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    Multiple function spectrophotometer having an automatically stabilized chopper disc
    151.
    发明授权
    Multiple function spectrophotometer having an automatically stabilized chopper disc 失效
    具有自动稳定切割盘的多功能分光光度计

    公开(公告)号：US3787121A

    公开(公告)日：1974-01-22

    申请号：US3787121D

    申请日：1972-12-18

    Applicant: BAXTER LABORATORIES INC

    Inventor： MARCUS B ,  LOWY G ,  CONLON J

    IPC: G01J3/02 ,  G01J3/06 ,  G01J3/08 ,  G01J3/12 ,  G01J3/42 ,  G01J3/427

    CPC classification number: G01J3/02 ,  G01J3/0232 ,  G01J3/0237 ,  G01J3/06 ,  G01J3/08 ,  G01J3/12 ,  G01J3/42 ,  G01J3/427

    Abstract: A spectrophotometer of the two-beam type employing two adjustable monochromators and employing a rotating chopper disc to provide time-sharing operation, such as split-beam operation, dual wavelength operation, or other desired modes of operation. The chopper disc motor is stabilized by a fiber optic feedback system and cooperating electronic system utilizing light beams reflected by the underside of the chopper disc and photo diodes responding to these reflections. The main optical system includes an adjustable lens element coupled to one of the monochromators to compensate for variations in refractive index of the lens element with wavelength. The electronic readout system is gated by the chopper disc stabilizing system to maintain synchronism of the readout signals with the two monochromatic excitation beams.

    Abstract translation: 采用两个可调单色器的双光束型分光光度计，并采用旋转斩光盘来提供分光操作，例如分光束操作，双波长操作或其它所需操作模式。 斩波盘电机由光纤反馈系统和协同电子系统稳定，利用由斩波盘的下侧反射的光束和响应于这些反射的光电二极管。 主光学系统包括耦合到单色仪中的一个的可调透镜元件，以补偿具有波长的透镜元件的折射率变化。 电子读出系统由斩波盘稳定系统门控，以保持读出信号与两个单色激发光束的同步。

    Optical spectrometer with transparent refracting chopper
    152.
    发明授权
    Optical spectrometer with transparent refracting chopper 失效
    光学测光仪与透明切割机

    公开(公告)号：US3669547A

    公开(公告)日：1972-06-13

    申请号：US3669547D

    申请日：1970-09-14

    Applicant: BELL TELEPHONE LABOR INC

    Inventor： SELL DARRELL DEAN

    IPC: G01J1/36 ,  G01J3/08

    CPC classification number: G01J1/36

    Abstract: A SENSITIVE AND VERSATILE APPARATUS IS DESCRIBED FOR MEASURING THE OPTICAL PROPERTIES OF MATERIALS. A TRANSPARENT REFRACTING CHOPPER IS USED TO ALTERNATELY DISPLACE THE RADIATION FROM THE SOURCE INTO THE SAMPLE AND REFERENCE BEAMS. BOTH TRANSMITTANCE AND REFLECTION MEASUREMENTS CAN BE MADE USING THIS APPARATUS.

    Radiant energy analyzer including means for offsetting and scaling the ratio of two signals
    154.
    发明授权
    Radiant energy analyzer including means for offsetting and scaling the ratio of two signals 失效
    辐射能量分析仪，包括两个信号比例放大和缩放的手段

    公开(公告)号：US3561845A

    公开(公告)日：1971-02-09

    申请号：US3561845D

    申请日：1969-06-02

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： BORONKAY ATTILA D ,  MATTHEWS KENNETH V

    IPC: G01J1/10 ,  G01J3/42 ,  G01J3/08

    CPC classification number: G01J3/42

    Abstract: THERE IS DISCLOSED A CIRCUIT IN A RADIANT ENERGY ANALYZER FOR OFFSETTING AND SCALING THE RATIO OF TWO SIGNALS. THE CIRCUIT IN PART COMPRISES A FIRST CHANNEL AND A SECOND CHANNEL AMPLIFYING DEVICE. A FIRST SIGNAL IS CONNECTED TO THE FIRST CHANNEL AMPLIFYING DEVICE THE OUTPUT OF WHICH IS CONNECTED TO A FIRST VOLTAGE DIVIDER COMPONENT. A SECOND SIGNAL IS CONNECTED TO THE SECOND CHANNEL AMPLIFYING DEVICE THE OUTPUT OF WHICH IS CONNECTED TO A SECOND VOLTAGE DIVIDER COMPONENT. THE SECOND DIVIDER IS CONNECTED TO THE SECOND CHANNEL AMPLIFYING DEVICE SO AS TO PROVIDE A PORTION OF THE SECOND CHANNEL AMPLIFYING DEVICE SIGNAL OUTPUT AS DEGENERATIVE FEEDBACK. THE FIRST DIVIDER IS CONNECTED TO THE SECOND CHANNEL AMPLIFYING DEVICE SO AS TO PROVIDE A PORTION OF THE FIRST CHANNEL AMPLIFYING DEVICE OUTPUT SIGNAL IN SERIES WITH THE SECOND CHANNEL AMPLIFYING DEVICE FEEDBACK. THE RATIO OF THE SECOND SIGNAL TO THE FIRST SIGNAL AT THE OUTPUT OF THE AMPLIFYING DEVICES IS EQUAL TO A SCALE FACTOR TIMES THE DIFFERENCE BETWEEN THE INPUT SIGNAL RATIO AND AN OFFSET TERM WHERE THE OFFSET IS DETERMINED BY THE FIRST DIVIDER AND THE SCALE FACTOR BY THE SECOND DIVIDER.

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