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公开(公告)号：US4542971A
公开(公告)日：1985-09-24
申请号：US656410
申请日：1984-10-01
Applicant: Saburo Numata
Inventor： Saburo Numata
CPC classification number: G02B7/32
Abstract: An automatic focusing apparatus of the type having an infrared light source for illuminating a subject wherein a position sensor for sensing infrared light reflected from the subject passing through two different portions of the picture-taking lens is provided to generate signals which represent condition of the picture-taking lens, that is, whether an image of the subject is in the best focus, front focus or rear focus. The position sensor comprises two position-sensing devices. By detecting the difference between the outputs from these two position-sensing devices, the condition of the picture-taking lens can be determined. A single position-sensing device can be used if AC signals are generated by a mechanical chopper in the forward position therefrom.
Abstract translation: 一种具有用于照射被摄体的红外光源的自动对焦装置，其中设置有用于感测从通过摄影镜头的两个不同部分的被摄体反射的红外光的位置传感器，以产生表示图像条件的信号 拍摄镜头，即拍摄对象的图像是否处于最佳对焦，前焦距或后焦距。 位置传感器包括两个位置感测装置。 通过检测来自这两个位置感测装置的输出之间的差异，可以确定摄像镜头的状况。 如果交流信号由机械斩波器在其前进位置产生，则可以使用单个位置感测装置。
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公开(公告)号：US4336481A
公开(公告)日：1982-06-22
申请号：US201124
申请日：1980-10-27
Applicant: Saburo Numata
Inventor： Saburo Numata
CPC classification number: G03B15/05 , H05B41/325
Abstract: The amount of light to be produced in an electronic flash lamp apparatus, which is required to take a picture under proper exposure conditions, is predetermined depending on the object distance, the lens diaphragm aperture and the film speed. The actual amount of light produced in the electronic flash lamp apparatus is given as the integrated voltage of a portion only, of the discharge current that flows through the flash discharge tube. The electronic flash lamp apparatus automatically terminates the flash, when agreement between the predetermined and actual amounts of light is reached.
Abstract translation: 在适当的曝光条件下拍摄照片所需要的电子闪光灯装置中产生的光量根据物体距离，透镜光阑孔径和胶片速度而预先确定。 在电子闪光灯装置中产生的实际光量仅作为流过闪光放电管的放电电流的一部分的积分电压。 当达到预定光量与实际光量之间的一致时，电子闪光灯装置自动终止闪光。
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公开(公告)号：US4232955A
公开(公告)日：1980-11-11
申请号：US71257
申请日：1979-08-30
Applicant: Saburo Numata , Shinichiro Fujino
Inventor： Saburo Numata , Shinichiro Fujino
CPC classification number: G03B7/083
Abstract: In a photographic camera provided with an exposure control circuit including a light measuring circuit which measures scene brightness and a memory circuit which memorizes the output of the light measuring circuit, a switching circuit is connected between the light measuring circuit and the memory circuit. The switching circuit is connected with a time constant circuit so that the switching circuit may be turned off to lock the memory memorized in the memory circuit when the time determined by the time constant circuit has lapsed since the power source is turned on. In a preferred embodiment, the time constant circuit is further connected with the output of the light measuring circuit so that the time determined by the time constant circuit is varied in accordance with the scene brightness.
Abstract translation: 在设置有包括测量场景亮度的光测量电路的曝光控制电路的照相机和存储光测量电路的输出的存储电路中，切换电路连接在光测量电路和存储电路之间。 开关电路与时间常数电路连接，使得当电源接通时，当由时间常数电路确定的时间过去时，切换电路可能被关闭以锁定存储电路中存储的存储器。 在优选实施例中，时间常数电路还与光测量电路的输出连接，使得由时间常数电路确定的时间根据场景亮度而变化。
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公开(公告)号：US4079269A
公开(公告)日：1978-03-14
申请号：US679372
申请日：1976-04-22
Applicant: Saburo Numata , Shinichiro Fujino
Inventor： Saburo Numata , Shinichiro Fujino
Abstract: A switch means for electrically operating a device in a photographic camera is composed of a mechanical switch and a semiconductor switching element connected with the mechanical switch. The mechanical switch has a pair of contacts made of resilient conductive material and increases its conductivity as the pressure applied thereto increases. By the increase of the conductivity of the mechanical switch an input voltage supplied to the semiconductor switching element is raised and the switching element is turned on when the input voltage has reached a predetermined level. Thus, chattering and large consumption of electric power are prevented.
Abstract translation: 用于电摄相机中的装置的开关装置由机械开关和与机械开关连接的半导体开关元件组成。 机械开关具有由弹性导电材料制成的一对触点，并随着施加的压力而增加其导电性。 通过机械开关的电导率的增加，提供给半导体开关元件的输入电压升高，并且当输入电压达到预定电平时开关元件导通。 因此，防止颤动和大量的电力消耗。
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公开(公告)号：US4070682A
公开(公告)日：1978-01-24
申请号：US701076
申请日：1976-06-30
Applicant: Saburo Numata , Shinichiro Fujino
Inventor： Saburo Numata , Shinichiro Fujino
CPC classification number: G03B7/083
Abstract: An exposure time control circuit for a camera includes a level selecting circuit between a light measuring circuit and a memory circuit to have a selected output memorized in the memory circuit. The level selecting circuit is provided with two inputs, one of which is the output of the light measuring circuit indicative of the scene brightness and the other of which is the output of a maximum exposure time output source indicative of the maximum exposure time acceptable to the camera. The memory circuit memorizes the output selected by the level selecting circuit which output indicates a shorter exposure time between the two.
Abstract translation: 照相机的曝光时间控制电路包括在光测量电路和存储器电路之间的电平选择电路，以使存储在存储器电路中的选择输出。 电平选择电路设置有两个输入，其中一个是指示场景亮度的光测量电路的输出，另一个是指示最大曝光时间输出源的输出，表示最大曝光时间可接受的曝光时间 相机。 存储电路存储由电平选择电路选择的输出，该输出指示两者之间的较短的曝光时间。
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Patent Agency Ranking
公开(公告)号：US4241279A
公开(公告)日：1980-12-23
申请号：US10691
申请日：1979-02-09
Applicant: Saburo Numata
Inventor： Saburo Numata
IPC: H05B41/32
CPC classification number: H05B41/325
Abstract: In an automatic electronic flash light device, a light measuring circuit includes an operational amplifier, a photosensor connected between the positive and negative inputs of the operational amplifier and a diode for log-compression connected in a feedback circuit of the operational amplifier. The output of the light measuring circuit is thus log-compressed and the log-compressed output is applied to an operational circuit which gives an output for controlling exposure.
Abstract translation: 在自动电子闪光灯装置中，光测量电路包括运算放大器，连接在运算放大器的正和负输入端之间的光电传感器和连接在运算放大器的反馈电路中的用于对数压缩的二极管。 因此，光测量电路的输出被对数压缩，对数压缩输出被施加到给出用于控制曝光的输出的操作电路。
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公开(公告)号：US4240008A
公开(公告)日：1980-12-16
申请号：US10690
申请日：1979-02-09
Applicant: Saburo Numata
Inventor： Saburo Numata
IPC: H05B41/32
CPC classification number: H05B41/325
Abstract: In an automatic electronic flash light device, an integrating circuit which integrates the amount of light reflected from an object to be photographed is started by a signal delayed from a trigger signal of a flash tube.
Abstract translation: 在自动电子闪光灯装置中，通过从闪光管的触发信号延迟的信号开始积分从被拍摄物体反射的光量的积分电路。
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公开(公告)号：US4096382A
公开(公告)日：1978-06-20
申请号：US767073
申请日：1977-02-09
Applicant: Saburo Numata , Shinichiro Okazaki
Inventor： Saburo Numata , Shinichiro Okazaki
CPC classification number: H03G3/3084 , G06G7/24 , H01J40/14 , H03G7/001
Abstract: A photoelectric current log-compression circuit includes a log-conversion diode, a photodiode and an operational amplifier for log-compression. In the negative feedback circuit of the operational amplifier is inserted a thermistor to control the amplification degree of the operational amplifier according to the current flowing through the log-conversion diode. Further, a forward voltage of a temperature compensating diode biased with a constant current is applied to the reference voltage of the operational amplifier.
Abstract translation: 光电流对数压缩电路包括对数转换二极管，光电二极管和用于对数压缩的运算放大器。 在运算放大器的负反馈电路中插入热敏电阻，以根据流过对数转换二极管的电流来控制运算放大器的放大度。 此外，以恒定电流偏置的温度补偿二极管的正向电压被施加到运算放大器的参考电压。
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公开(公告)号：US4020363A
公开(公告)日：1977-04-26
申请号：US643814
申请日：1975-12-23
Applicant: Saburo Numata , Shinichiro Fujino
Inventor： Saburo Numata , Shinichiro Fujino
CPC classification number: G06G7/1865
Abstract: In an integration circuit including an operational amplifier wherein an integrating capacitor and a switch are connected in series across the operational amplifier as a negative feedback circuit, a positive feedback resistor is connected between the connecting point between the integrating capacitor and the switch and the reference input terminal of the operational amplifier. The potential difference across the integrating capacitor is made zero in order to remove the influence of the leakage current of the switch when the switch is in its OFF-state.
Abstract translation: 在包括运算放大器的积分电路中，积分电容器和开关串联连接在运算放大器上作为负反馈电路，正反馈电阻连接在积分电容器和开关之间的连接点与参考输入端 端子的运算放大器。 积分电容器两端的电位差为零，以便在开关处于关断状态时消除开关漏电流的影响。
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公开(公告)号：US4012749A
公开(公告)日：1977-03-15
申请号：US617635
申请日：1975-09-29
Applicant: Saburo Numata
Inventor： Saburo Numata
CPC classification number: G03B15/05 , G03B2215/05
Abstract: An accessory shoe on the camera body is provided with a light emitter such as an LED, and a foot of the strobo flash light unit to be mounted in the shoe is provided with a photodetector such as a silicon photocell to detect light emitted by the light emitter. The light emitter is connected with an electric source in the camera and a switch closed upon release of the shutter. The photodetector is connected with a switching circuit for closing a trigger circuit of the strobo flash light tube energizing circuit to discharge the strobo flash light tube upon release of the shutter.
Abstract translation: 相机主体上的附件靴设置有诸如LED的发光体，并且要安装在鞋中的闪光灯组件的脚设置有诸如硅光电池的光电检测器，以检测由光发射的光 发射器。 光发射器与相机中的电源连接，并且在释放快门时开关闭合。 光电检测器与切换电路连接，用于关闭闪光灯管激励电路的触发电路，以在释放快门时排出闪光灯管。
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