公开(公告)号：US06442343B2

公开(公告)日：2002-08-27

申请号：US09863295

申请日：2001-05-24

申请人： Nobuyuki Kameyama ,  Shigeki Takahara ,  Yuji Mikami

发明人： Nobuyuki Kameyama ,  Shigeki Takahara ,  Yuji Mikami

IPC分类号： G03B7085

CPC分类号： G03B7/085

摘要： A first stop plate with a small stop opening is disposed behind a taking lens, and a second stop plate with a middle stop opening is disposed between a first and second lens, which comprise the taking lens. Upon moving a changeover knob to an ON position, a flash unit and the second stop plate are actuated such that the middle stop opening is retracted from an photographic light path PL. The small stop opening is retracted from the photographic light path PL when subject luminance is less than a predetermined value. In high-luminance condition, the small stop opening and the middle stop opening are set on the photographic light path PL, and in middle-luminance condition, the small stop opening is retracted. In low-luminance condition, the middle stop opening is retracted by operation of the changeover knob, so only a large stop opening is set on the photographic light path PL.

摘要翻译： 具有小止动开口的第一止挡板设置在拍摄镜头的后面，并且具有中间止动开口的第二止挡板设置在包括拍摄镜头的第一和第二透镜之间。 在将转换旋钮移动到ON位置时，闪光单元和第二挡板被致动，使得中间停止开口从照相光路PL缩回。 当被摄体亮度小于预定值时，小的停止开口从摄影光路PL缩回。 在高亮度条件下，小的停止开口和中间的停止开口设置在照相光路PL上，而在中间亮度状态下，小的停止开口缩回。 在低亮度状态下，通过切换旋钮的操作使中间停止开口缩回，因此在摄影光路PL上仅设置大的停止开口。

公开(公告)号：US06493513B1

公开(公告)日：2002-12-10

申请号：US09699465

申请日：2000-10-31

申请人： Osamu Noguchi ,  Hirokazu Yokoo ,  Takashi Imamura ,  Yuji Mikami

发明人： Osamu Noguchi ,  Hirokazu Yokoo ,  Takashi Imamura ,  Yuji Mikami

IPC分类号： G03B7085

CPC分类号： G03B7/10 ,  G03B7/085 ,  G03B9/02

摘要： A shutter device for a camera includes a shutter blade for providing an exposure by opening/shutting a photographic light path, and a shutter drive lever for driving the shutter blade. The shutter device includes a shutter release button. A photometric switch is turned on in response to depression of the shutter release button. A photometric circuit is operated by turning on of the photometric switch, for measuring object brightness. An aperture stop changeover mechanism changes over an aperture stop of the photographic light path according to the photographic light path. A delay structure such as a delay lever detects completion of actuation of the aperture stop changeover mechanism and responsively moves the shutter drive lever.

摘要翻译： 用于相机的快门装置包括用于通过打开/关闭摄影光路提供曝光的快门叶片以及用于驱动快门叶片的快门驱动杆。 快门装置包括快门释放按钮。 响应于按下快门释放按钮，测光开关被打开。 通过打开测光开关来操作测光电路，以测量物体的亮度。 孔径光阑切换机构根据照相光路在摄影光路的孔径光阑上变化。 诸如延迟杆的延迟结构检测孔径光阑切换机构的致动的完成，并且响应地移动快门驱动杆。

公开(公告)号：US06701078B2

公开(公告)日：2004-03-02

申请号：US10166682

申请日：2002-06-12

申请人： Osamu Noguchi ,  Yuji Mikami

发明人： Osamu Noguchi ,  Yuji Mikami

IPC分类号： G03B7085

CPC分类号： G03B7/003 ,  G03B7/08 ,  G03B7/085 ,  G03B7/095 ,  G03B7/16 ,  G03B9/04 ,  G03B9/10

摘要： A camera includes a movable aperture stop plate, which changes over a light path of object light between plural stop states. A depressible shutter release button is provided. A shutter mechanism is released in response to depression of the shutter release button after a charging operation and changing over the movable aperture stop plate, to provide an exposure to the photo film. A photometric circuit including a CdS element measures object brightness adapted for changing over the movable aperture stop plate. A photometric switch includes first and second switch segments, is turned on when pressed, to supply the photometric circuit with power. A blocking pin blocks and turns off the first and second switch segments upon completion of the charging operation of the shutter mechanism, and comes away from the photometric switch when the shutter release button is depressed.

公开(公告)号：US06397011B1

公开(公告)日：2002-05-28

申请号：US09696245

申请日：2000-10-26

申请人： Katsumi Motomura ,  Hirofumi Katsura

发明人： Katsumi Motomura ,  Hirofumi Katsura

IPC分类号： G03B7085

CPC分类号： G03B7/085

摘要： A first light guide and a second light guide are attached to a flash charge switch. Each light guide is arranged in a direction where the flash charge switch is slid. If the flash charge switch is in an OFF position, the first light guide transmits light from a photometric window to a photo sensor. If the flash charge switch is in an ON position, the second light guide transmits the light through the photometric window to the photo sensor. As the first light guide has a short distance from an incident end to the photometric window, the incident end has a large incident angle and brighter light is transmitted to the photosensor. As the second light guide has a long distance from the incident end to the photometric window, weak light is transmitted to the photo sensor. When an output signal of the photo sensor is above a predetermined value, a solenoid is activated to set a stop plate on a photographic light path. The stop plate is formed with a small stop aperture. If the stop plate is retired from the photographic light path, a normal stop aperture having a larger size than that of the small stop aperture is used. A flash photography and a daylight photography are different from each other in type of the light guides being used, thus a threshold of subject brightness as a reference point for setting the small stop aperture depends upon that.

摘要翻译： 第一光导和第二光导附着到闪光充电开关。 每个光导布置在闪光充电开关滑动的方向上。 如果闪光灯充电开关处于关闭位置，则第一光导将光从光度测量窗口传输到光电传感器。 如果闪光灯充电开关处于ON位置，则第二光导通过光度测量窗将光传输到光传感器。 由于第一光导从入射端到测光窗的距离很短，所以入射端具有大的入射角，并且较亮的光被传输到光电传感器。 由于第二光导从入射端到测光窗有很长的距离，所以弱光被传送到光传感器。 当光传感器的输出信号高于预定值时，激活螺线管以将停止板设置在照相光路上。 止动板形成有小的止动孔。 如果停止板从摄影光路中退出，则使用具有比小停止孔径大的尺寸的正常停止孔。 闪光摄影和日光摄影在所使用的光导类型中彼此不同，因此作为设置小停止孔径的参考点的被摄体亮度的阈值取决于该阈值。