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    Atomic absorption spectrophotometer
    41.
    发明授权
    Atomic absorption spectrophotometer 失效
    原子吸收分光光度计

    公开(公告)号：US4508451A

    公开(公告)日：1985-04-02

    申请号：US450489

    申请日：1982-12-16

    Applicant: Trevor J. Stockdale

    Inventor： Trevor J. Stockdale

    IPC: G01J1/36 ,  G01N21/31 ,  G01J3/42 ,  G01N21/72

    CPC classification number: G01N21/3103 ,  G01J1/36

    Abstract: In atomic absorption spectrophotometer, a reference path may be provided for radiation which excludes the flame. This radiation provides a signal from a detector which varies only with the instrumental drift produced by variations in the radiation source brightness and by variations in detector gain. The signal can be used to compensate for drift in other signals received through a sample path including the flame. In the present invention, radiation passes through the sample path continuously during measurement, and only through the reference path between sample measurements. Movable mirrors shift the radiation between the paths upon externally applied commands. Conveniently, the reference path measurement is made while the flame is stabilized during the change between samples. The reference path measurements are stored and used to correct for drift.

    Abstract translation: 在原子吸收分光光度计中，可以提供不包括火焰的辐射的参考路径。 这种辐射提供来自检测器的信号，其仅随着辐射源亮度的变化和检测器增益的变化产生的仪器漂移而变化。 该信号可用于补偿通过包括火焰的采样路径接收的其他信号中的漂移。 在本发明中，辐射在测量期间连续通过样品路径，并且仅通过样品测量之间的参考路径。 可移动的镜子在外部施加的命令之间使辐射在路径之间移动。 方便地，在样品间的变化期间火焰稳定时进行基准路径测量。 参考路径测量被存储并用于校正漂移。

    Spectrophotometer system having power line synchronization
    42.
    发明授权
    Spectrophotometer system having power line synchronization 失效
    分光光度计系统具有电力线同步

    公开(公告)号：US4332470A

    公开(公告)日：1982-06-01

    申请号：US128289

    申请日：1980-03-07

    Applicant: Morteza M. Chamran ,  Larkin B. Scott ,  Paul B. Williams ,  Michael A. Ford

    Inventor： Morteza M. Chamran ,  Larkin B. Scott ,  Paul B. Williams ,  Michael A. Ford

    IPC: G01J1/36 ,  G01J3/42 ,  G01J3/08

    CPC classification number: G01J3/42 ,  G01J1/36

    Abstract: A light chopper for chopping the monochromatic light beam of a spectrophotometer system, has a rotatable shaft driven by a synchronous motor at a frequency proportional to the power line frequency. An aperture bearing disc rotates with the shaft in relation to a photocell/detector array for generating digital timing signals for use by a microcomputer to control the tasks of the spectrophotometer system in synchronism with line frequency. The microcomputer monitors line frequency for responsively programming a programmable divider for generating an index signal for proportionally sequencing the wavelength of the monochromatic beam through a predetermined spectral range.The rotatable shaft is coupled to the synchronous motor via a mechanical pin drive and a set of attracting magnets which are spaced in face confronting relation at the point of coupling for providing compliance and damping between the coupled shaft and synchronous motor, thus minimizing phase jitter of the timing system and permitting rejection of time frequency stray circuit pickup.

    Abstract translation: 用于切割分光光度计系统的单色光束的光斩波器具有由同步电动机以与电力线频率成比例的频率驱动的可旋转轴。 孔轴承盘相对于光电池/检测器阵列与轴一起旋转，用于产生数字定时信号，供微型计算机用于与线路频率同步地控制分光光度计系统的任务。 微型计算机监视线路频率以响应地编程可编程分频器，用于产生索引信号，以对通过预定光谱范围的单色光束的波长进行比例排序。 可旋转轴通过机械销驱动器和一组吸引磁铁联接到同步电动机，这些吸引磁体在联接点处以面对面的关系间隔开，以在联接轴和同步电动机之间提供顺应性和阻尼，从而最小化相位抖动 定时系统和允许拒绝时频杂散电路拾取。

    Chopper arrangement for atomic absorption spectrophotometer
    43.
    再颁专利
    Chopper arrangement for atomic absorption spectrophotometer 失效
    斩波排列用于原子吸收分光光度计

    公开(公告)号：USRE30051E

    公开(公告)日：1979-07-24

    申请号：US819365

    申请日：1977-07-27

    Applicant: Werner K. Lahmann

    Inventor： Werner K. Lahmann

    IPC: G01J1/36 ,  G01N21/31

    CPC classification number: G01N21/3103 ,  G01J1/36

    Abstract: An atomic absorption spectrophotometer incorporating discrimination against "background" absorption, i.e., absorption not caused by the resonant line absorption by the element being measured. The device includes a resonant line emitting source (e.g., a hollow cathode lamp) and a continuous spectrum light source (e.g., a deuterium lamp), a monochromator and a detector system. The improvement comprises a specific chopper arrangement which sequentially causes: (a) the resonant line light from the hollow cathode lamp to go to the sample path, (b) this light to go to the reference path, (c) the continuous spectrum light from the deuterium lamp to go to the reference path, and finally (d) the continuous spectrum light to go to the sample path. By comparing the light intensities during intervals (c) and (d) the effect of the background absorption can be determined and compensated for so as to determine the relationship between (a) and (b) free of the effect of such background absorption. The specific improvement includes a sector mirror and disk-shaped mask which are conjointly rotated in the angularly intersecting paths of the radiation from the cathode lamp and the deuterium lamp.

    Chopper arrangement for atomic absorption spectrophotometer
    45.
    发明授权
    Chopper arrangement for atomic absorption spectrophotometer 失效
    原子吸收分光光度计的选择器布置

    公开(公告)号：US3901601A

    公开(公告)日：1975-08-26

    申请号：US43533874

    申请日：1974-01-21

    Applicant: BODENSEEWERK PERKIN ELMER CO

    Inventor： LAHMANN WERNER K

    IPC: G01J1/36 ,  G01N21/31 ,  G01J3/42

    CPC classification number: G01J1/36 ,  G01N21/3103

    Abstract: An atomic absorption spectrophotometer incorporating discrimination against ''''background'''' absorption, i.e., absorption not caused by the resonant line absorption by the element being measured. The device includes a resonant line emitting source (e.g., a hollow cathode lamp) and a continuous spectrum light source (e.g., a deuterium lamp), a monochromator and a detector system. The improvement comprises a specific chopper arrangement which sequentially causes: (a) the resonant line light from the hollow cathode lamp to go to the sample path, (b) this light to go to the reference path, (c) the continuous spectrum light from the deuterium lamp to go to the reference path, and finally (d) the continuous spectrum light to go to the sample path. By comparing the light intensities during intervals (c) and (d) the effect of the background absorption can be determined and compensated for so as to determine the relationship between (a) and (b) free of the effect of such background absorption. The specific improvement includes a sector mirror and disk-shaped mask which are conjointly rotated in the angularly intersecting paths of the radiation from the cathode lamp and the deuterium lamp.

    Absorption photometer
    46.
    发明授权
    Absorption photometer 失效
    吸收光度计

    公开(公告)号：US3865494A

    公开(公告)日：1975-02-11

    申请号：US36054373

    申请日：1973-05-15

    Applicant: USTAV PRO VYZKUM RUD

    Inventor： PAVLICEK MIROSLAV ,  ROSENBAUM MIROSLAV

    IPC: G01N21/27 ,  G01J1/36 ,  G01N21/25 ,  G01N30/74 ,  G01N21/24

    CPC classification number: G01J1/36 ,  G01N21/255

    Abstract: A twin beam photometer using a discharge tube, the radiating flux of which is modulated by magnetic means. The photometer selects from this modulated radiating flux two radiating beams, the distance from each other being determined by the amplitude of the radiating flux. Measuring cells are placed in the track of each radiating beam; the radiation from both radiating beams is received in a radiation detector.

    Abstract translation: 使用放电管的双光束光度计，其辐射通量由磁性装置调制。 光度计从该调制的辐射通量中选择两个辐射束，彼此的距离由辐射通量的幅度决定。 测量单元被放置在每个辐射束的轨道中; 来自两个辐射束的辐射被接收在辐射检测器中。

    Optical switch mechanism
    47.
    发明授权
    Optical switch mechanism 失效
    光开关机构

    公开(公告)号：US3700304A

    公开(公告)日：1972-10-24

    申请号：US3700304D

    申请日：1970-08-03

    Applicant: BULOVA WATCH CO INC

    Inventor： DOSTAL FRANK ,  BADOWSKI CHARLES

    IPC: G01J1/36 ,  H04B10/00 ,  G02B17/00

    CPC classification number: H04B10/00 ,  G01J1/36

    Abstract: An optical switching mechanism including a vibrator having a pair of parallel reeds which are sustained in vibration at a rate determined by the resonance characteristic of the vibrator, the free ends of the reeds being ganged together by a headpiece. The arrangement is such that as the reeds sway simultaneously from side to side, the headpiece is caused to undergo a translating movement substantially free of an arcuate component. Mounted on the headpiece is a triangular reflecting element whose apex, in the static state of the vibrator, is aligned with a beam of incident radiant energy, whereby as the element, in the dynamic state, shifts to either side of the beam, the beam is deflected by the angled faces of the element in alternate directions.

    Abstract translation: 一种光学切换机构，包括具有一对平行的簧片的振动器，所述一对平行的簧片以由振动器的共振特性确定的速率在振动中维持，所述簧片的自由端通过头盔组合在一起。 该布置使得当簧片同时从一侧摇动到另一侧时，使头架经受基本上没有弓形部件的平移运动。 安装在头盔上的是三角形反射元件，其在振动器的静态中的顶点与入射辐射能的光束对准，由此当处于动态状态的元件移动到光束的任一侧时，光束 被元件的成角度的表面沿交替的方向偏转。

    Compound tine for tuning fork or the like
    48.
    发明授权
    Compound tine for tuning fork or the like 失效
    用于调音琴或类似的复合音色

    公开(公告)号：US3628781A

    公开(公告)日：1971-12-21

    申请号：US3628781D

    申请日：1969-10-03

    Applicant: PHILAMON INC

    Inventor： GRIB BORIS F

    IPC: G01J1/36 ,  G04C3/10 ,  G10G7/02 ,  F16F1/16

    CPC classification number: G01J1/36 ,  G04C3/102 ,  G10G7/02

    Abstract: A light modulator structure employs a cross compound tine tuning fork structure arranged to produce the effect that the ends of the tines have exaggerated rotational motion with respect to each other and this motion is exploited by mirrors secured to the ends of tines to scan over a relatively wide angle a light beam projected to reflect successively from the two mirrors. A similar compound structure is incorporated in a simple scale having no frictionally moving parts. The scale compound cantilever is parallel rather than crossed and substantially eliminates scale pan rotation.

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