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公开(公告)号：US07450170B2
公开(公告)日：2008-11-11
申请号：US10892234
申请日：2004-07-16
CPC分类号： H04N5/238
摘要： When a brightness level of an object is below a predetermined level, an ND filter is removed from an iris opening to fully open the iris opening, and when the brightness level of the object is above a predetermined level, the ND filter is placed to the iris opening to fully close the iris opening. When the ND filter is moved between the fully-opened state and the fully-closed state, an exposure change amount corresponding to an amount offsetting the exposure change amount due to a state transition is generated by controlling iris blades.
摘要翻译： 当物体的亮度水平低于预定水平时，从虹膜开口去除ND滤光片以完全打开虹膜开口，并且当物体的亮度水平高于预定水平时，将ND滤光器放置在 虹膜开放以完全关闭虹膜开口。 当ND滤光器在完全打开状态和完全关闭状态之间移动时，通过控制虹膜叶片来产生对应于由于状态转变而抵消曝光改变量的量的曝光改变量。
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公开(公告)号：US20050046737A1
公开(公告)日：2005-03-03
申请号：US10892234
申请日：2004-07-16
CPC分类号： H04N5/238
摘要： When a brightness level of an object is below a predetermined level, an ND filter is removed from an iris opening to fully open the iris opening, and when the brightness level of the object is above a predetermined level, the ND filter is placed to the iris opening to fully close the iris opening. When the ND filter is moved between the fully-opened state and the fully-closed state, an exposure change amount corresponding to an amount offsetting the exposure change amount due to a state transition is generated by controlling iris blades.
摘要翻译： 当物体的亮度水平低于预定水平时，从虹膜开口去除ND滤光片以完全打开虹膜开口，并且当物体的亮度水平高于预定水平时，将ND滤光器放置在 虹膜开放以完全关闭虹膜开口。 当ND滤光器在完全打开状态和完全关闭状态之间移动时，通过控制虹膜叶片来产生对应于由于状态转变而抵消曝光改变量的量的曝光改变量。
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