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    • 3. 发明授权
    • Focal plane shutter
    • 焦平面快门
    • US4162840A
    • 1979-07-31
    • US888384
    • 1978-03-20
    • Osamu OobaKatsumi KanekoNobuyoshi InoueToshihisa Saito
    • Osamu OobaKatsumi KanekoNobuyoshi InoueToshihisa Saito
    • G03B9/36G03B9/18G03B9/40
    • G03B9/18
    • A focal plane shutter comprising a pair of upper arms rotatably supported on a shutter base plate and arranged with a spacing between them, a pair of lower arms overlapped respectively on said pair of upper arms with a spacing, three main shutter blades respectively supported by said upper arms so as to have overlapped portions even when developed between the respective pairs of upper arms and lower arms, and two auxiliary shutter blades respectively supported by the lower arms so as to overlap on the above mentioned overlapped portions when developed between the respective pairs of the upper arms and lower arms, in order to make the entire shutter device or particularly the dimensions in the vertical direction smaller. Tail portions are formed respectively at the free ends of the main shutter in the middle and the auxiliary shutter blades.
    • 一种焦平面快门,包括一对可旋转地支撑在快门基板上并以它们之间的间隔布置的上臂,一对下臂分别以间隔重叠在所述一对上臂上,三个主快门叶片分别由所述 即使在各对上臂和下臂之间显影时也具有重叠部分,以及分别由下臂支撑以便在上述重叠部分之间重叠的两个辅助快门叶片, 上臂和下臂,以使整个快门装置或特别是垂直方向的尺寸更小。 尾部分别形成在中间的主快门的自由端和辅助快门叶片上。
    • 4. 发明授权
    • Focal plane shutter
    • 焦平面快门
    • US4739355A
    • 1988-04-19
    • US96943
    • 1987-09-15
    • Toshihisa Saito
    • Toshihisa Saito
    • G03B9/18G03B9/40
    • G03B9/18
    • In order to enable to obtain stable exposure time even for successive photographing at high speeds and completely synchronize flashing without errors, the focal plane shutter comprising a front blade group and a rear blade group is adapted in such a manner that the rear blade group is returned to its start position (folded position) substantially at the final stage of the shutter cocking travel, a retaining lever for locking the rear balde group at the unfolded position (position covering the exposure aperture) during the shutter cocking operation functions as a brake member for the rear blade operating lever, and said focal plane shutter is equipped with a movable X-contact lever which is retained at a position apart from a fixed contact by a front blade actuating arm during and after the shutter cocking operation and maintained at a position apart from the fixed contact by an X-contact release lever operated by the rear blade operating lever for the time from completion of the exposure operation to completion of the former half of the shutter cocking travel.
    • 为了能够即使对高速连续拍摄也可以获得稳定的曝光时间,并且完全同步闪烁而没有错误,所以包括前叶片组和后叶片组的焦平面遮板适于使后叶片组返回 到达起始位置(折叠位置)时,在快门启动操作期间,用于将后秃秃组锁定在展开位置(覆盖曝光孔的位置)的保持杆用作制动构件 后刀片操作杆和所述焦平面快门配备有可移动的X接触杆,其在快门起动操作期间和之后被前刀片致动臂保持在与固定触点隔开的位置处并保持在分开的位置 从通过后刀片操作杆操作的X接触释放杆从固定接触开始完成曝光 重新操作完成前半部快门快门行程。
    • 7. 发明授权
    • Light guide plate and display device using the same
    • 导光板和显示装置使用相同
    • US08297824B2
    • 2012-10-30
    • US12629246
    • 2009-12-02
    • Toshihisa SaitoMasaru FurujikuTsuyoshi IshikawaEizaburo Higuchi
    • Toshihisa SaitoMasaru FurujikuTsuyoshi IshikawaEizaburo Higuchi
    • F21V7/04
    • G02B6/0018G02B6/0016G02B6/0041
    • To solve an uneven light quantity caused in a case where a light guide plate, in which light from a spot light source such as an LED enters an surface, changes by 90 degrees and exits the light to the outside, is used as a backlight. The light guide plate of the invention includes a light flux unifying region. The light flux unifying region has an incident surface, a first surface, and an exit surface. Light fluxes emitted from a light source enter the incident surface. The first surface is almost perpendicular to the incident surface and the intensity distribution of the light fluxes having entered is unified at the first surface. The exit surface is disposed almost parallel with the incident surface and the unified light fluxes exit from the exit surface. A boundary line between the incident surface and the first surface has a zigzag surface.
    • 为了解决在来自诸如LED的点光源的光进入表面的光的导光板变为90度并且将光离开到外部的情况下引起的不均匀的光量被用作背光。 本发明的导光板包括光通量区域。 光通量区域具有入射表面,第一表面和出射表面。 从光源发射的光通量进入入射面。 第一表面几乎垂直于入射表面,并且已经进入的光束的强度分布在第一表面是统一的。 出射面几乎与入射面平行,并且统一的光束从出射面出射。 入射表面和第一表面之间的边界线具有锯齿形表面。
    • 8. 发明授权
    • Focal plane shutter for cameras
    • 焦平面快门相机
    • US4994834A
    • 1991-02-19
    • US491115
    • 1990-03-09
    • Kenichi WatabeShigemi TakahashiToshihisa SaitoAkira Suzuki
    • Kenichi WatabeShigemi TakahashiToshihisa SaitoAkira Suzuki
    • G03B9/18
    • G03B9/18
    • The forcal plane shutter for cameras is equipped with a first release lever capable of retaining a rear blade group at position to close an exposure aperture, and a second release lever capable of maintaining a front blade group and the rear blade group at the unfolded position thereof and the folded position thereof respectively until the front blade group and the rear blade group are attracted and retained at the unfolded position and the folded position respectively securely with an electromagnetic device. The focal plane shutter is of a double light interruption type which has excellent response to the release signal and capable of assuring stable operations. The focal plane shutter further comprises a control means capable of retaining the first release lever in the released state thereof and can be set in a successive photographing mode accordingly.
    • 照相机的平面快门配备有能够将后刀片组保持在关闭曝光孔的位置的第一释放杆,以及能够将前刀片组和后刀片组保持在其展开位置的第二释放杆 并且其折叠位置分别直到前刀片组和后刀片组被分别用电磁装置吸引并保持在展开位置和折叠位置。 焦平面快门是双光中断型,对释放信号具有良好的响应并且能够确保稳定的操作。 焦平面快门还包括能够将第一释放杆保持在其释放状态的控制装置,并且可以相应地设置在连续的拍摄模式中。
    • 9. 发明授权
    • Light leakage preventing device for reflex cameras
    • 反光相机防漏灯装置
    • US4346974A
    • 1982-08-31
    • US264694
    • 1981-05-18
    • Toshihisa SaitoNobuyoshi Inoue
    • Toshihisa SaitoNobuyoshi Inoue
    • G03B19/12
    • G03B19/12
    • A light leakage preventing device for reflex cameras wherein a flexible light intercepting member is provided between the upper edge of a reflecting mirror and the vertical wall of a mirror box and a light intercepting member which can be brought to a light intercepting position in association with the movement of the reflecting mirror is provided between the lower edge of the reflecting mirror and the bottom wall of the mirror box so that, when the reflecting mirror is in a position in which it can conduct a light from an object to be photographed to a view finder, the light leakage from the upper edge and lower edge of the reflecting mirror to a film can be positively prevented.
    • 一种用于反光照相机的防漏光装置,其中在反射镜的上边缘和反射镜箱的垂直壁之间设置有柔性遮光构件,以及遮光构件,该遮光构件可与遮光构件相关联地进入遮光位置 反射镜的运动设置在反射镜的下边缘和反射镜盒的底壁之间,使得当反射镜处于可以将来自被拍摄对象的光传导到视图的位置时 可以可靠地防止从反射镜的上边缘和下边缘到膜的光泄漏。
    • 10. 发明授权
    • Device for automatically controlling diaphragm aperture
    • 自动控制光圈孔径的装置
    • US4210393A
    • 1980-07-01
    • US932476
    • 1978-08-10
    • Yasuo IshiguroKenji WakazonoToshihisa Saito
    • Yasuo IshiguroKenji WakazonoToshihisa Saito
    • G03B7/095G03B7/08
    • G03B7/095
    • An automatic diaphragm aperture controlling device which includes an exposure information pulse generation circuit to generate a pulse in a number corresponding to an aperture value to be controlled, the obtained pulses being based on exposure informations such as a scene brightness or the like. A counter circuit is provided for counting the output of the exposure information pulse generation circuit, together with an aperture value pulse generation circuit for generating pulses in a number corresponding to an aperture value of a diaphragm stopped down in association with a diaphragm drive, and diaphragm fixing means for fixing the diaphragm aperture which fixing means is actuated when an aperture value pulse number is coincident with an exposure information pulse number. The aperture value pulse generating circuit includes a light source, a photo-responsive element, and an intermittent light transmitter adapted for movement between the light source and the photoresponsive element in coupled relationship to the activation of the diaphragm.
    • 一种自动光圈孔径控制装置,其包括曝光信息脉冲发生电路,以产生与要控制的光圈值相对应的数字的脉冲,所获得的脉冲基于诸如场景亮度等的曝光信息。 提供一个计数器电路,用于对曝光信息脉冲产生电路的输出进行计数,以及孔径值脉冲发生电路,用于产生与隔膜驱动器相关联的隔膜的孔径值对应的脉冲数,以及隔膜 固定装置,用于固定光圈孔,当光圈值脉冲数与曝光信息脉冲数一致时,固定装置被致动。 孔径值脉冲发生电路包括光源,光响应元件和适于在光源和光响应元件之间以与振动膜的激活耦合的关系运动的间歇光发射器。