Simultaneous double grating spectrometer with solid-state sensors or photomultiplier tubes
    1.
    发明授权
    Simultaneous double grating spectrometer with solid-state sensors or photomultiplier tubes 有权
    具有固态传感器或光电倍增管的同时双光栅光谱仪

    公开(公告)号:US06614528B1

    公开(公告)日:2003-09-02

    申请号:US09447171

    申请日:1999-11-22

    Applicant: Wolfram Bohle

    Inventor: Wolfram Bohle

    CPC classification number: G01J3/36 G01J3/20

    Abstract: In order to extend the available spectral range and to optimize spectral resolution while retaining a compact spectrometer setup, two diffraction gratings are operated with congruent focal curves in a Paschen-Runge geometry. The spectrometer features only one entrance slit and allows an adequate adaptation of the covered spectral range to the demands of analytical spectrometry. Apart from photomultiplier tubes commercial solid-state linear array sensors placed tangential at the Rowland circle are used for simultaneous detection of the spectrum. By employing angular cut cylindrical mirrors the radiation is deflected by 90% upward or downward in an alternating series. In this way two effects are achieved, an almost complete detection of the spectrum firstly and secondly a gain of intensity by focusing of radiation perpendicular to the plane of dispersion.

    Abstract translation: 为了扩展可用的光谱范围并优化光谱分辨率,同时保持紧凑的光谱仪设置,两个衍射光栅以Paschen-Runge几何中的全局焦点曲线运行。 光谱仪仅具有一个入口狭缝,并允许覆盖的光谱范围适用于分析光谱法的要求。 除了光电倍增管外,商业固态线性阵列传感器放置在Rowland圆圈上切线,用于同时检测光谱。 通过采用角切圆柱镜,辐射以交替的方式向上或向下偏转90%。 以这种方式实现了两个效果,首先对光谱进行几乎完全的检测,其次是通过垂直于色散平面的辐射的聚焦获得强度增益。

    Monochromator and spectrometric method

    公开(公告)号:US06549281B2

    公开(公告)日:2003-04-15

    申请号:US09870954

    申请日:2001-05-30

    Applicant: Isao Tokumoto

    Inventor: Isao Tokumoto

    CPC classification number: G01J3/18

    Abstract: In the monochromator, when measured beam which is diffracted by a plane diffraction grating is collected by a collimator to be returned, the measured beam is displaced by a displacement member in a direction parallel to rulings of the plane diffraction grating and is passed through a first cut-off slit having a slit of a predetermined width formed in a direction perpendicular to the direction of the rulings.

    Imaging and analyzing parameters of small moving objects such as cells
    3.
    发明授权
    Imaging and analyzing parameters of small moving objects such as cells 有权
    成像和分析细胞等小移动物体的参数

    公开(公告)号:US06473176B2

    公开(公告)日:2002-10-29

    申请号:US09820434

    申请日:2001-03-29

    Abstract: Light from an object such as a cell moving through an imaging system is collected and dispersed so that it can be imaged onto a detector. The light can be emitted from a luminous object or can be light from a light source that has been scattered or not absorbed by the object or can include a light emission by one or more probes within or on the object. Multiple objects passing through the imaging system can be imaged, producing both scatter images and dispersed images at different locations on one or more detectors. In one embodiment, the detector is divided into a plurality of zones so that each of a plurality of different images are spectrally dispersed onto a different zone of the detector.

    Abstract translation: 来自诸如移动通过成像系统的细胞的物体的光被收集和分散,使得其可以成像到检测器上。 光可以从发光物体发射,或者可以是来自被物体散射或不被吸收的光源的光,或者可以包括物体内或物体上的一个或多个探针的发光。 通过成像系统的多个物体可被成像,在一个或多个检测器上的不同位置产生分散图像和分散图像。 在一个实施例中,检测器被分成多个区域,使得多个不同图像中的每一个被频谱分散到检测器的不同区域上。

    Embedded data acquisition and control system for non-invasive glucose prediction instrument
    4.
    发明授权
    Embedded data acquisition and control system for non-invasive glucose prediction instrument 失效
    非侵入式葡萄糖预测仪的嵌入式数据采集和控制系统

    公开(公告)号:US06587199B1

    公开(公告)日:2003-07-01

    申请号:US09513551

    申请日:2000-02-25

    Applicant: Ui Luu

    Inventor: Ui Luu

    CPC classification number: G01J3/06

    Abstract: An embedded data acquisition and control system for a precision instruments, such as a non-invasive glucose prediction instrument is disclosed. One feature of the invention provides synchronization of stepper motor position and analog-to-digital converters. An embedded controller is provided that controls the stepper motor driver directly to minimize the wavelength shift error due to the asynchronous condition. The controller synchronizes the event of reading the A/D converters with each stepper motor position. Because the stepper motor controls the wavelength of the monochromator optical output, the net result is that each A/D conversion recorded by the embedded controller is precisely tracked to a specific wavelength. Another feature of the invention provides closed loop motor position control for enhanced system performance. In the closed loop system, a position encoder is coupled to the stepper motor shaft. The encoded position signal is processed by a digital encoder at the bipolar stepper motor drive, resulting in an actual position feedback to the embedded controller. Because the embedded controller has the position feedback, it can initiate the next step command as soon as the position feedback reaches its target. The step rate is increased by reducing the time delay that was set by a conservative value as indicated in the open loop control mode. One advantage of this method is to achieve highest speed in all load conditions without missing steps. A further feature of the invention provides optical Isolation to minimize motor noise. Thus, optical isolation is provided at a bipolar stepper motor drive and embedded controller interface. To maximize system sensitivity, optical isolation is implemented between the embedded controller and the stepper motor drive.

    Abstract translation: 公开了一种用于诸如非侵入式葡萄糖预测仪器的精密仪器的嵌入式数据采集和控制系统。 本发明的一个特征提供了步进电机位置和模数转换器的同步。 提供了一种嵌入式控制器,可以直接控制步进电机驱动器,以最小化由异步状态引起的波长偏移误差。 控制器同步读取A / D转换器与每个步进电机位置的事件。 由于步进电机控制单色器光输出的波长,所以最终的结果是嵌入式控制器记录的每个A / D转换被精确跟踪到特定的波长。 本发明的另一个特征提供闭环电动机位置控制,以提高系统性能。 在闭环系统中,位置编码器连接到步进电机轴上。 编码位置信号由双极步进电机驱动器上的数字编码器处理,导致对嵌入式控制器的实际位置反馈。 由于嵌入式控制器具有位置反馈功能,因此一旦位置反馈到达目标位置即可启动下一步命令。 通过减少由开环控制模式中指示的保守值设置的时间延迟来增加步进速率。 该方法的一个优点是在所有负载条件下实现最高速度,而不会丢失步骤。 本发明的另一个特征是提供光隔离以最小化电机噪声。 因此,在双极步进电机驱动器和嵌入式控制器接口处提供光隔离。 为了最大化系统灵敏度,在嵌入式控制器和步进电机驱动器之间实现光隔离。

    Arrangement for simultaneous analysis of several optical lines
    6.
    发明授权
    Arrangement for simultaneous analysis of several optical lines 有权
    同时分析几条光线的布置

    公开(公告)号:US06690468B1

    公开(公告)日:2004-02-10

    申请号:US09614339

    申请日:2000-07-12

    CPC classification number: G01J3/12 G01J3/0224 G01J3/0294

    Abstract: An optical spectrum analyzer of novel design, in which several different spectra can be measured and analyzed simultaneously. A measuring signal is used as a reference signal for calibrating the optical spectrum analyzer. The light rays are admitted via a coupling device with several coupling apertures arranged in a line; and via a separate decoupling device comprising respective decoupling apertures arranged in a line, the light rays are decoupled. Height offset is realized by a 90° deviation prism. The arrangement makes possible simultaneous analysis of several optical lines with little retroreflection as well as uninterrupted calibration of the measuring process.

    Abstract translation: 一种新颖设计的光谱分析仪,其中可以同时测量和分析几种不同的光谱。 测量信号用作校准光谱分析仪的参考信号。 光线通过耦合装置进入,多个耦合孔布置成一条线; 并且经由单独的去耦装置,其包括排列成一行的各自的去耦孔,光线被解耦。 高度偏移由90°偏差棱镜实现。 该布置使得可以同时分析几个具有很小逆向反射的光线以及测量过程的不间断校准。

    Optical filter for raman spectroscopy
    8.
    发明授权
    Optical filter for raman spectroscopy 失效
    拉曼光谱滤光片

    公开(公告)号:US06657724B1

    公开(公告)日:2003-12-02

    申请号:US09530265

    申请日:2000-05-16

    CPC classification number: G01J3/44 G01J3/18

    Abstract: An optical filter is provided in the form of a subtractive double monochromator. In each dispersive stage, a concave mirror focuses light between a diffraction grating and a transfer mirror between the stages. Light which misses the transfer mirror is rejected. To reduce aberrations over a wide bandwidth, the radius of curvature R of the mirror is centered on the grating and the transfer mirror has a radius of curvature R/2 and is located midway between the mirror and the grating. The mirror 34 thus coincides with the locus of the focus of the spectral image in both stages.

    Abstract translation: 滤光器以减色双色单元的形式提供。 在每个色散阶段,凹面镜将光线聚焦在衍射光栅和阶段之间的转印镜之间。 错过传输镜的光线被拒绝。 为了减小宽带宽上的像差,镜的曲率半径R以光栅为中心,传输镜具有曲率半径R / 2,并位于反射镜与光栅之间。 因此,反射镜34在两个阶段中与光谱图像的焦点的轨迹重合。

    Wavelength measurement by dispersion timing
    9.
    发明授权
    Wavelength measurement by dispersion timing 失效
    通过色散定时进行波长测量

    公开(公告)号:US06433869B1

    公开(公告)日:2002-08-13

    申请号:US09465998

    申请日:1999-12-17

    CPC classification number: G01J9/00

    Abstract: A novel wavelength measurement method wherein an optical pulse is launched into a dispersive medium with known dispersion properties, such as a dispersion compensating fibre or a dispersion compensating Bragg grating. The specific wavelength of the dispersion-induced light beam is obtained by measuring the propagation time delay through the dispersive medium and relating that propagation time to the calibrated dispersive medium.

    Abstract translation: 一种新颖的波长测量方法,其中将光脉冲发射到具有已知色散特性的色散介质中,例如色散补偿光纤或色散补偿布拉格光栅。 通过测量通过分散介质的传播时间延迟并将该传播时间与校准的色散介质相关联,获得色散诱导光束的特定波长。

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