Photographic camera with exposure control utilizing a phase controllable
crystal
    11.
    发明授权
    Photographic camera with exposure control utilizing a phase controllable crystal 失效
    具有利用相位可控晶体的曝光控制的照相机

    公开(公告)号:US4190343A

    公开(公告)日:1980-02-26

    申请号:US608326

    申请日:1975-08-27

    IPC分类号: G03B7/08 G03B7/16 G03B9/56

    CPC分类号: G03B7/16 G03B7/0807

    摘要: A high speed light measuring circuit utilizing a photodiode is combined with a high speed exposure terminating circuit utilizing two polarized filters and a liquid or ferroelectric crystal placed between the polarized filters to constitute an exposure control circuit operative without modification for both daylight and flash exposure.

    摘要翻译: 使用光电二极管的高速光测量电路与利用两个偏振滤光器的高速曝光终端电路和位于偏振滤光器之间的液体或铁电晶体组合​​,以构成曝光控制电路,而无需修改日光和闪光曝光。

    Motion picture camera operable by a single operating switch
    12.
    发明授权
    Motion picture camera operable by a single operating switch 失效
    运动照相机可由单个操作开关操作

    公开(公告)号:US4050795A

    公开(公告)日:1977-09-27

    申请号:US663814

    申请日:1976-03-04

    CPC分类号: G03B7/085 G03B19/18

    摘要: A single operating switch replaces the main switch connecting the diaphragm control means to the battery and the release switch activating the film transport. All camera circuits are directly connected to the battery when the main operating switch is closed. An electronic switch is connected in series with the film transport motor and is closed only upon receipt of a control signal. In a first embodiment the control signal is furnished by a timing circuit after a predetermined time interval following the activation of the main operating switch. In a second embodiment the control signal is furnished by a NAND-gate which has a first input which receives a "1" signal while the diaphragm is being adjusted and a second input which receives a "1" signal while the electronic switch is open. The NAND-gate thus furnishes a "1" signal to the electronic switch causing it to be conductive at all times except when the initial adjustment of the diaphragm takes place.

    摘要翻译: 单个操作开关代替将隔膜控制装置连接到电池的主开关和启动胶片传输的释放开关。 当主操作开关关闭时,所有相机电路都直接连接到电池。 电子开关与胶片传送电机串联连接,仅在接收到控制信号时才关闭。 在第一实施例中,在主操作开关激活之后的预定时间间隔之后,控制信号由定时电路提供。 在第二实施例中,控制信号由NAND门提供,该NAND门具有在调节隔膜时接收“1”信号的第一输入端和在电子开关断开时接收“1”信号的第二输入端。 因此,NAND门因此向电子开关提供“1”信号,导致其始终是导电的,除了当膜片的初始调节发生时。

    Motion picture camera with improved frame count indicator
    13.
    发明授权
    Motion picture camera with improved frame count indicator 失效
    具有改进的帧数指示器的电影摄影机

    公开(公告)号:US3977776A

    公开(公告)日:1976-08-31

    申请号:US607056

    申请日:1975-08-22

    CPC分类号: G03B1/66

    摘要: Pulses are furnished which each indicate transport of a frame. The pulses are counted on a BCD counter. Selected outputs of the counter are connected to the inputs of coupling stages, each including a JK flip-flop. Each flip-flop changes state for a predetermined count on the counter. When each flip-flop changes state, a corresponding indicator lights up, thereby furnishing an indication to the photographer of how many frames have been transported.

    摘要翻译: 每个脉冲都指示一帧的传输。 脉冲在BCD计数器上计数。 计数器的选定输出端连接到耦合级的输入端,每一个都包括一个JK触发器。 每个触发器在计数器上改变预定计数的状态。 当每个触发器改变状态时,相应的指示灯亮起,从而向拍摄者提供已经传送了多少帧的指示。

    Method and apparatus for making positive copies from diapositives
    14.
    发明授权
    Method and apparatus for making positive copies from diapositives 失效
    从阳性药物制备阳性拷贝的方法和设备

    公开(公告)号:US4729015A

    公开(公告)日:1988-03-01

    申请号:US883624

    申请日:1986-07-09

    CPC分类号: H04N1/401 H04N1/23 H04N1/508

    摘要: Diapositives are copied on negative photosensitive paper in an apparatus wherein the positive is electronically scanned, line-by-line, and the thus obtained density signals are electronically inverted prior to influencing the beam of a CRT or laser which is used to reproduce the image of the positive on paper, either line-by-line or point-by-point. The inversion of signals renders it possible to scan the high-transmissivity portions of the positives with a narrow beam, i.e., with a high degree of resolution.

    摘要翻译: 在阳性电子扫描的装置中,将负光敏纸张复印在阴影感光纸上,并且将这样得到的浓度信号在影响用于再现图像的CRT或激光的光束之前被电子地反转 纸上的积极性,无论是逐行还是逐点。 信号的反转使得可以用窄波束即高分辨率扫描正极的高透射率部分成为可能。

    Color filter arrangement for optoelectric converting devices
    15.
    发明授权
    Color filter arrangement for optoelectric converting devices 失效
    用于光电转换器件的滤色器布置

    公开(公告)号:US4481530A

    公开(公告)日:1984-11-06

    申请号:US380014

    申请日:1982-05-19

    CPC分类号: H04N9/045

    摘要: A color filtering device for a charge-coupled photoelectric converting device including a series of uniformly configured photoelectric converting elements which are sensitized by the filtering arrangement in the order of green, blue, green and red. The filtering arrangement includes a transparent filter carrier supporting a series of green, blue, green, red, blue, green, and so on, filtering elements. The active surface of each blue filtering element is equal to the active surface of the assigned photoelectric converting element. The green and red filtering elements are reduced in size in inverse proportion to the spectral sensitivity of the assigned photoelectric converting element. The resulting spacings between the elements are covered by an opaque masking layer, preferably of chromium.

    摘要翻译: 一种用于电荷耦合光电转换装置的滤色装置,包括由绿色,蓝色,绿色和红色的顺序由滤光装置致敏的一系列均匀配置的光电转换元件。 滤波装置包括一个支持一系列绿色,蓝色,绿色,红色,蓝色,绿色等过滤元件的透明滤光片架。 每个蓝色滤光元件的有效表面等于所分配的光电转换元件的有效表面。 绿色和红色滤光元件的大小与所分配的光电转换元件的光谱灵敏度成反比。 元件之间产生的间距被不透明掩蔽层覆盖,优选为铬。

    Apparatus for stepwise transport of photographic film or the like
    16.
    发明授权
    Apparatus for stepwise transport of photographic film or the like 失效
    照相胶片等的逐步传送装置

    公开(公告)号:US4362259A

    公开(公告)日:1982-12-07

    申请号:US235837

    申请日:1981-02-19

    IPC分类号: G03B21/52 G03B27/46 B65H17/26

    CPC分类号: G03B21/52 G03B27/462

    摘要: Apparatus for stepwise transport of exposed and developed photographic films through a copying machine so as to place selected film frames, namely those film frames which are to be imaged onto photographic paper and are designated by holes or other types of indices, into register with the copying station has two photoelectronic detectors the first of which transmits signals to the forward input and the second of which transmits signals to the reverse input of a forward and reverse counter in a circuit which regulates the speed of the film transporting motor. The second detector is located downstream of the first detector and both detectors transmit signals on detection of indices denoting the film frames to be copied. The circuit decelerates the motor, either stepwise or abruptly, in response to detection of indices by the first detector, arrests the motor for a given interval of time in response to detection of indices by the second detector, and ensures that the motor is driven at a maximum speed in the absence of indices between the first and second detectors. The speed of the motor can be increased from zero to maximum speed in a single stage, in several stages, or continuously. This can be accomplished by connecting the operational amplifier for the motor in circuit with a voltage divider wherein one or more resistors are connected in parallel with switching transistors which are energizable with appropriate delays by a timer receiving impulses from the second detector.

    摘要翻译: 用于通过复印机逐步传送曝光和显影的照相胶片的装置,以便将所选择的胶片框架,即要被成像到相纸上的胶片框架,以及用空穴或其它类型的索引指定,与复印件对准 站具有两个光电检测器,其中第一个将信号发送到正向输入端,其中第二个检测器在调节膜输送电机的速度的电路中向正向和反向计数器的反向输入端发送信号。 第二检测器位于第一检测器的下游,并且两个检测器在检测到指示要复制的胶片帧的索引时发送信号。 响应于由第一检测器检测到索引而使电动机逐步或突然地减速电动机,响应于由第二检测器检测到的指数而将电动机停止给定的时间间隔,并且确保电动机被驱动 在第一和第二检测器之间没有索引的最大速度。 马达的速度可以在一个阶段中,从零到最大速度,分几个阶段,或连续地增加。 这可以通过将电路中的电动机的运算放大器与分压器连接来实现,其中一个或多个电阻器与开关晶体管并联连接,开关晶体管通过定时器接收来自第二检测器的脉冲的适当延迟而被激励。

    Arrangement for adjusting components of photographic apparatus or the
like
    17.
    发明授权
    Arrangement for adjusting components of photographic apparatus or the like 失效
    用于调整照相设备等的组件的布置

    公开(公告)号:US4324465A

    公开(公告)日:1982-04-13

    申请号:US203955

    申请日:1980-11-04

    CPC分类号: G03B21/53 G05B5/01

    摘要: An electric motor which can drive the objective of a slide projector or which can adjust the blade or blades of a diaphragm receives signals from the output of an operational amplifier which receives first and second signals from a photosensitive transducer and a differentiating capacitor. The (second) signals from the capacitor are modified (first) signals from the transducer, and the combined intensity of first and second signals is such that the signals at the output of the amplifier reach a value which they would normally reach only when the component has already assumed a predetermined position before the motor can complete the movement of the component to such position. This allows for idling of the motor during the last stage of movement of the component to its predetermined position and/or for braking of the motor during such stage to ensure that the motor can rapidly advance the component during the major part of movement to the predetermined position and the component does not overshoot such position during the last stage of its movement.

    摘要翻译: 可以驱动幻灯投影仪的目标或可以调节光阑的叶片的电动机从接收来自光敏换能器和微分电容器的第一和第二信号的运算放大器的输出接收信号。 来自电容器的(第二)信号是来自换能器的修改(第一)信号,并且第一和第二信号的组合强度使得放大器的输出处的信号达到它们通常仅在组件 在电动机可以完成部件移动到这样的位置之前已经假定了预定的位置。 这允许在该部件移动到其预定位置的最后阶段期间马达的空转和/或用于在该阶段期间马达的制动,以确保马达能够在大部分运动期间快速地将部件推进到预定的位置 位置,并且组件在其运动的最后阶段不会超过这样的位置。

    Speed regulation of D.C. motor using counter
    18.
    发明授权
    Speed regulation of D.C. motor using counter 失效
    使用计数器调节直流电动机

    公开(公告)号:US4216418A

    公开(公告)日:1980-08-05

    申请号:US904559

    申请日:1978-05-10

    摘要: A semiconductor switch connected in the motor current path is controlled by a clocked flip-flop having a switch-ON and a switch-OFF state, capable of changing states only in response to a clock pulse. RPM is selected by establishing the initial count on a downwards counter having a carryover output at which a carryover signal appears when zero count is reached. A first higher-frequency pulse train is counted by the counter. A second lower-frequency train of set pulses has a repetition frequency dependent upon motor speed. The leading end of each set pulse starts the counter counting. An unclocked flip-flop responds to the carryover signal by assuming a motor-speed-too-low state. The clocked flip-flop when clocked responds to the state of the unclocked flip-flop. The trailing flank of the set pulse clocks the clocked flip-flop so that the latter can respond to the state of the unclocked flip-flop and slightly thereafter sets the unclocked flip-flop to the motor-speed-too-high state. Thus, at the time when the clocked flip-flop responds to state of the unclocked flip-flop, the latter is in the speed-too-low state only if the carryover signal was produced before the trailing end of the set pulse.

    摘要翻译: 连接在电动机电流路径中的半导体开关由具有开关导通和关断状态的时钟触发器控制,能够仅响应于时钟脉冲而改变状态。 通过在具有携带输出的向下计数器上建立初始计数来选择RPM,当达到零计数时,进位转移信号出现在其中。 第一个高频脉冲串由计数器计数。 设定脉冲的第二低频列具有取决于电机速度的重复频率。 每个设定脉冲的前端开始计数。 假设电机速度太低的状态,非锁定触发器响应进位信号。 时钟触发器时钟响应未锁定的触发器的状态。 设定脉冲的后端将时钟触发器时钟,使后者可以响应未闭锁的触发器的状态,稍后将非锁定触发器设置为电机速度过高状态。 因此,当时钟触发器响应于未闭锁触发器的状态时,后者仅在在设置脉冲的尾端之前产生进位信号时才处于速度太低状态。

    Motion-picture camera with automatic diaphragm control compensated for
shutter-speed variations
    19.
    发明授权
    Motion-picture camera with automatic diaphragm control compensated for shutter-speed variations 失效
    具有自动光圈控制的运动图像摄像机可补偿快门速度变化

    公开(公告)号:US4116552A

    公开(公告)日:1978-09-26

    申请号:US799326

    申请日:1977-05-23

    IPC分类号: G03B7/085 G03B7/08

    CPC分类号: G03B7/085

    摘要: A shutter mechanism alternates between an exposure phase and a reflex phase. In the reflex phase it reflects incident scene light onto a light-sensitive stage which generates a light-indicating signal. A first control pulse is generated at the start of the reflex phase, and a second control pulse at the end of the reflex phase. An integrating circuit receives the first pulse and during the reflex phase generates an integral signal dependent upon the time integral of the light-indicating signal. A signal-transmission switch is operative in response to the second pulse for transmitting the integral signal to a signal-storing stage. The signal from the signal-storing stage is used as the feedback signal to a negative-feedback control arrangement for the camera diaphragm. This feedback signal is dependent not only upon scene light but also the duration of the reflex phase. Accordingly, if the scene light remains constant but the speed of the motor driving the shutter is below or above rated speed, that is automatically compensated by a change in the feedback signal, so that the diaphragm setting takes into account the longer or shorter exposure times resulting from the shutter-motor speed deviation.

    摘要翻译: 快门机构在曝光阶段和反射阶段之间交替。 在反射阶段,它将入射场景光反射到产生指示光的光敏台上。 在反射阶段开始时产生第一控制脉冲,在反射阶段结束时产生第二控制脉冲。 积分电路接收第一脉冲,并且在反射阶段期间,根据光指示信号的时间积分产生积分信号。 信号传输开关响应于用于将积分信号发送到信号存储级的第二脉冲而工作。 来自信号存储级的信号用作相机隔膜的负反馈控制装置的反馈信号。 该反馈信号不仅取决于场景光,而且依赖于反射相位的持续时间。 因此,如果场景光保持恒定,但是驱动快门的电动机的速度低于或高于额定速度,则通过反馈信号的改变自动补偿,使得隔膜设置考虑到更长或更短的曝光时间 由快门电机速度偏差导致。

    Motion picture camera with variable aperture control rate
    20.
    发明授权
    Motion picture camera with variable aperture control rate 失效
    具有可变孔径控制率的运动图像摄像机

    公开(公告)号:US4066347A

    公开(公告)日:1978-01-03

    申请号:US639375

    申请日:1975-12-10

    CPC分类号: G03B7/085

    摘要: The pulse repetition rate of a pulse generator furnishing pulses to a stepmotor which opens and closes the aperture in response to signals indicating that the quantity of light falling on the film is too little or too much respectively, is varied so that the aperture size is changed more rapidly when the difference between the desired and the actual quantity of light falling on the film is great, and is changed more slowly as the quantity of light falling on the film approaches the desired light quantity.