Power supply circuit for driving a light emitting element
    1.
    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 apparatus for a camera
    2.
    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。

    Distance measuring device
    3.
    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
    4.
    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 device for a camera
    5.
    发明授权
    Distance measuring device for a camera 失效
    摄像机距离测量装置

    公开(公告)号:US5389996A

    公开(公告)日:1995-02-14

    申请号:US144828

    申请日:1993-10-29

    CPC分类号: G01S7/497 G02B7/32

    摘要: A distance measuring device for a camera has a near infrared light-projecting element for projecting measuring light to be reflected by an object to be photographed. The reflected measuring light is received as a first light beam image at a first position on a surface of a first light-receiving element. The reflected measuring light reflected by the object is also received as a second light beam image at a second position on a surface of a second light-receiving element. A CPU controls the focusing movement of the lens of the camera by computing a distance to the object depending on the first position, compensating the computed distance depending on the second position, and controlling the focusing movement of the lens based on the compensated computed distance. The CPU compares the second position with a predetermined distance value and inhibits the compensation of the computed distance if it is determined that compensation is not necessary.

    摘要翻译: 用于照相机的距离测量装置具有近红外光投射元件,用于投影测量光以被被拍摄物体反射。 反射的测量光在第一光接收元件的表面上的第一位置处被接收为第一光束图像。 由物体反射的反射的测量光也被接收为在第二光接收元件的表面上的第二位置处的第二光束图像。 CPU通过根据第一位置计算到物体的距离来控制相机的透镜的聚焦运动,根据第二位置补偿计算出的距离,并且基于经补偿的计算距离来控制透镜的聚焦运动。 如果确定不需要补偿,则CPU将第二位置与预定距离值进行比较,并且禁止补偿计算出的距离。

    Analog-to-digital converter for camera
    6.
    发明授权
    Analog-to-digital converter for camera 失效
    模拟数字转换器相机

    公开(公告)号:US5097262A

    公开(公告)日:1992-03-17

    申请号:US72965

    申请日:1987-07-14

    CPC分类号: G02B7/32 H03M1/0619 H03M1/504

    摘要: An analog-to-digital converter for a camera has a reference signal generating element, a measurement signal generating element, and pulse output means for generating pulses of pule durations corresponding respectively to signals from the generating elements. The generating elements are alternately selected to produce two pulse durations, and the ratio of these two durations is computed by pulse duration ratio computing means. Control information corresponding to the computed ratio is retrieved from memory means.

    摘要翻译: 用于相机的模拟 - 数字转换器具有参考信号产生元件,测量信号产生元件和用于产生分别对应于来自发生元件的信号的脉冲持续时间的脉冲输出装置。 交替选择发生元件以产生两个脉冲持续时间,并且这两个持续时间的比率由脉冲持续时间比计算装置计算。 从存储器装置检索对应于计算出的比率的控制信息。

    Aromatic polycarbonate
    7.
    发明授权
    Aromatic polycarbonate 有权
    芳香聚碳酸酯

    公开(公告)号:US06255436B1

    公开(公告)日:2001-07-03

    申请号:US09444933

    申请日:1999-11-22

    IPC分类号: C08G6400

    CPC分类号: C08G64/307

    摘要: An aromatic polycarbonate of the present invention is produced by reacting an aromatic dihydroxy compound with a compound capable of introducing a carbonate bond, and has a viscosity-average molecular weight of 12,000 to 40,000 and a content of a cyclic oligomer represented by the formula (1) of not more than 1,000 ppm, in which the percentage of the content of said cyclic oligomer represented by the formula (1) based on the total contents of the cyclic oligomer represented by the formula (1), an oligomer represented by the formula (2) and an oligomer represented by the formula (3) satisfies the following relational formula [I]: 0

    摘要翻译: 本发明的芳香族聚碳酸酯是通过使芳香族二羟基化合物与能够引入碳酸酯键的化合物反应而制造的,粘均分子量为12,000〜40,000,由式(1)表示的环状低聚物的含量 )不超过1000ppm,其中由式(1)表示的所述环状低聚物的含量的百分比基于由式(1)表示的环状低聚物的总含量,由式(1)表示的低聚物 2)和式(3)表示的低聚物满足以下关系式[I]:其中(1),(2)和(3)是由上式(1),(2)表示的低聚物的含量, 和(3)分别; Mv是所述芳族聚碳酸酯的粘均分子量。

    Optical recording medium having zones wherein the number of sectors per
track is constant and method of injection-molding the same
    9.
    发明授权
    Optical recording medium having zones wherein the number of sectors per track is constant and method of injection-molding the same 失效
    具有其中每个轨道的扇区数不变的区域的光记录介质和其注射成型的方法

    公开(公告)号:US5831963A

    公开(公告)日:1998-11-03

    申请号:US861282

    申请日:1997-05-21

    IPC分类号: G11B7/007 G11B7/26 G11B7/24

    CPC分类号: G11B7/00745 G11B7/263

    摘要: A large-capacity optical recording medium, comprises a track region having a plurality of tracks arranged along the concentric or spiral grooves, the track region being radially divided into annular zones, and each of the tracks being partitioned into plural sectors such that a number of the sectors per track is constant in each zone but the number of the sectors per track differs between among zones, wherein an address designating a specific track and sector is previously recorded as a plurality of prepits, the track region having a user-track region, in which a user can optically record or readout information, and a pair of control-track regions, radially bracketing said user-track region, the control-track region permitting the user to read out information therefrom but not to record information thereon, and wherein the control-track region located radially inward of the user-track region is provided with medium information tracks in which medium information has been recorded as prepits, and the control-track region located outward of the user-track region has no medium information track and is not used for recording, nor for reading out of user data.

    摘要翻译: 一种大容量光记录介质,包括具有沿着同心或螺旋槽布置的多个轨道的轨道区域,轨道区域被径向分成环形区域,并且每个轨道被划分成多个扇区,使得多个扇区 每个轨道的扇区在每个区域中是恒定的,但是每个轨道之间的扇区数量在区域之间不同,其中指定特定轨道和扇区的地址被预先记录为多个预凹坑,轨道区域具有用户轨道区域, 其中用户可以光学地记录或读出信息,以及一对控制轨道区域,径向包围所述用户轨道区域,所述控制轨道区域允许用户从其中读出信息,但不在其上记录信息,并且其中 在用户轨道区域的径向内侧设置的控制轨道区域设置有媒体信息轨道,其中介质信息已被记录为预先 凹坑和位于用户轨道区域外侧的控制轨道区域没有介质信息轨迹,并且不用于记录,也不用于读出用户数据。

    Flame-retardant polyester resin composition
    10.
    发明授权
    Flame-retardant polyester resin composition 失效
    阻燃聚酯树脂组合物

    公开(公告)号:US5681879A

    公开(公告)日:1997-10-28

    申请号:US499664

    申请日:1995-07-06

    IPC分类号: C08K5/00 C08K5/053

    CPC分类号: C08K5/0066 C08K5/053

    摘要: The disclosure describes a flame-retardant polyester resin composition comprising: (1) 100 parts by weight of a polyester resin which may contain a halogen atom; (2) 0.01 to 5 parts by weight of a polyhydric alcohol having not less than 3 hydroxyl groups in the molecule with a hydroxyl group concentration of 1.0.times.10.sup.-2 to 3.5.times.10.sup.-2 eq/g; (3) 0 to 20 parts by weight of an inorganic flame retarding synergist; and (4) 0 to 50 parts by weight of a halogen-based flame retardant, the halogen content in the composition being 0.1 to 20% by weight.

    摘要翻译: 本发明描述了一种阻燃聚酯树脂组合物,其包含:(1)100重量份可含有卤素原子的聚酯树脂; (2)0.01〜5重量份在羟基浓度为1.0×10 -2〜3.5×10 -2 eq / g的分子中具有不少于3个羟基的多元醇; (3)0〜20重量份的无机阻燃增效剂; 和(4)0〜50重量份的卤素系阻燃剂,组合物中的卤素含量为0.1〜20重量%。