 申请日期 1994.08.08
申请人 CANON KABUSHIKI KAISHA 发明人 KAWAHARA, HIDEO;ARAI, HIDEYUKI
分类号 H04N5/232;H04N5/238;(IPC1-7):G03B7/08 主分类号 H04N5/232
代理机构 代理人
主权项
地址