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1312 records (took 0.015 seconds)

    Double monochromator
    241.
    发明授权
    Double monochromator 失效
    双色单色仪

    公开(公告)号：US4453826A

    公开(公告)日：1984-06-12

    申请号：US346443

    申请日：1982-02-08

    Applicant: Wolfgang Witte

    Inventor： Wolfgang Witte

    IPC: G01J3/18

    CPC classification number: G01J3/18

    Abstract: A pre-monochromator having a grating monochromator includes an unsymmetrically ruled concave diffraction grating, by means of which a light source is directly imaged upon an exit slit. The diffraction grating is unsymmetrical with respect to the distribution of the grating constants such that the image distance remains substantially constant during the rotation of the diffraction grating.

    Abstract translation: 具有光栅单色仪的预单色仪包括不对称刻槽的凹面衍射光栅，通过该光栅将光源直接成像在出射狭缝上。 衍射光栅相对于光栅常数的分布是不对称的，使得在衍射光栅的旋转期间图像距离保持基本恒定。

    Monochromator
    242.
    发明授权
    Monochromator 失效
    单色器

    公开(公告)号：US4310244A

    公开(公告)日：1982-01-12

    申请号：US125010

    申请日：1980-02-27

    Applicant: Charles V. Perkins ,  John R. Firth

    Inventor： Charles V. Perkins ,  John R. Firth

    IPC: G01J3/02 ,  G01J3/06 ,  G01J3/18 ,  G01J3/42

    CPC classification number: G01J3/18

    Abstract: An Ebert monochromator for a spectrophotometer in which the diffraction grating is positioned off of the central optical axis of the collimator mirror by interpositioning a plane mirror between the collimator mirror and the diffraction grating. The plane mirror may be movable to select one of several diffraction gratings. By arranging the diffraction grating about an axis parallel with the central optical axis, a simple mechanical wavelength drive system with a common cam shaft driving the grating, a filter holder, and a rotatable slit plate can be provided. Further gratings may be driven from the cam shaft as may also the movable plane mirror which selects them.

    Abstract translation: 用于分光光度计的Ebert单色仪，其中衍射光栅通过在准直器反射镜和衍射光栅之间插入平面镜而远离准直器反射镜的中心光轴。 平面镜可以是可移动的，以选择几个衍射光栅中的一个。 通过围绕与中心光轴平行的轴布置绕射光栅，可以提供具有驱动光栅的公共凸轮轴，过滤器保持器和可旋转狭缝板的简单的机械波长驱动系统。 可以从凸轮轴驱动另外的光栅，也可以选择它们的可移动平面镜。

    Spectrophotometer
    243.
    发明授权
    Spectrophotometer 失效
    分光光度计

    公开(公告)号：US4305663A

    公开(公告)日：1981-12-15

    申请号：US125011

    申请日：1980-02-27

    Applicant: Charles V. Perkins ,  John R. Firth

    Inventor： Charles V. Perkins ,  John R. Firth

    IPC: G01J3/06 ,  G01J3/18 ,  G01J3/42 ,  G01J3/08

    CPC classification number: G01J3/08 ,  G01J3/06 ,  G01J3/18 ,  G01J3/42

    Abstract: A dual beam spectrophotometer includes a radiation chopper, a monochrometer, and a diffraction grating moved by a stepper motor. The chopper includes a gate pulse generator which produces gate pulses G.sub.S and G.sub.R corresponding to periods during which radiation from the source passes through a sample cell and a reference cell respectively. A stepper motor drive circuit produces pulses to step the stepper motor which are synchronized with the chopping cycle by means of the G.sub.R and G.sub.S pulses. The stepper motor is arranged to step an equal number of times in each half of a chopping cycle. A further condition which is preferably satisfied is that the first pulse of a sequence should start in the opposite half of the chopping cycle from that in which the first pulse started in a previous chopping cycle. At low stepping rates the motor will step twice in one chopping cycle and then pause for several cycles before again stepping twice.

    Abstract translation: 双光束分光光度计包括辐射斩光器，单色仪和由步进电机驱动的衍射光栅。 斩波器包括门脉冲发生器，其产生对应于来自源的辐射通过样本池和参考单元的周期的栅极脉冲GS和GR。 步进电机驱动电路通过GR和GS脉冲产生脉冲以步进与斩波周期同步的步进电机。 步进电机被布置成在斩波周期的每一半中相等次数。 优选满足的另一个条件是序列的第一个脉冲应该在斩波周期的相反一半开始，其中第一个脉冲在先前的斩波周期中开始。 在低步进率下，电机将在一个斩波周期中步进两次，然后暂停几个周期，然后再次步进两次。

    Multi-path monochromator
    244.
    发明授权
    Multi-path monochromator 失效
    多路单色仪

    公开(公告)号：US4268170A

    公开(公告)日：1981-05-19

    申请号：US76612

    申请日：1979-09-18

    Applicant: Bruce K. Flint

    Inventor： Bruce K. Flint

    IPC: G01J3/04 ,  G01J3/08 ,  G01J3/18

    CPC classification number: G01J3/08 ,  G01J3/021 ,  G01J3/04 ,  G01J3/18

    Abstract: A monochromator has three ports or slits including two entrance slits and an exit slit. A single mirror and a diffraction grating define a first, folded path between an entrance slit on one side of the housing and an exit slit on the opposite side of the housing. The mirror is movable in and out of a second path between the second entrance slit and the grating so that a second path may be completed from the second entrance slit to the grating and thence to the exit slit. Alternatively two of the ports may be used as exit slits and one as an entrance slit.

    Abstract translation: 单色器具有包括两个入口狭缝和出口狭缝的三个端口或狭缝。 单个反射镜和衍射光栅在壳体一侧的入口狭缝与壳体相对侧上的出口狭缝之间形成第一折叠路径。 反射镜可以在第二入口狭缝和光栅之间的第二路径中移动和移出，使得可以从第二入口狭缝到格栅完成第二路径，从而到达出口狭缝。 或者，两个端口可以用作出口狭缝，一个用作入口狭缝。

    Wide band grating spectrometer
    245.
    发明授权
    Wide band grating spectrometer 失效
    宽带光栅光谱仪

    公开(公告)号：US4060327A

    公开(公告)日：1977-11-29

    申请号：US722944

    申请日：1976-09-13

    Applicant: Lawrence Jacobowitz ,  Einar S. Mathisen ,  Lawrence D. Thorp

    Inventor： Lawrence Jacobowitz ,  Einar S. Mathisen ,  Lawrence D. Thorp

    IPC: G01J3/427 ,  G01J3/10 ,  G01J3/18 ,  G01J3/28 ,  G01J3/36 ,  G01J3/42 ,  G01J3/12

    CPC classification number: G01J3/36 ,  G01J3/10 ,  G01J3/18 ,  G01J3/2803 ,  G01J3/0294

    Abstract: A spectrophotometer includes an illumination section for illuminating a test sample, and a spectrometer portion for receiving light from a test sample and measuring the radiant energy thereof as a function of wavelength. The spectrometer includes an entrance slit and two stationary gratings for dispersing light admitted through the slit into two separate dispersed beams or spectra. The separate beams are focused upon linear arrays of photodiodes providing outputs proportional to the intensity of the light rays at the different wavelengths received thereby. The gratings produce different primary orders of dispersion so that the efficiency of operation thereof is relatively high across a relatively wide band of radiant energy.

    Abstract translation: 分光光度计包括用于照射测试样品的照明部分和用于接收来自测试样品的光并且测量其作为波长的函数的辐射能的光谱仪部分。 光谱仪包括入口狭缝和两个固定光栅，用于将通过狭缝进入的光分散成两个分开的分散光束或光谱。 单独的光束聚焦在光电二极管的线性阵列上，提供与由其接收的不同波长的光线的强度成比例的输出。 光栅产生不同的一阶分散，使得其在相对较宽的辐射能量范围内的操作效率相对较高。

    Spectrometer in which a desired number of spectral lines are focused at one fixed output slit
    246.
    发明授权
    Spectrometer in which a desired number of spectral lines are focused at one fixed output slit 失效
    在一个固定的输出缝隙上聚焦了所需数量的光谱线的光谱仪

    公开(公告)号：US3791737A

    公开(公告)日：1974-02-12

    申请号：US3791737D

    申请日：1972-06-16

    Applicant: JOHANSSON A

    Inventor： JOHANSSON A

    IPC: G01J3/18 ,  G01J3/40 ,  G01J3/12

    CPC classification number: G01J3/18

    Abstract: A spectrometer where spectral lines within a wide wavelength range with a high resolution can be focused at one fixed output slit by using a diffraction grating which consists of separate areas having different numbers of grooves per unit length, the grating being arranged to refract spectral lines in superimposition or in alignment with each other, the instrument being suitable for flame photometer determination of substances.

    Abstract translation: 一种光谱仪，其中具有高分辨率的宽波长范围内的光谱线可以通过使用衍射光栅聚焦在一个固定的输出狭缝处，该衍射光栅由每单位长度具有不同数量的凹槽的分离区域组成，该光栅被布置成折射光谱线 叠加或相互对准，仪器适用于火焰光度计测定物质。

    Grating drive mechanism
    248.
    发明授权
    Grating drive mechanism 失效
    磨光机构

    公开(公告)号：US3614227A

    公开(公告)日：1971-10-19

    申请号：US3614227D

    申请日：1969-07-25

    Applicant: CARY INSTRUMENTS

    Inventor： GEORGE KENYON P ,  SIEGLER EDOUARD HORACE JR

    IPC: G01J3/06 ,  G01J3/18 ,  G01J3/42

    CPC classification number: G01J3/18 ,  G01J3/06

    Abstract: The invention concerns an optical grating drive apparatus wherein a carriage for multiple diffraction gratings is movable between a plurality of locations, there being stops to limit carriage movement at such locations in which different gratings are selectively presented in the path of an incident beam; also a plurality of cam followers are shiftable relative to rotary cam means between positions in which different followers selectively engage the cam means and are displaced in response to cam means rotation; the followers and carriage have operative interconnection such that when a selected follower is engaged with the cam means the carriage may occupy alternate locations in order to selectively present corresponding gratings to the beam path; and displacement of a selected follower in response to cam rotation effects rotation of a selected grating in the beam path.

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