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1. 发明公开

EP0273394A3 Lens shutter using an electrostrictive strain element as driving source means 失效
标题翻译：使用电致应变元件作为驱动源的镜头切换器
公开(公告)号：EP0273394A3
公开(公告)日：1989-06-14
申请号：EP87119144.1
申请日：1987-12-23
申请人： Copal Company Ltd.
发明人： Suzuki, Akira , Oe, Haruki , Touma, Kiyoshi
IPC分类号： G03B9/14
CPC分类号： G03B9/14
摘要： A lens shutter comprises a shutter blades opening and closing lever (4) and an electrostrictive strain element (5) driving the lever (4). The arrangement being such that inertia forces acting on said lever (4) through engagement with said element (5) and vice versa are counterbalanced by each other, in order to eliminate variations of exposure caused by various positions of a camera. The basic portion of the electrostrictive strain element (5) is secured to a retaining member (6) supported rotatably on a shutter base plate (1) and the retaining member (6) may well be biased by a spring (8) to increase the inertia force of the electrostrictive strain element (5). Thereby, even if a shock is applied to the shutter from the outside, the shutter blades (2, 2ʹ) are not inadvertently opened and closed. The rotation of the retaining member (6) to rotate the opening and closing lever (4) in a wrong direction is prevented by an eccentric pin (9).

2. 发明公开

EP0273394A2 Lens shutter using an electrostrictive strain element as driving source means 失效
标题翻译： Verschluss，der als Antriebsquelle ein elektrostriktives Spannelement benutzt。
公开(公告)号：EP0273394A2
公开(公告)日：1988-07-06
申请号：EP87119144.1
申请日：1987-12-23
申请人： Copal Company Ltd.
发明人： Suzuki, Akira , Oe, Haruki , Touma, Kiyoshi
IPC分类号： G03B9/14
CPC分类号： G03B9/14
摘要： A lens shutter comprises a shutter blades opening and closing lever (4) and an electrostrictive strain element (5) driving the lever (4). The arrangement being such that inertia forces acting on said lever (4) through engagement with said element (5) and vice versa are counterbalanced by each other, in order to eliminate variations of exposure caused by various positions of a camera. The basic portion of the electrostrictive strain element (5) is secured to a retaining member (6) supported rotatably on a shutter base plate (1) and the retaining member (6) may well be biased by a spring (8) to increase the inertia force of the electrostrictive strain element (5). Thereby, even if a shock is applied to the shutter from the outside, the shutter blades (2, 2ʹ) are not inadvertently opened and closed. The rotation of the retaining member (6) to rotate the opening and closing lever (4) in a wrong direction is prevented by an eccentric pin (9).
摘要翻译：透镜挡板包括快门叶片打开和关闭杆（4）和驱动杆（4）的电致伸缩应变元件（5）。该布置使得通过与所述元件（5）接合而作用在所述杆（4）上的惯性力彼此抵消，以便消除由相机的各种位置引起的曝光的变化。电致伸缩应变元件（5）的基本部分被固定到可旋转地支撑在闸板基板（1）上的保持构件（6）上，并且保持构件（6）可以很好地被弹簧（8）偏置，以增加电致伸缩应变元件（5）的惯性力。因此，即使从外部对快门施加冲击，快门叶片（2,2'）也不会被无意地打开和关闭。通过偏心销（9）防止保持构件（6）沿错误的方向旋转开关杆（4）的旋转。

3. 发明授权

EP0273394B1 Lens shutter using an electrostrictive strain element as driving source means 失效
标题翻译：使用电致应变元件作为驱动源的透镜切换器
公开(公告)号：EP0273394B1
公开(公告)日：1993-05-05
申请号：EP87119144.1
申请日：1987-12-23
申请人： Copal Company Ltd.
发明人： Suzuki, Akira , Oe, Haruki , Touma, Kiyoshi
IPC分类号： G03B9/14
CPC分类号： G03B9/14

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