发明授权
US5148281A Iris stabilizer for automatic video camera 失效
用于自动摄像机的虹膜稳定器

Iris stabilizer for automatic video camera
摘要:
An iris control for a video camera which includes a manual adjuster and an automatic control. A video signal from an image pickup element is detected when it reaches a reference level. A unit to be activated for changing this iris is selectively changed-over between the manual and automatic control units, and the state of the iris is prevented from being changed when the unit to be activated is changed-over.
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