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    • 3. 发明授权
    • Drive system for electromagnetically driven shutter
    • 驱动电磁驱动系统
    • US4264162A
    • 1981-04-28
    • US48742
    • 1979-06-15
    • Ryoichi SuzukiYukio OgawaTakao KinoshitaTakashi Uchiyama
    • Ryoichi SuzukiYukio OgawaTakao KinoshitaTakashi Uchiyama
    • G03B7/081G03B7/083G03B7/087G03B9/42
    • G03B7/083
    • In the drive system disclosed, a first power source supplies a driving current to drive a moving member of an electromagnetic shutter driving device in one direction or in the reverse direction a second power source device consisting of a DC booster circuit, a capacitor, etc.; a photo-to-electric converter circuit discerns the brightness level of an object to be photographed and controls the outputs of the first and second power source devices to shift between these two outputs. An automatic change-over supplies the output of the second power source to the electromagnetic shutter driving device when the level of the output of the photo-to-electric converter circuit is equal to or above a predetermined level and supplies the output of the first power source to the electromagnetic shutter driving device when the output level of the photo-to-electric converter circuit is lower than the predetermined level.
    • 在所公开的驱动系统中,第一电源提供驱动电流以驱动电磁快门驱动装置的移动部件沿一个方向或相反方向由包括直流升压电路,电容器等的第二电源装置。 ; 光电转换器电路识别待拍摄对象的亮度级别,并控制第一和第二电源装置的输出在这两个输出之间移动。 当光电转换器电路的输出电平等于或高于预定电平时,自动切换将第二电源的输出提供给电磁快门驱动装置,并将第一功率的输出 当光电转换器电路的输出电平低于预定电平时,向电磁快门驱动装置供电。
    • 4. 发明授权
    • Liquid crystal display device for camera
    • 相机用液晶显示装置
    • US4452522A
    • 1984-06-05
    • US327617
    • 1981-12-04
    • Hiroyasu MurakamiTakashi UchiyamaRyoichi SuzukiShinji SakaiMasaharu KawamuraKikuo Momiyama
    • Hiroyasu MurakamiTakashi UchiyamaRyoichi SuzukiShinji SakaiMasaharu KawamuraKikuo Momiyama
    • G02F1/13G02F1/1335G03B17/20G03B17/18G03B13/02
    • G03B17/20
    • A liquid crystal display device for a camera includes a display member having liquid crystal material for providing a display of photographic information, and a focusing glass for forming an image of an object which is to be photographed. A mask is arranged to face the display member and the focusing glass, the mask including a first transparent part which faces a display part of the display member, and a second transparent part which faces the object image formed on the focusing glass. A light shading part is provided between the first and second transparent parts of the mask to shade an end part of the display member from light. The mask enables view finder optics provided in the camera to display a rectangular view field having straight sides to the camera user. This is accomplished by forming boundary lines between the first and second transparent parts and the light shading part of the mask, wherein each boundary line substantially forms an arc having a center located on a straight line which is perpendicular to one of a long and short side of the view field, and which line passes through the center of the view field. The arcuate boundary lines overcome distortion produced by the view finder optics so that they are visually recognized as being straight.
    • 用于照相机的液晶显示装置包括具有用于提供照相信息的显示的液晶材料的显示部件和用于形成要拍摄的被摄体的图像的聚焦玻璃。 掩模面向显示构件和聚焦玻璃,掩模包括面向显示构件的显示部分的第一透明部分和面对形成在聚焦玻璃上的物体图像的第二透明部分。 在荫罩的第一透明部分和第二透明部分之间设置遮光部分,以使显示部件的端部从光线上遮光。 该掩模使得相机中提供的取景器光学元件能够显示具有直视相机用户的矩形视野。 这是通过在第一和第二透明部分和掩模的遮光部分之间形成边界线来实现的,其中每个边界线基本上形成具有位于垂直于长边和短边之一的直线上的中心的圆弧 的视图字段,哪条线通过视图字段的中心。 弧形边界线克服了取景器光学器件产生的变形,使得它们被视觉上被认为是直的。