Photographic camera with an automatic exposure-control circuit into
which one of two different light-sensitive elements is switched
depending upon scene brightness
    1.
    发明授权
    Photographic camera with an automatic exposure-control circuit into which one of two different light-sensitive elements is switched depending upon scene brightness 失效
    具有自动曝光控制电路的照相机,根据场景亮度切换两个不同光敏元件中的一个

    公开(公告)号:US4096491A

    公开(公告)日:1978-06-20

    申请号:US775985

    申请日:1977-03-09

    IPC分类号: G03B7/083 G03B7/08

    CPC分类号: G03B7/083

    摘要: The camera has a shutter release, a shutter, a device responsive to activation of the release for performing a retarded opening of the shutter, and a device operative when activated for causing the shutter to close. The exposure duration is controlled by an exposure control circuit. When the scene brightness level is within a first range, the automatically selected exposure durations are so short that, during a substantial part of the exposure, the shutter is in the process of changing from its closed to its fully open state. When the scene brightness level is within a second range, the automatically selected exposure durations are so long that, during a substantial part of the exposure, the shutter will already be in its fully open state. The exposure control circuit includes first and second light-sensitive elements, used alternatively for scene brightness levels in the first and second ranges, respectively, and first and second electronic switches connected in the current paths of the respective light-sensitive elements for switching one or the other light-sensitive elements into the exposure control circuit. A master-slave flip-flop has an information-signal input, two mutually complementary outputs and a clock input. The two controllable electronic switches have control inputs connected to respective ones of the flip-flop outputs. A brightness-measuring circuit determines whether the scene brightness level is in the first or the second range, and correspondingly applies to the information-signal input of the flip-flop one or the other of two information signals.

    摘要翻译: 相机具有快门释放,快门,响应于释放的激活以执行快门的延迟打开的装置,以及当被激活以使快门关闭时操作的装置。 曝光持续时间由曝光控制电路控制。 当场景亮度水平处于第一范围内时,自动选择的曝光持续时间非常短,使得在大部分曝光期间,快门处于从关闭状态变为完全打开状态的过程中。 当场景亮度水平处于第二范围内时,自动选择的曝光持续时间如此长,使得在大部分曝光期间,快门已经处于完全打开状态。 曝光控制电路包括分别用于第一和第二范围中的场景亮度级别的第一和第二光敏元件,以及连接在各个光敏元件的电流路径中的第一和第二电子开关,用于切换一个或 其他感光元件进入曝光控制电路。 主从触发器具有信息信号输入,两个互补输出和时钟输入。 两个可控电子开关具有连接到相应触发器输出的控制输入。 亮度测量电路确定场景亮度级别是处于第一还是第二范围,并且相应地应用于触发器的信息信号输入两个信息信号中的一个或另一个。

    Photographic camera with focussing system which time-multiplexes the
signals from plural photodetectors
    2.
    发明授权
    Photographic camera with focussing system which time-multiplexes the signals from plural photodetectors 失效
    具有聚焦系统的照相机,其对来自多个光电检测器的信号进行时间复用

    公开(公告)号:US4221474A

    公开(公告)日:1980-09-09

    申请号:US5091

    申请日:1979-01-22

    CPC分类号: G01C3/24 G02B7/32

    摘要: An infrared measuring beam is emitted from the camera towards the subject, and reflected back as a tiny light spot projected, by an optics which transversely shifts in dependence upon exposure-objective subject-distance setting, onto one, the other or both of two infrared photodiodes. The signals from the two photodiodes are transmitted in processed form to two output flip-flops through the intermediary of a single, shared signal-processing stage, employing time-division-multiplexed transmission of the two photodiode signals, to assure that the signal processing of the two photodiode output signals be as identical as possible.

    摘要翻译: 红外测量光束从相机朝向被摄体发射,并且通过根据曝光目标对象距离设置而横向偏移的光学器件投射到一个微小光点上并反射回到另一个或两个红外线 光电二极管 来自两个光电二极管的信号通过采用时分多路传输两个光电二极管信号的单个共享信号处理级的中介,以处理形式传输到两个输出触发器,以确保信号处理 两个光电二极管输出信号尽可能相同。

    Still- or motion-picture camera or reproducing apparatus
    3.
    发明授权
    Still- or motion-picture camera or reproducing apparatus 失效
    静态或动态相机或再现装置

    公开(公告)号:US4096500A

    公开(公告)日:1978-06-20

    申请号:US799325

    申请日:1977-05-23

    CPC分类号: G03B21/32 G03B17/36 G03B19/18

    摘要: A scene-pause counter, a scene-production counter, and a repetition counter are connected in a series. Each counter furnishes its count to an associated comparator which also receives a signal from an addressable read-only memory. Pulse trains are applied to the counters. When a comparator in the series detects coincidence, it initiates counting by the next counter. When the last comparator in the series detects coincidence it can restart the first counter. A program-selector switch causes different address signals to be applied to the memory, resulting in different operations of different durations, in different combinations and sequences. This makes possible projection or exposure of single frames or series of frames with intermediate pauses between the projection or exposure of successive frames or series of frames, as well as repetitions of such combinations of operations.

    摘要翻译: 串联连接场景暂停计数器,场景制作计数器和重复计数器。 每个计数器向相关的比较器提供计数,该比较器还从可寻址的只读存储器接收信号。 脉冲列车应用于计数器。 当串联中的比较器检测到重合时,它启动下一个计数器的计数。 当系列中的最后一个比较器检测到重合时,它可以重启第一个计数器。 程序选择器开关将不同的地址信号施加到存储器,导致不同的持续时间的不同操作,以不同的组合和顺序。 这使得可以在连续帧或一系列帧的投影或曝光之间具有中间暂停的单帧或一系列帧的投影或曝光,以及这些操作组合的重复。

    Photographic instant camera with magnetic recording capability
    4.
    发明授权
    Photographic instant camera with magnetic recording capability 失效
    具有磁记录功能的摄影即时相机

    公开(公告)号:US4270854A

    公开(公告)日:1981-06-02

    申请号:US74121

    申请日:1979-09-10

    摘要: A sheet of exposed and developed instant-camera film is discharged from an instant camera and then inserted by the user into a film-holding structure on the back of the camera which very accurately positions the film sheet, such that upon removal and reinsertion of the film sheet into the holding structure the film sheet will always assume a predetermined position. The camera is provided with a multihead magnetic head unit mounted for reciprocating motion along a magnetic strip or coating provided at a marginal portion of the inserted film sheet. During first-direction travel of the head unit, one head records, and during second-direction travel of the head unit a different and differently located head records onto a further segment of the magnetic strip. After recording, the recorded information, e.g., spoken words identifying the subject just photographed, can be reproduced, and if desired erased.

    摘要翻译: 曝光和显影的即时相机胶片的片材从即时相机排出,然后由用户插入相机背面的胶片保持结构,其非常精确地定位胶卷片,使得在拆下并重新插入胶片 膜片进入保持结构中,胶片将始终呈现预定位置。 相机设置有多头磁头单元,其安装成沿着设置在插入的胶片片的边缘部分处的磁条或涂层往复运动。 在头单元的第一方向移动期间,一个头记录,并且在头单元的第二方向移动期间,将不同且不同位置的头记录到磁条的另一段上。 在记录之后,可以再现所记录的信息,例如识别刚被拍摄的对象的口语,并且如果需要,可以擦除。

    Light totalizing system for photographic camera provided with a
shutter-diaphragm
    5.
    发明授权
    Light totalizing system for photographic camera provided with a shutter-diaphragm 失效
    配有快门隔膜的摄影相机的光累加系统

    公开(公告)号:US4251142A

    公开(公告)日:1981-02-17

    申请号:US37456

    申请日:1979-05-09

    IPC分类号: G03B7/097 G03B7/091 G03B9/62

    CPC分类号: G03B7/097

    摘要: During the ongoing course of the exposure, the aperture area increases linearly to a maximum value and then stays at the maximum value, the instantaneous amount of exposure light therefore changing correspondingly, even if the ambient-light level remains constant during the exposure. A pulse generator includes a photodetector exposed to ambient light and generates a pulse train of light-dependent repetition frequency, the pulses of which are counted by a light-totalizing counter which eventually generates a terminate-exposure signal. Ideally, the repetition frequency should increase steplessly and linearly, for maximum accuracy, or second best increase stepwise in small steps to approximate to a stepless linear increase, but in order to use an extremely low number of stepwise frequency changes, without loss of system accuracy, no attempt is made to per se keep the light-indicating repetition frequency accurate. Instead, the number and amounts of the repetition-frequency changes are so established that, when the repetition frequency is plotted against elapsed exposure time, it is proportional to a piecewise linearization of the time integral curve of the exposure-aperture surface area, the constituent straight-line segments of the linearization being confined within a predetermined error-of-total-exposure tolerance range. In the case of a linear increase of aperture size concluding in maximum size, this corresponding to a quadratic followed by a straight-line rise of the time integral of the exposure-aperture surface area, the requisite time integral curve, despite its complexity, can, for example, be implemented using as few as only three or even as few as two stepwise changes of repetition frequency, without loss of system accuracy.

    摘要翻译: 在正在进行的曝光过程中,孔径面积线性增加到最大值,然后保持在最大值,因此即使在曝光期间环境光水平保持恒定,曝光光线的瞬时量也相应地改变。 脉冲发生器包括暴露于环境光的光电检测器,并产生依赖于光的重复频率的脉冲序列,其脉冲由最终产生终止曝光信号的光累计计数器进行计数。 理想情况下,为了最大的精度,重复频率应该无级地和线性地增加,或者以小的步骤逐步增加,以逼近无级线性增加,但是为了使用极低数量的逐步频率变化,而不损失系统精度 没有尝试本身保持指示重复频率的准确性。 相反,重复频率变化的数量和数量是如此确定的,当重复频率相对于经过的曝光时间绘制时,它与曝光孔表面积的时间积分曲线的分段线性化成正比,成分 线性化的直线段被限制在预定的总曝光容差范围内。 在最大尺寸结束的孔径尺寸线性增加的情况下,这对应于二次曲线,随后是曝光孔表面积的时间积分的直线上升,所需的时间积分曲线尽管复杂,但可以 例如,使用只有三个甚至仅次于两次重复频率的逐步改变来实现,而不损失系统精度。

    Photographic-camera focussing system with comparator receiving
required-and actual-setting data
    6.
    发明授权
    Photographic-camera focussing system with comparator receiving required-and actual-setting data 失效
    具有比较器的摄像机聚焦系统接收需要和实际设置的数据

    公开(公告)号:US4214824A

    公开(公告)日:1980-07-29

    申请号:US3809

    申请日:1979-01-16

    IPC分类号: G03B13/36 G02B7/30 G03B13/02

    CPC分类号: G02B7/30

    摘要: A photographic camera has an exposure objective and a focus adjuster device for changing the subject-distance setting of the exposure objective, as well as a transducer generating actual-setting signals dependent upon the setting of the focus adjuster device. An evaluating circuit, operative for ascertaining camera-to-subject distance on one basis or another, produces digital required-setting signals, expressed using a first encoding scheme, whereas the actual-setting signals generated by the aforementioned transducer are expressed using a different, second encoding scheme. The actual-setting signals are applied to the first input of a comparator stage, whose second input receives a transformed version of the required-setting signals, transformed from the first to the second encoding scheme, i.e., so that the comparator can compare, in a direct and simple way, the actual-setting signals and required-setting signals against each other with both signals expressed in accordance with one and the same encoding scheme. The output signals produced by the comparator control indicator which informs the user of the direction in which the manual focus adjuster of the camera should be moved to improve the camera's state of focus, and/or control the energization of an electric motor or other electromagnetic positioning device operative for controlling the setting of the focus adjusting device.

    摘要翻译: 照相机具有用于改变曝光目标的被摄体距离设置的曝光目标和焦点调节装置,以及根据聚焦调节装置的设置产生实际设定信号的换能器。 用于确定基于一个或多个摄像机对被摄体距离的评估电路产生使用第一编码方案表示的数字需要设置信号,而由上述传感器产生的实际设置信号是使用不同的, 第二编码方案。 实际设置信号被施加到比较器级的第一输入端,比较器级的第二输入接收从第一编码方案变换到第二编码方案的所需设置信号的变换版本,即比较器可以 一种直接和简单的方式,实际设置信号和所需设置信号彼此具有根据同一编码方案表示的两个信号。 由比较器控制指示器产生的输出信号,其通知用户应该移动照相机的手动对焦调节器的方向以改善照相机的聚焦状态,和/或控制电动机或其它电磁定位的通电 用于控制聚焦调节装置的设置的装置。

    Proper synchronization of the firing of electronic flash units
    8.
    发明授权
    Proper synchronization of the firing of electronic flash units 失效
    电子闪光灯组件的正确同步

    公开(公告)号:US4067028A

    公开(公告)日:1978-01-03

    申请号:US666658

    申请日:1976-03-15

    IPC分类号: G03B15/05 H05B41/32 G03B15/03

    摘要: A photographic camera is provided with means for detachably mounting either a flashbulb flash unit or an electronic flash unit. The camera includes a piezoelectric transducer mechanically activatable for generating voltage impulses. When the flashbulb flash unit is mounted on the camera, the voltage impulses are directly applied across the terminals of the flashbulb. There elapses a certain time interval between the start of flashbulb firing and the development of maximum flashbulb output illumination. This time interval is taken into account in the design of the shutter-activating mechanism. When, instead of the flashbulb flash unit, the electronic flash unit is mounted on the camera, the voltage impulses generated for flashbulb firing are utilized to initiate operation of the electronic flash unit. Because the flash tube of the unit develops maximum output illumination more quickly than does a flashbulb, a time-delay circuit is utilized to effect compensation.

    摘要翻译: 照相机设置有用于可拆卸地安装闪光灯闪光灯组件或电子闪光灯组件的装置。 相机包括可以机械地激活以产生电压脉冲的压电换能器。 当闪光灯闪光灯组件安装在相机上时,电压脉冲直接施加在闪光灯的端子上。 闪光灯开始闪光和开发最大闪光灯输出照明之间经过一段时间间隔。 在快门激活机构的设计中考虑该时间间隔。 当将电子闪光灯组件安装在照相机上时,代替闪光灯闪光灯组件,用于产生用于闪光灯发射的电压脉冲用于启动电子闪光灯组件的操作。 因为该单元的闪光管比闪光灯更快地产生最大的输出照明,所以利用时间延迟电路进行补偿。

    Automatic exposure control for automatic-focus cameras
    9.
    发明授权
    Automatic exposure control for automatic-focus cameras 失效
    自动对焦摄像机的自动曝光控制

    公开(公告)号:US4466718A

    公开(公告)日:1984-08-21

    申请号:US205976

    申请日:1980-11-12

    CPC分类号: G02B7/30

    摘要: When a trigger lever is depressed, both a focus adjuster ring and a control disk commence to rotate in unison, driven by a spring mechanism. Position-sensing switches receive signals indicating which subject-distance setting the focus adjuster ring should be arrested at, and furthermore are opened and closed by the control disk during movement of the latter. When the focus adjuster ring reaches the required subject distance setting, it is arrested and kept arrested, thereby completing an automatic focussing operation, but the control disk continues to turn on to its end position, at which it causes the shutter mechanism of the camera to open and furthermore the exposure-timing circuit of the camera to initiation a scene-light-dependent exposure-timing operation.

    摘要翻译: 当按下触发器杆时,由弹簧机构驱动的焦点调节器环和控制盘都一致地开始旋转。 位置检测开关接收指示焦点调节环在哪个被摄体距离设置应该被阻止的信号,并且进一步在控制盘的运动期间由控制盘打开和关闭。 当焦点调节环达到所需的被摄体距离设置时,它被阻止并保持停止,从而完成自动聚焦操作,但是控制盘继续转到其终端位置,在该位置使摄像机的快门机构 打开相机的曝光定时电路,并进一步启动与场景相关的曝光定时操作。

    Collapsible camera
    10.
    发明授权
    Collapsible camera 失效
    可折叠相机

    公开(公告)号:US4147421A

    公开(公告)日:1979-04-03

    申请号:US819417

    申请日:1977-07-26

    IPC分类号: G03B17/04 G03B17/42 G03B17/52

    CPC分类号: G03B17/04

    摘要: A collapsible camera has a lens mount which is pivoted on the camera body and can move between an open and a shut position. An arcuate drive segment is composed of at least two segment parts, both of which pivot on the same pivot axis as the lens mount. These parts can move relative to one another and to the body and lens mount when the latter is opened and closed. The periphery of each part has serrations which engage with the teeth of a pinion that constitutes the input member of a film transporting mechanism so that the pinion is rotated in response to the pivoting movement of the lens mount.

    摘要翻译: 可折叠照相机具有透镜座,该透镜座在照相机主体上枢转并可在打开位置和关闭位置之间移动。 弧形驱动段由至少两个段部分组成,两个部分在与透镜安装座相同的枢轴上枢转。 当这些部件打开和关闭时,这些部件可相对于彼此移动并且移动到主体和透镜支架。 每个部件的周边具有锯齿,其与构成薄膜输送机构的输入构件的小齿轮的齿接合,使得小齿轮响应于透镜支架的枢转运动而旋转。