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.
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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 |
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代理人 |
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主权项 |
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地址 |
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