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21. 发明授权

US06565270B2 Light quantity controller and camera system including the same 失效
标题翻译：光量控制器和相机系统包括相同
公开(公告)号：US06565270B2
公开(公告)日：2003-05-20
申请号：US09950619
申请日：2001-09-13
申请人： Hiroaki Naganuma
发明人： Hiroaki Naganuma
IPC分类号： G03B908
CPC分类号： H04N5/2254 , G03B9/08 , H04N5/238
摘要： A light quantity control unit includes a base plate having an aperture forming an optical axis; a blade member for regulating a condition of the aperture; a coil and a magnet rotor polarized with two magnetic poles, formed on the base plate; and a pair of magnetic force inducing members. Each member has a base end part, and a leading end part extending from the base end part perpendicular to the optical axis and having an equal thickness throughout an entire length thereof. The leading end parts surround the magnet rotor at a middle area thereof and have magnetic poles for rotating the magnet rotor. A regulating device is formed at the base plate for regulating a rotation of the magnet rotor to swing at a predetermined angle between the magnetic poles formed in the magnetic force inducing members.
摘要翻译：光量控制单元包括具有形成光轴的孔的基板; 用于调节所述孔的状态的叶片构件; 在基板上形成用两个磁极极化的线圈和磁体转子; 和一对磁力诱导构件。每个构件具有基端部和从基端部垂直于光轴延伸并且在其整个长度上具有相同厚度的前端部。前端部分在其中间区域围绕磁体转子，并具有用于旋转磁体转子的磁极。调节装置形成在基板上，用于调节磁体转子的转动，以形成在磁力诱导构件中的磁极之间的预定角度摆动。

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