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1. 发明授权

US4909633A Multi-channel spectral light measuring device 失效
标题翻译：多通道光谱光测量装置
公开(公告)号：US4909633A
公开(公告)日：1990-03-20
申请号：US48678
申请日：1987-05-11
申请人： Yoshihiro Okui , Seiiku Ito , Masami Sugiyama
发明人： Yoshihiro Okui , Seiiku Ito , Masami Sugiyama
IPC分类号： G01J1/04 , G01J1/16 , G01J1/44 , G01J3/02 , G01J3/51 , G01J5/60
CPC分类号： G01J3/02 , G01J1/04 , G01J1/0425 , G01J1/16 , G01J3/0218 , G01J3/51 , G01J3/513 , G01J5/602 , G01J2001/4406 , G01J3/465
摘要： A light measuring device wherein a correct measured value can be obtained even if incident light varies in time or a luminance or brightness of an object for measurement is insufficient. The device comprises a branched optical fiber of a random specification having therein three mutually independent light transmission paths for introducing light from a common input end to three output ends. The input end of the optical fiber is located at a slightly defocused position of an objective lens while the output ends are individually opposed to three light receiving elements having different spectral sensitivities. Three components of light are simultaneously converted into electric signals and then into digital values by circuit means each including a double integration analog to digital converter. When a luminance is insufficient at a light receiving element, the gain of the associated analog to digital converter can be adjusted so as to assure appropriate measurement of light.
摘要翻译：一种光测量装置，其中即使入射光在时间上变化或者测量对象的亮度或亮度不足，也可以获得正确的测量值。该装置包括具有随机规格的分支光纤，其中具有用于将来自公共输入端的光引入三个输出端的三个相互独立的光传输路径。光纤的输入端位于物镜稍微散焦的位置，而输出端分别与具有不同光谱灵敏度的三个光接收元件相对。光的三个分量同时转换成电信号，然后通过电路装置转换为数字值，每个电路包括双积分模数转换器。当在光接收元件处的亮度不足时，可以调整相关模数转换器的增益，以便确保光的适当测量。

2. 发明授权

US4771265A Double integration analog to digital converting device 失效
标题翻译：双重集成模数转换器
公开(公告)号：US4771265A
公开(公告)日：1988-09-13
申请号：US48591
申请日：1987-05-11
申请人： Yoshihiro Okui , Seiiku Ito
发明人： Yoshihiro Okui , Seiiku Ito
IPC分类号： H03M1/52 , H03M1/00
CPC分类号： H03M1/52
摘要： An analog to digital converting device which can convert analog input signals individually into digital values of accurately corresponding magnitudes even when there is some difference in the input signals. The device comprises an integrating circuit which includes an operational amplifier for receiving an analog signal, an integrating capacitor connected between an input terminal and an output terminal of the operational amplifier, and a reset switch connected in parallel to the integrating capacitor. The integrating circuit is controlled to first perform an integrating operation and then an inverse integrating operation. A comparator is connected to an output terminal of the integrating circuit. A diode or transistor is connected in parallel to the integrating capacitor for limiting an amount of charge to be accumulated in the integrating capacitor by an inverse integrating operation to below a predetermined value.
摘要翻译：即使在输入信号有一些差异的情况下，也可以将模拟输入信号分别转换成精确对应幅度的数字值的模数转换装置。该装置包括积分电路，其包括用于接收模拟信号的运算放大器，连接在运算放大器的输入端和输出端之间的积分电容器以及与积分电容器并联连接的复位开关。控制积分电路，首先进行积分运算，然后进行逆积分运算。比较器连接到积分电路的输出端子。二极管或晶体管并联连接到积分电容器，用于通过反向积分运算将累积在积分电容器中的电荷量限制在低于预定值。

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