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1. 发明授权

US4065777A Photometric apparatus for single lens reflex camera 失效
标题翻译：单镜反光相机光度测量仪
公开(公告)号：US4065777A
公开(公告)日：1977-12-27
申请号：US717089
申请日：1976-08-24
申请人： Yoshihisa Maitani , Kunio Shimoyama , Muneaki Yoshida , Akihiko Hashimoto , Masahiro Kitagawa
发明人： Yoshihisa Maitani , Kunio Shimoyama , Muneaki Yoshida , Akihiko Hashimoto , Masahiro Kitagawa
IPC分类号： G03B7/083 , G03B7/099 , G03B7/08
CPC分类号： G03B7/083 , G03B7/09974
摘要： A photometric apparatus for single lens reflex camera and of the type in which an exposure value is determined by photometry of light which is transmitted through a photographic optical system and is reflected by at least one of the surfaces of a shutter blind and a film, said apparatus comprising a photoelectric transducer element for receiving light reflected by at least one of the surfaces of a shutter blind and a film, and an operational amplifier for biasing the photoelectric transducer element to maintain the voltage applied thereacross substantially null, thereby enabling a photometric output of the photoelectric transducer element to be effectively derived even when the amount of light received is minimal. The shutter blind is provided with a surface upon which at least two portions thereof have different coefficients of reflectivity to reduce adverse effects of reflected light upon the desired exposure period.
摘要翻译：一种用于单镜头反光照相机的测光装置，其中曝光值由通过照相光学系统透射并由快门帘和薄膜的至少一个表面反射的光的测光确定的类型，所述光测量装置该装置包括用于接收由快门遮罩和薄膜的至少一个表面反射的光的光电换能器元件和用于偏置光电换能器元件的运算放大器，以保持其上施加的电压基本上为零，从而使得能够进行光度输出即使当接收到的光量很小时，光电传感器元件也被有效地导出。百叶窗具有表面，在该表面上，其至少两部分具有不同的反射系数，以减少反射光对所需曝光周期的不利影响。

2. 发明授权

US3994001A Photometric apparatus for single lens reflex camera 失效
标题翻译：单镜反光相机光度测量仪
公开(公告)号：US3994001A
公开(公告)日：1976-11-23
申请号：US505956
申请日：1974-09-13
申请人： Yoshihisa Maitani , Kunio Shimoyama , Muneaki Yoshida , Akihiko Hashimoto , Masahiro Kitagawa
发明人： Yoshihisa Maitani , Kunio Shimoyama , Muneaki Yoshida , Akihiko Hashimoto , Masahiro Kitagawa
IPC分类号： G01J1/44 , G03B7/083 , G03B7/099 , G03B7/0997 , G03B9/28 , G03B9/32 , G03B9/62 , G03B7/08
CPC分类号： G03B9/32 , G03B7/083 , G03B7/09974 , G03B7/09976 , G03B9/62
摘要： A photometric apparatus for single lens reflex camera and of the type in which an exposure value is determined by photometry of light which is transmitted through a photographic optical system and is reflected by at least one of the surfaces of a shutter blind and a film, said apparatus comprising a photoelectric transducer element for receiving light reflected by at least one of the surfaces of a shutter blind and a film, and an operational amplifier for biasing the photoelectric transducer element to maintain the voltage applied thereacross substantially null, thereby enabling a photometric output of the photoelectric transducer element to be effectively derived even when the amount of light received is minimal.
摘要翻译：一种用于单镜头反光照相机的测光装置，其中曝光值由通过照相光学系统透射并由快门帘和薄膜的至少一个表面反射的光的测光确定的类型，所述光测量装置该装置包括用于接收由快门遮罩和薄膜的至少一个表面反射的光的光电换能器元件和用于偏置光电换能器元件的运算放大器，以保持其上施加的电压基本上为零，从而使得能够进行光度输出即使当接收到的光量很小时，光电传感器元件也被有效地导出。

3. 发明授权

US4104654A Photometric apparatus for single lens reflex camera 失效
标题翻译：单镜反光相机光度测量仪
公开(公告)号：US4104654A
公开(公告)日：1978-08-01
申请号：US717087
申请日：1976-08-24
申请人： Yoshihisa Maitani , Kunio Shimoyama , Muneaki Yoshida , Akihiko Hashimoto , Masahiro Kitagawa
发明人： Yoshihisa Maitani , Kunio Shimoyama , Muneaki Yoshida , Akihiko Hashimoto , Masahiro Kitagawa
IPC分类号： G03B7/083 , G03B7/099 , G03B7/08
CPC分类号： G03B7/083 , G03B7/09974 , G03B7/09976
摘要： A photometric apparatus for single lens reflex camera and of the type in which an exposure value is determined by photometry of light which is transmitted through a photographic optical system and is reflected by at least one of the surfaces of a shutter blind and a film, said apparatus comprising a photoelectric transducer element for receiving light reflected by at least one of the surfaces of a shutter blind and a film, and an operational amplifier for biasing the photoelectric transducer element to maintain the voltage applied thereacross substantially null, thereby enabling a photometric output of the photoelectric transducer element to be effectively derived even when the amount of light received is minimal. A second photoelectric transducer element is provided for receiving reflected light from the reflecting mirror that is adapted to be switched between the viewfinder light path and the photographic light path and display means for displaying the operation of the shutter dependent upon the light which is incident upon the aforesaid second transducer element.
摘要翻译：一种用于单镜头反光照相机的测光装置，其中曝光值由通过照相光学系统透射并由快门帘和薄膜的至少一个表面反射的光的测光确定的类型，所述光测量装置该装置包括用于接收由快门遮罩和薄膜的至少一个表面反射的光的光电换能器元件和用于偏置光电换能器元件的运算放大器，以保持其上施加的电压基本上为零，从而使得能够进行光度输出即使当接收到的光量很小时，光电传感器元件也被有效地导出。第二光电换能器元件被提供用于接收来自反射镜的反射光，其适于在取景器光路和摄影光路之间切换，以及显示装置，用于显示取决于入射在该光源上的光的快门的操作上述第二换能器元件。

4. 发明授权

US4064517A Photometric apparatus for single lens reflex camera 失效
标题翻译：单镜反光相机光度测量仪
公开(公告)号：US4064517A
公开(公告)日：1977-12-20
申请号：US717088
申请日：1976-08-24
申请人： Yoshihisa Maitani , Kunio Shimoyama , Muneaki Yoshida , Akihiko Hashimoto , Masahiro Kitagawa
发明人： Yoshihisa Maitani , Kunio Shimoyama , Muneaki Yoshida , Akihiko Hashimoto , Masahiro Kitagawa
IPC分类号： G03B7/083 , G03B7/099 , G03B7/08 , G03B17/20
CPC分类号： G03B7/083 , G03B7/09974 , G03B7/09976
摘要： A photometric apparatus for single lens reflex camera and of the type in which an exposure value is determined by photometry of light which is transmitted through a photographic optical system and is reflected by at least one of the surfaces of a shutter blind and a film, said apparatus comprising a photoelectric transducer element for receiving light reflected by at least one of the surfaces of a shutter blind and a film, and an operational amplifier for biasing the photoelectric transducer element to maintain the voltage applied thereacross substantially null, thereby enabling a photometric output of the photoelectric transducer element to be effectively derived even when the amount of light received is minimal. The photometric apparatus, including a photoelectric transducer element, a photometry switch and associated circuitry are mounted upon a printed circuit board mounted within the camera to position the transducer element to receive reflected light from the film or the shutter.
摘要翻译：一种用于单镜头反光照相机的测光装置，其中曝光值由通过照相光学系统透射并由快门帘和薄膜的至少一个表面反射的光的测光确定的类型，所述光测量装置该装置包括用于接收由快门遮罩和薄膜的至少一个表面反射的光的光电换能器元件和用于偏置光电换能器元件的运算放大器，以保持其上施加的电压基本上为零，从而使得能够进行光度输出即使当接收到的光量很小时，光电传感器元件也被有效地导出。包括光电换能器元件，测光开关和相关电路的测光装置安装在安装在相机内的印刷电路板上，以定位换能器元件以接收来自胶片或快门的反射光。

5. 发明授权

US3987468A Apparatus for synchronizing an electronic flash with a camera 失效
标题翻译：用于使电子闪光灯与相机同步的装置
公开(公告)号：US3987468A
公开(公告)日：1976-10-19
申请号：US504856
申请日：1974-09-11
申请人： Soichiro Matsuzaki , Yoshihisa Maitani , Kunio Shimoyama , Isao Kondo
发明人： Soichiro Matsuzaki , Yoshihisa Maitani , Kunio Shimoyama , Isao Kondo
IPC分类号： G03B15/05 , G03B15/03
CPC分类号： G03B15/05 , G03B2215/05
摘要： An apparatus for activating an electronic flash by operating an X contact when the first blind of a focal plane shutter has terminated its movement to fully open an exposure light path, irrespective of an exposure period establishing operation. Where an electronic focal plane shutter is combined with an auto-strobo, a photometric circuit within the electronic circuit is used to measure the radiation from the auto-strobo, and to control the amount of exposure to a proper value. Where a proper amount of exposure is available by natural light when the shutter is opened, a closing movement of the shutter is utilized to cause the trigger capacitor of the electronic flash to be discharged, thereby disabling the illumination of the electronic flash.
摘要翻译：无论曝光周期建立操作如何，通过在焦平面快门的第一盲孔终止其移动以完全打开曝光光路的情况下通过操作X触点来激活电子闪光灯的装置。在电子焦平面快门与自动频闪组合的情况下，电子电路内的测光电路用于测量来自自动频闪的辐射，并将曝光量控制在合适的值。当快门打开时，通过自然光可以获得适当的曝光量，利用快门的关闭运动使电子闪光灯的触发电容器放电，从而禁止电子闪光灯的照明。

6. 发明授权

US4074290A Apparatus for synchronizing an electronic flash with a camera 失效
标题翻译：用于与相机同步电子闪光灯的装置
公开(公告)号：US4074290A
公开(公告)日：1978-02-14
申请号：US631935
申请日：1975-11-14
申请人： Soichiro Matsuzaki , Yoshihisa Maitani , Kunio Shimoyama , Isao Kondo
发明人： Soichiro Matsuzaki , Yoshihisa Maitani , Kunio Shimoyama , Isao Kondo
IPC分类号： G03B15/05 , G03B7/16
CPC分类号： G03B15/05 , G03B2215/05
摘要： An apparatus for activating an electronic flash by operating an X contact when the first blind of a focal plane shutter has terminated its movement to fully open an exposure light path, irrespective of an exposure period establishing operation. Where an electronic focal plane shutter is combined with an auto-strobo, a photometric circuit within the electronic circuit is used to measure the radiation from the auto-strobo, and to control the amount of exposure to a proper value. Where a proper amount of exposure is available by natural light when the shutter is opened, a closing movement of the shutter is utilized to cause the trigger capacitor of the electronic flash to be discharged, thereby disabling the illumination of the electronic flash.

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