公开(公告)号：US4720628A

公开(公告)日：1988-01-19

申请号：US923367

申请日：1986-10-27

申请人： Herbert G. Drake, Jr.

发明人： Herbert G. Drake, Jr.

IPC分类号： G01J1/16 ,  G01J1/44 ,  G01J3/427 ,  H01J37/32 ,  G01J1/42

CPC分类号： H01J37/32935 ,  G01J1/1626 ,  G01J2001/4406 ,  G01J3/427 ,  G01N2201/1222 ,  G01N2201/126

摘要： An improved optical endpoint detector is disclosed in which two photocells are used in conjunction with analog multipliers and variable voltage sources, all under microprocessor control. The combination enables one to measure the ratio of intensity of different emission lines, as well as their individual outputs and alternative process monitoring signals.

摘要翻译： 公开了一种改进的光学端点检测器，其中两个光电管与模拟乘法器和可变电压源结合使用，全部在微处理器控制下。 该组合使得能够测量不同发射线的强度比，以及它们的各个输出和替代过程监测信号。

公开(公告)号：US4644165A

公开(公告)日：1987-02-17

申请号：US468279

申请日：1983-02-22

申请人： Malcolm G. Ross ,  Joe T. May ,  Steven D. Hale

发明人： Malcolm G. Ross ,  Joe T. May ,  Steven D. Hale

IPC分类号： G01J1/42 ,  G01J1/44 ,  G01J1/46

CPC分类号： G01J1/44 ,  G01J1/429 ,  G01J2001/4406 ,  G01J2001/4426 ,  G01J2001/446

摘要： An integrating photometer for measuring total exposures to ultraviolet radiation. The circuit for the photometer includes a threshold limiter to suppress operation of the integrator until the illumination level exceeds a predetermined threshold. A power saving circuit turns the photometer off when no illumination is received during a predetermined time interval.

摘要翻译： 用于测量紫外线辐射总曝光的积分光度计。 用于光度计的电路包括阈值限制器以抑制积分器的操作，直到照明水平超过预定阈值。 省电电路在预定时间间隔内没有接收到照明时，关闭光度计。

公开(公告)号：US4465370A

公开(公告)日：1984-08-14

申请号：US279215

申请日：1981-06-30

申请人： Yoshio Yuasa ,  Nobukazu Kawagoe

发明人： Yoshio Yuasa ,  Nobukazu Kawagoe

IPC分类号： G01J1/44 ,  G01J1/46 ,  H03M1/00 ,  G01R17/02 ,  G08C9/06

CPC分类号： G01J1/46 ,  G01J2001/4406 ,  G01J2001/446 ,  H03M1/50

摘要： A light measuring device includes one or more photodiodes, which generate current in relation to the received light, and at least one capacitor for integrating the generated current. The amount of charge stored in the at least one capacitor at the completion of the integration is roughly detected by the number of capacitors used and/or the voltage across the capacitor. A current source capable of producing different levels of current in accordance with the detected amount of charge is provided for changing the amount of charge stored in the at least one capacitor. The time needed to change the amount of charge stored in the at least one capacitor is measured so as to obtain the value of total amount of the change in the charge stored in the at least one capacitor and to thus obtain the value of the received amount of light intensity.

摘要翻译： 光测量装置包括相对于所接收的光产生电流的一个或多个光电二极管和用于积分所产生的电流的至少一个电容器。 通过所使用的电容器的数量和/或电容器两端的电压，粗略地检测在积分完成时存储在至少一个电容器中的电荷量。 提供能够根据检测到的电荷量产生不同电流电流的电流源，用于改变存储在至少一个电容器中的电荷量。 测量改变存储在至少一个电容器中的电荷量所需的时间，以获得存储在至少一个电容器中的电荷变化的总量的值，从而获得接收量的值 的光强度。