Distance measuring device
    1.
    发明授权
    Distance measuring device 失效
    距离测量装置

    公开(公告)号:US5614984A

    公开(公告)日:1997-03-25

    申请号:US505518

    申请日:1995-04-19

    CPC分类号: G02B7/32 G01S17/46

    摘要: A distance measuring device for ensuring accuracy of the positional relationship between the optical axis of a light-receiving lens and the optical center of a light-receiving element obtains distance information data by measuring the distance to a target plate which is 1 meter from the distance measuring device. If the distance information is not smaller than 1.625 meter, a switch is connected to one pair of terminals and the difference between reference output data stored in a control circuit and output data of an AF-IC obtained when the distance to the target plate is measured with the switch connected to the pair of terminals is calculated and stored in a memory circuit. When the value of the distance information data is not greater than 0.375 meter, the switch is connected to another pair of terminals, and output deviation data is stored in the memory circuit 11 in the same way. When the value of the distance information value is smaller than 1.625 meter and greater than 0.375 meter, the switch is connected to a further pair of terminals, and output deviation data is stored in the memory circuit in the same way.

    摘要翻译: 用于确保光接收透镜的光轴与光接收元件的光中心之间的位置关系的精确度的距离测量装置通过测量距离距离为1米的目标板的距离来获得距离信息数据 测量工具。 如果距离信息不小于1.625米,则开关连接到一对端子,并且存储在控制电路中的参考输出数据与当到目标板的距离被测量时获得的AF-IC的输出数据之间的差异 连接到一对终端的开关被计算并存储在存储器电路中。 当距离信息数据的值不大于0.375米时,开关连接到另一对端子,并且输出偏差数据以相同的方式存储在存储器电路11中。 当距离信息值小于1.625米且大于0.375米时,开关与另一对端子连接,输出偏差数据以相同的方式存储在存储器电路中。

    Device for correcting characteristic errors of a camera
    2.
    发明授权
    Device for correcting characteristic errors of a camera 失效
    用于校正照相机特征误差的装置

    公开(公告)号:US5371691A

    公开(公告)日:1994-12-06

    申请号:US712118

    申请日:1991-06-07

    IPC分类号: G02B7/08 G03B7/091 G03B17/00

    CPC分类号: G03B7/091 G03B17/00

    摘要: A photographic camera has a rectilinear approximate operation circuit for calculating characteristic correction data for correcting errors in the operational characteristics of the camera. Predetermined theoretical characteristic data dependent on operational characteristics of the camera are stored. Measured data corresponding to predetermined measured values are stored as individually measured characteristic data in a nonvolatile EEPROM so that the stored measured data can be easily changed by rewriting the EEPROM. An object signal is generated depending on an object to be photographed. The rectilinear approximate operational circuit calculates characteristic correction data from the object signal, the theoretical characteristic data and the measured characteristic data, which is then used for correcting errors in the operation characteristics of the camera.

    摘要翻译: 照相机具有用于计算用于校正照相机的操作特性中的误差的特征校正数据的直线近似运算电路。 存储取决于相机操作特性的预定理论特征数据。 与预定测量值相对应的测量数据作为单独测量的特性数据存储在非易失性EEPROM中,使得可以通过重写EEPROM容易地改变存储的测量数据。 根据要拍摄的物体产生物体信号。 直线近似运算电路根据目标信号,理论特性数据和测量特征数据计算特征校正数据,然后将其用于校正摄像机的运行特性中的误差。

    Distance measuring apparatus for a camera
    3.
    发明授权
    Distance measuring apparatus for a camera 失效
    照相机测距仪

    公开(公告)号:US5610680A

    公开(公告)日:1997-03-11

    申请号:US449816

    申请日:1995-05-24

    摘要: A distance measuring apparatus for a camera comprises a light projecting device for projecting light to an object to be photographed, a light receiving circuit for receiving light projected by the light projecting device and reflected by the object to be photographed and for converting the reflected light into first and second output signals, a first selecting device for selecting the first output signal, and a second selecting device for selecting one of the first and second output signals. A first signal processing circuit is connected to the first selecting device for processing the output signal selected by the first selecting device. A second signal processing circuit is connected to the second selecting device for processing the output signal selected by the second selecting device. A first memory stores output signals of the first and second signal processing circuits, the output signals being generated upon operation of the light projecting device when the first selecting device selects the first output signal and the second selecting device selects the second output signal. A second memory stores output signals of the first and second signal processing circuits, the output signals being generated upon operation of the light projecting device when the first and the second selecting devices both select the first output signal. A calculation circuit calculates a distance to the object to be photographed by adjusting an output of the first memory by an output of the second memory.

    摘要翻译: 照相机的距离测量装置包括用于将光投射到被拍摄物体的光投射装置,用于接收由投光装置投影并被被拍摄物体反射的光并将反射光转换成 第一和第二输出信号,用于选择第一输出信号的第一选择装置和用于选择第一和第二输出信号之一的第二选择装置。 第一信号处理电路连接到第一选择装置,用于处理由第一选择装置选择的输出信号。 第二信号处理电路连接到第二选择装置,用于处理由第二选择装置选择的输出信号。 第一存储器存储第一和第二信号处理电路的输出信号,当第一选择装置选择第一输出信号并且第二选择装置选择第二输出信号时,输出信号是在投光装置工作时产生的。 第二存储器存储第一和第二信号处理电路的输出信号,当第一和第二选择装置都选择第一输出信号时,输出信号是在光投射装置的工作时产生的。 计算电路通过第二存储器的输出调节第一存储器的输出来计算到要拍摄对象的距离。

    Power supply circuit for driving a light emitting element
    4.
    发明授权
    Power supply circuit for driving a light emitting element 失效
    用于驱动发光元件的电源电路

    公开(公告)号:US5327070A

    公开(公告)日:1994-07-05

    申请号:US874496

    申请日:1992-04-27

    摘要: In a step-up circuit for causing the emission of light of a distance measuring light emitting element, the step-up circuit outputs a step-up voltage from one terminal of a step-up capacitor. A step-up voltage level changeover circuit applies a step-up voltage to the capacitor every time the distance measuring light emitting element emits light that is higher than the step-up voltage in the normal state. The number of parts is reduced by eliminating a separate capacitor for light emission, the space for the circuit is reduced by using the capacitor having a small capacity, the soldering steps for fabrication of the circuit are automated; and the costs for assembly are ameliorated owing to the automation.

    摘要翻译: 在用于使距离测量发光元件发光的升压电路中,升压电路从升压电容器的一个端子输出升压电压。 每当距离测量发光元件发射高于正常状态下的升压电压的光时,升压电压电平转换电路将升压电压施加到电容器。 通过消除用于发光的单独的电容器来减少部件的数量,通过使用具有小容量的电容器来减少电路的空间,用于制造电路的焊接步骤是自动化的; 由于自动化,装配成本得到改善。

    Distance measuring device and camera having same
    5.
    发明授权
    Distance measuring device and camera having same 失效
    距离测量装置和相机具有相同的距离

    公开(公告)号:US5258800A

    公开(公告)日:1993-11-02

    申请号:US957338

    申请日:1992-10-06

    IPC分类号: G02B7/28 G03B13/36

    CPC分类号: G02B7/28

    摘要: In the distance measuring device for an automatic focusing camera, the reliability is improved by preventing the device from electric noise, and the structure is simplified so as to provide interchangeability to reduce the production cost. A light receiving lens 2 and a multilayer printed circuit board 3 are mounted on a holder 1. A potting frame 6 is provided on the lens-facing side surface of the printed circuit board 3. An optical sensor 4 and an IC 5 are both mounted within a space 3 enclosed by the potting frame 6, and sealed by a protecting resin 7 simultaneously. Further, resistors S and capacitors C of a distance measuring circuit are mounted on the opposite surface of the printed circuit board 3. Both the surfaces of the printed circuit board 3 are connected to each other via a through hole to construct the distance measuring circuit. The protecting resin 7 transmits light having specified wave lengths. The light reflected from a subject to be photographed is received by the optical sensor 4 after passing through the protecting resin, and a distance to the subject is calculated on the basis of the received light data.

    摘要翻译: 在自动聚焦照相机的距离测量装置中,通过防止装置的电噪声来提高可靠性,并且简化了结构,从而提供可互换性以降低生产成本。 光接收透镜2和多层印刷电路板3安装在保持器1上。在印刷电路板3的面向透镜的侧表面上设置灌封框架6.光学传感器4和IC 5都安装 在由灌封框架6封闭的空间3内,同时由保护树脂7密封。 此外,距离测量电路的电阻器S和电容器C安装在印刷电路板3的相对表面上。印刷电路板3的两个表面通过通孔彼此连接,构成距离测量电路。 保护树脂7透射具有特定波长的光。 从被摄体被反射的光在通过保护树脂后被光学传感器4接收,并且基于接收到的光数据计算与被摄体的距离。

    Distance measuring device for camera
    6.
    发明授权
    Distance measuring device for camera 失效
    照相机测距装置

    公开(公告)号:US5444511A

    公开(公告)日:1995-08-22

    申请号:US144827

    申请日:1993-10-29

    IPC分类号: G02B7/32 G03B13/36

    CPC分类号: G02B7/32

    摘要: A distance measuring device may be constructed utilizing a reduced number of components by calculating distance on the basis of the duration of an integration. Pulsed light is projected toward an object. A selecting circuit selectively outputs one of a pair of output voltages from two current-voltage converting circuits, each of which is connected to a position sensitive device which is configured to receive light reflected from the object. A variable-gain amplifying circuit is used for amplifying the selected output voltage and for producing an amplified output voltage. The output voltage of the amplifying circuit is integrated by an integrating circuit. Reference voltage generating circuitry generates two reference voltages having different levels and a comparing circuit compares the output voltage of the integrating circuit with one of a pair of reference voltages. Gain selecting circuitry is used for determining the gain of the variable-gain amplifying circuit on the basis of the output result of the comparing circuit. The distance to the object is determined in accordance with the duration of time that integration is performed by the integrating circuit until the integrated output voltage exceeds one of the reference voltages. Thus, distance may be determined in accordance with the magnitude of the integrated output voltage, the number of times integration is performed or the number of light projections performed by the device.

    摘要翻译: 可以通过基于积分的持续时间计算距离来利用减少数量的部件来构造距离测量装置。 脉冲光被投射到物体上。 选择电路选择性地输出来自两个电流 - 电压转换电路的一对输出电压中的一个,每个电流电压转换电路连接到位置敏感器件,位置敏感器件被配置为接收从物体反射的光。 可变增益放大电路用于放大所选择的输出电压并产生放大的输出电压。 放大电路的输出电压由积分电路集成。 参考电压产生电路产生具有不同电平的两个参考电压,并且比较电路将积分电路的输出电压与一对参考电压中的一个进行比较。 增益选择电路用于根据比较电路的输出结果确定可变增益放大电路的增益。 根据由积分电路进行积分的持续时间直到积分输出电压超过基准电压之一来确定到物体的距离。 因此,可以根据集成输出电压的大小,执行积分的次数或由装置执行的光投影的数量来确定距离。

    Electronic circuit having electrically isolated digital and analog
circuitry
    7.
    发明授权
    Electronic circuit having electrically isolated digital and analog circuitry 失效
    电子电路具有电气隔离的数字和模拟电路

    公开(公告)号:US5621347A

    公开(公告)日:1997-04-15

    申请号:US288485

    申请日:1994-08-10

    CPC分类号: G03B7/0807

    摘要: In order to reduce noise in a controlling circuit including digital circuitry and analog circuitry constructed together on a single CMOS integrated circuit, a regulator is constructed as part of the integrated circuit. A power supply is directly connected to the digital circuitry, and a voltage output of the regulator is supplied to the analog circuitry. The output state of the regulator may be controlled by a switch. Degradation of the performance characteristics of the analog circuitry while the digital circuitry is being operated can be prevented by electrically isolating the power supply to the digital circuitry from the power supply to the analog circuitry. Since the regulator is built into the integrated circuit, the number of externally provided components is thereby reduced, further contributing to the downsizing of an electronic device such as a camera. Furthermore, even when the power supply of the digital circuitry fluctuates greatly, the effects on the analog circuitry are minimized.

    摘要翻译: 为了减少包括数字电路和在单个CMOS集成电路上一起构成的模拟电路的控制电路中的噪声,调节器被构造为集成电路的一部分。 电源直接连接到数字电路,并且调节器的电压输出被提供给模拟电路。 调节器的输出状态可以由开关控制。 可以通过将数字电路的电源与模拟电路的电源电隔离来防止数字电路正在运行时模拟电路的性能特性的降低。 由于调节器内置在集成电路中,因此减少了外部提供的部件的数量,这进一步有助于诸如照相机的电子设备的小型化。 此外,即使当数字电路的电源波动很大时,对模拟电路的影响也被最小化。

    Distance measuring device and camera having same
    8.
    发明授权
    Distance measuring device and camera having same 失效
    距离测量装置和相机具有相同的距离

    公开(公告)号:US5461451A

    公开(公告)日:1995-10-24

    申请号:US129232

    申请日:1993-09-29

    摘要: A distance measuring device for an automatic focusing camera includes a light receiving lens and a multilayer printed circuit board mounted on a holder. A potting frame is provided on the lens-facing side surface of the printed circuit board. An optical sensor and an IC are both mounted within a space enclosed by the potting frame and simultaneously sealed by a protecting resin. Resistors and capacitors of a distance measuring circuit are mounted on the opposite surface of the printed circuit board. The two surfaces of the printed circuit board are connected to each other via a through hole to construct the distance measuring circuit. The protecting resin transmits light having specified wavelengths. The light reflected from a subject to be photographed is received by the optical sensor after passing through the protecting resin, and the distance to the subject is calculated on the basis of the received light data.

    摘要翻译: 用于自动聚焦照相机的距离测量装置包括光接收透镜和安装在支架上的多层印刷电路板。 在印刷电路板的面向镜片的侧表面上设置灌封框架。 光学传感器和IC都安装在由灌封框架封闭的空间内,同时由保护树脂密封。 距离测量电路的电阻器和电容器安装在印刷电路板的相对表面上。 印刷电路板的两个表面通过通孔相互连接构成测距电路。 保护树脂透射具有特定波长的光。 由经过保护树脂的光学传感器接收被摄体的反射光,根据接收到的光数据计算与被摄体的距离。

    Camera with battery checkup function
    9.
    发明授权
    Camera with battery checkup function 失效
    相机带电池检查功能

    公开(公告)号:US5732295A

    公开(公告)日:1998-03-24

    申请号:US639377

    申请日:1996-04-26

    CPC分类号: G03B7/26

    摘要: A camera with a battery checking function is provided with a timer for generating an output signal at predetermined time intervals, a memory for storing a calculated time value, an external switch for generating an activating signal for activating the camera, and a microcomputer for activating the camera in response to the activating signal generated by the external switch, for updating the content of the memory in accordance with the output of the timer at first time intervals when the camera is activated, for placing the camera in a standby mode when the activating signal has not been detected for a predetermined period of time, and for updating the content of the memory in accordance with the output of the timer means at second time intervals, longer than the first time intervals, when the camera is in a standby mode. A voltage detector detects the voltage of a battery at third time intervals when the camera is activated and detects the voltage of the battery at fourth time intervals when the camera is in the standby mode. A display indicates the charge level of the battery.

    摘要翻译: 具有电池检查功能的相机设置有用于以预定时间间隔产生输出信号的定时器,用于存储计算出的时间值的存储器,用于产生用于启动相机的激活信号的外部开关,以及用于激活 照相机响应于由外部开关产生的激活信号,用于当激活摄像机时以第一时间间隔根据定时器的输出来更新存储器的内容,以便在激活信号时将相机置于待机模式 在相机处于待机模式时,在预定时间段内尚未检测到用于根据定时器装置的输出以比第一时间间隔长的第二时间间隔更新存储器的内容。 当摄像机被激活时,电压检测器以第三时间间隔检测电池的电压,并且当相机处于待机模式时以第四时间间隔检测电池的电压。 显示屏显示电池的充电水平。