公开(公告)号：US20100102238A1

公开(公告)日：2010-04-29

申请号：US12452220

申请日：2008-06-25

Applicant: Shusuke Kanazawa ,  Musubu Ichikawa ,  Yoshio Taniguchi

Inventor： Shusuke Kanazawa ,  Musubu Ichikawa ,  Yoshio Taniguchi

IPC: G01T1/20

CPC classification number: G01N21/645 ,  G01J3/0254 ,  G01J3/0262 ,  G01N2201/0642 ,  G01N2201/065

Abstract: A luminescence quantum efficiency measuring instrument is provided for easily and surely changing luminescence of a luminescent sample exhibiting strong luminescence anisotropy into an isotropic luminescence and for accurately measuring the luminescence quantum efficiency of the luminescent sample. The luminescence quantum efficiency measuring instrument comprises an integrating sphere (1) having a center, an excitation light entrance window (2), and a detection probe end (3) connected to a spectroscope, the excitation light entrance window and the detection probe end being disposed in respective directions perpendicular to each other on a plane including the center, wherein a luminescent sample (5) is disposed inside the integrating sphere (1) and on a vertical line extending from the center and vertical to the plane, and a baffle plate (7) is disposed at a place through which the luminescent sample (5) is seen from the detection probe end (3).

Abstract translation: 提供发光量子效率测量仪器，用于容易且可靠地将发光强度各向异性的发光样品的发光变化为各向同性发光，并准确测量发光样品的发光量子效率。 发光量子效率测量仪器包括具有中心的积分球（1），激发光入射窗（2）和连接到分光镜的检测探头端（3），激发光入射窗和检测探针端为 设置在包括所述中心的平面上彼此垂直的各个方向上，其中发光样品（5）设置在所述积分球（1）内部并且在从所述中心和垂直于所述平面延伸的垂直线上，以及挡板 （7）设置在从检测探针端（3）看到发光试样（5）的位置。

公开(公告)号：US20090268202A1

公开(公告)日：2009-10-29

申请号：US12499049

申请日：2009-07-07

Applicant: Gregg A. Wagner

Inventor： Gregg A. Wagner

IPC: G01N21/49 ,  B01J19/12

CPC classification number: G01N15/0205 ,  G01N21/05 ,  G01N21/51 ,  G01N2021/0346 ,  G01N2201/0612 ,  G01N2201/0633 ,  G01N2201/0642

Abstract: A liquid particle counter for optically detecting an unconstrained particle suspended in a flowing liquid includes a sample chamber having a liquid inlet and a liquid outlet; a laser diode module producing a symmetrically collimated laser beam; a beam shaping optical system directing the laser beam at the sample chamber; and an optical detector located to detect light scattered by the particle in the sample chamber, the detector producing an electric signal characteristic of a parameter of the particle. The laser beam has an energy of a watt or more and passed through an aperture in a black glass aperture element in the sample chamber. The black glass aperture element removes diffracted and stray light from the beam without damage to the sample chamber.

Abstract translation: 用于光学检测悬浮在流动液体中的无约束粒子的液体颗粒计数器包括具有液体入口和液体出口的样品室; 产生对称准直激光束的激光二极管模块; 将激光束引导到样品室的光束整形光学系统; 以及光检测器，用于检测由样品室中的颗粒散射的光，该检测器产生特征为该粒子参数的电信号。 激光束具有瓦特或更高的能量，并且通过样品室中的黑色玻璃孔径元件中的孔。 黑色玻璃孔径元件从梁中去除衍射和杂散光，而不损坏样品室。

公开(公告)号：US07576857B2

公开(公告)日：2009-08-18

申请号：US10923339

申请日：2004-08-20

Applicant: Gregg A. Wagner

Inventor： Gregg A. Wagner

IPC: G01N21/00

CPC classification number: G01N15/0205 ,  G01N21/05 ,  G01N21/51 ,  G01N2021/0346 ,  G01N2201/0612 ,  G01N2201/0633 ,  G01N2201/0642

Abstract: A liquid particle counter for optically detecting an unconstrained particle suspended in a flowing liquid includes a sample chamber having a liquid inlet and a liquid outlet; a laser diode module producing a symmetrically collimated laser beam; a beam shaping optical system directing the laser beam at the sample chamber; and an optical detector located to detect light scattered by the particle in the sample chamber, the detector producing an electric signal characteristic of a parameter of the particle. The laser beam has an energy of a watt or more and passed through an aperture in a black glass aperture element in the sample chamber. The black glass aperture element removes diffracted and stray light from the beam without damage to the sample chamber.

Abstract translation: 用于光学检测悬浮在流动液体中的无约束粒子的液体颗粒计数器包括具有液体入口和液体出口的样品室; 产生对称准直激光束的激光二极管模块; 将激光束引导到样品室的光束整形光学系统; 以及光检测器，用于检测由样品室中的颗粒散射的光，该检测器产生特征为该粒子参数的电信号。 激光束具有瓦特或更高的能量，并且通过样品室中的黑色玻璃孔径元件中的孔。 黑色玻璃孔径元件从梁中去除衍射和杂散光，而不损坏样品室。

公开(公告)号：US07554665B2

公开(公告)日：2009-06-30

申请号：US12063126

申请日：2006-08-04

Applicant: Sipke Wadman

Inventor： Sipke Wadman

IPC: G01N21/47 ,  G01J1/04

CPC classification number: G01N21/474 ,  G01N21/274 ,  G01N21/57 ,  G01N2021/4714 ,  G01N2201/0618 ,  G01N2201/0642

Abstract: A parousiameter having a dual beam setup and method for use thereof is provided for producing measurements of optical parameters. The dual beam parousiameter includes a hemispherical dome enclosure 318 sealed at the bottom with a base 320. A radiation source 302 produces radiation in two beams, an illumination beam 304 for illuminating a sample surface 308 and a calibration beam 330 for providing optical characterization information about the illumination beam 304. Each beam is guided into the hemispherical dome enclosure 318 via separate optical paths. An optical imaging device 324 is positioned to acquire an image of scatter radiation 314 scattered by the sample surface 308 illuminated by the illumination beam 304, and acquire an image of the calibration beam, simultaneously. The calibration beam image is used to compensate for variability in optical output of the radiation source 302 when analyzing the scatter radiation data.

Abstract translation: 提供了具有双光束设置的方法和用于其的方法用于产生光学参数的测量。 双光束测光仪包括在底部与底座320密封的半球形圆顶罩壳31.辐射源302产生两个光束的辐射，用于照射样品表面308的照明光束304和用于提供关于 照明光束304.每个光束经由分离的光路被引导到半球形圆顶壳体318中。 定位光学成像装置324以获取被照明光束304照射的样本表面308散射的散射辐射314的图像，并且同时获取校准光束的图像。 当分析散射辐射数据时，校准光束图像用于补偿辐射源302的光输出的变化。

公开(公告)号：US07460234B2

公开(公告)日：2008-12-02

申请号：US11853682

申请日：2007-09-11

Applicant: David W. Larsen ,  Zhi Xu

Inventor： David W. Larsen ,  Zhi Xu

IPC: G01N21/00

CPC classification number: G01N30/74 ,  G01N21/0303 ,  G01N21/53 ,  G01N2030/847 ,  G01N2030/8494 ,  G01N2201/0642 ,  G01N21/47

Abstract: The invention concerns high sensitivity light scattering detection and its application to evaporative light scattering detection in liquid chromatography. The exemplary embodiment includes a detection cell to accept particles suspended in a gas stream and permit a polarized light beam to pass through a trajectory of the particles and gas stream. A sample light detector is disposed to detect light scattered in the detection cell. A light trap accepts the polarized beam after it passes through the detection cell. The light trap includes an elongated housing through which the polarized beam passes, and light absorptive material within the elongated housing. An absorptive filter is aligned such that the angle of incidence of the light beam upon the filter approximates Brewster's angle and the electric field vector of the beam is aligned with the plane of incidence between the beam and the filter. Other embodiments of the invention provide increased light collection. Embodiments of the invention include temperature-controlled entrance and exit ports that control particle trajectory. Embodiments of the invention include a reference cell disposed between a detection cell and a light trap, and the reference cell includes lensing and a spherical mirror to direct light toward a reference light detector. The reference light detector provides a reference signal that may be used with noise cancellation circuitry, operating in either voltage or current mode, to reduce light source noise in the sample signal.

Abstract translation: 本发明涉及高灵敏度光散射检测及其在液相色谱中的蒸发光散射检测中的应用。 该示例性实施例包括接收悬浮在气流中的颗粒并允许偏振光束通过颗粒和气流的轨迹的检测单元。 设置采样光检测器以检测在检测单元中散射的光。 光阱在其通过检测单元之后接受偏振光束。 光阱包括通过偏振光束通过的细长壳体和细长壳体内的光吸收材料。 对准吸收滤光器，使得光束在滤光片上的入射角近似于布鲁斯特角，并且光束的电场矢量与光束与滤光片之间的入射平面对准。 本发明的其它实施例提供增加的光收集。 本发明的实施例包括控制粒子轨迹的温度控制的入口和出口。 本发明的实施例包括设置在检测单元和光阱之间的参考单元，并且参考单元包括透镜和球面镜，以将光引向参考光检测器。 参考光检测器提供可用于噪声消除电路的参考信号，其以电压或电流模式工作，以减少采样信号中的光源噪声。

公开(公告)号：US20080246943A1

公开(公告)日：2008-10-09

申请号：US12001606

申请日：2007-12-11

Applicant: Steven P. Kaufman ,  Arkady Savikovsky ,  Christopher C. Chagaris ,  Joel Stave

Inventor： Steven P. Kaufman ,  Arkady Savikovsky ,  Christopher C. Chagaris ,  Joel Stave

IPC: G01C3/08

CPC classification number: G01B11/2518 ,  G01N21/4738 ,  G01N21/9515 ,  G01N21/95623 ,  G01N2021/8411 ,  G01N2021/8472 ,  G01N2201/0642 ,  G02B26/101 ,  G02B27/2292 ,  G03B21/005 ,  G03B21/28 ,  G03B35/18 ,  G06T7/521 ,  H04N9/3129 ,  H04N9/3185 ,  H04N9/3194

Abstract: A 3D pulsed laser projection system scans an object to produce a dense 3D point cloud and projects a laser light beam onto an object as a glowing template. A high-sensitivity optical feedback system receives and detects a feedback beam of the output beam light diffusely reflected from the object. The feedback light and projected beam share the same beam path between steering mirrors and the object. A light suppression component controls stray scattered light, including ambient light, from being detected. A time-of-flight measurement subsystem provides a distance-to-object measurement for projected pulses. An acousto-optical modulator, variable gain detected signal amplification and variable photo-detector power together produce a dynamic range for detected reflected feedback signals of at least 100,000, and up to 500,000. Optical fiber cables spatially filter scattered light and isolate the photo-detectors thermally. The laser is preferably pulsed at least 50 kHz, with sampling of the projected and feedback reflected optical pulse signals at a sampling rate of up to 10 gigasamples per second.

Abstract translation: 3D脉冲激光投影系统扫描物体以产生致密的3D点云，并将激光束投射到物体上作为发光模板。 高灵敏度的光学反馈系统接收并检测从物体漫反射的输出光束的反射光束。 反射光和投影光束在转向镜和物体之间共享相同的光束路径。 光抑制部件控制被检测的杂散散射光，包括环境光。 飞行时间测量子系统为投影脉冲提供距离对象测量。 声光调制器，可变增益检测信号放大和可变光电检测器功率一起为检测到的反射信号产生至少100,000，最高达500,000的动态范围。 光纤电缆在空间上过滤散射光，并将光电检测器隔离开。 激光器优选地脉冲至少50kHz，其中投影和反射的反射光脉冲信号的采样速率最高达每秒10吉比特。

公开(公告)号：US07081957B2

公开(公告)日：2006-07-25

申请号：US10820903

申请日：2004-04-08

Applicant: Adam E. Norton

Inventor： Adam E. Norton

IPC: G01N21/55 ,  G01J1/42

CPC classification number: G01N21/8806 ,  G01N21/55 ,  G01N21/9501 ,  G01N2201/0642

Abstract: An aperture for reducing tilt sensitivity in normal incidence optical metrology is formed to include one or more holes. The aperture is positioned to partially occlude one-half of the pupil of a normal incidence objective. A probe beam is projected to fill the pupil of the objective. The portion of the incident probe beam that passes through the aperture is reduced in cross-sectional profile. As a result, after reflection by the sample, that portion of the probe beam underfills the non-occluded portion of the pupil. The portion of the incident probe beam that passes through the non-occluded portion of the pupil overfills the occluded pupil upon reflect by the sample. The combination of underfilling and overfilling reduces the sensitivity of the objective to tilting of the sample.

Abstract translation: 形成用于降低正常入射光学测量中的倾斜灵敏度的孔，以包括一个或多个孔。 孔径定位成部分地遮挡法向入射物镜的瞳孔的一半。 投影探测光束以填充物镜的光瞳。 穿过孔的入射探针光束的部分在横截面轮廓上减小。 结果，在样品反射之后，探测光束的该部分底部填充瞳孔的未遮挡部分。 入射探测光束穿过瞳孔的未遮挡部分的部分，在被样品反射时，超过填充的瞳孔。 填充和过度填充的组合降低了物镜倾斜样品的灵敏度。

公开(公告)号：US06940590B2

公开(公告)日：2005-09-06

申请号：US10316188

申请日：2002-12-11

Applicant: Arthur E. Colvin, Jr. ,  Steven J. Walters

Inventor： Arthur E. Colvin, Jr. ,  Steven J. Walters

IPC: G01N21/64 ,  G01N21/77 ,  G01J1/42 ,  G01N21/01

CPC classification number: G01N21/645 ,  G01N21/6428 ,  G01N21/7703 ,  G01N2201/0642

Abstract: An optical sensor device for determining the presence or concentration of an analyte, contains a waveguide disposed over a light source and a light detector mounted on a surface of a substrate and separated by an internal baffle, wherein the waveguide has a thickness corresponding to a far field emission point of the light source as determined by a light shielding baffle between the light source and light detector. An analyte indicator matrix is disposed on the outer surface of the waveguide. The sensor device geometry takes advantage of only direct illumination of the indicator matrix, and direct collection of indicator matrix illumination, without any significant reflection by said waveguide. Undesirable light noise generated by the light source passes directly out of the device through the waveguide.

Abstract translation: 用于确定分析物的存在或浓度的光学传感器装置包含设置在光源上的波导和安装在基板的表面上并由内部挡板隔开的光检测器，其中波导具有对应于远的 由光源和光检测器之间的遮光挡板确定的光源的场发射点。 分析物指示矩阵设置在波导的外表面上。 传感器装置的几何形状仅利用指示矩阵的直接照明，并且直接收集指示矩阵照明，而不会被所述波导的任何明显的反射。 由光源产生的不良光线噪声通过波导直接从器件中流出。

公开(公告)号：US06831289B1

公开(公告)日：2004-12-14

申请号：US10130382

申请日：2002-08-26

Applicant: Kai-Uwe Preikszas ,  Andreas Siemens

Inventor： Kai-Uwe Preikszas ,  Andreas Siemens

IPC: G01N2149

CPC classification number: G01N15/0205 ,  G01N21/53 ,  G01N2201/0642

Abstract: The invention relates to a detector for scattered light, especially for detecting particles in a carrier medium. Said detector comprises a housing (1) and an inlet (3) and an outlet (5) in the housing (1). The carrier medium flows through the housing between said inlet and outlet and on a flow path (7). The inventive detector also comprises a light source (9) that directs light to a scattered light centre (11) which lies on the flow path (7). The inventive detector further comprises a receiver (13) for a portion of the light which is scattered onto particles in the scattered light centre (15) and a light trap (15) for light which is not scattered in the scattered light centre (11). The aim of the invention is to improve such a detector for scattered light in such a way that compact construction and high responsiveness are guaranteed. The light trap (15) can be embodied in two ways. According to a first embodiment, the light source (9) is arranged outside the flow path (7) and the centre axis (18) of the light cone (20) pertaining to the light source (9) extends at least partially parallel in relation to or on the centre line (58) of the flow path (7). The light trap (15) allocated to the light source (9) is part of the flow channel guiding the flow path (7). According to a second embodiment, the receiver (13) is arranged outside the flow path (7). The axis (14) of the receiver extends at least partially parallel in relation to or on the centre line (58) pertaining to the flow path (7). The light trap (23) allocated to the receiver (13) is part of the flow channel guiding the flow path (7).

Abstract translation: 本发明涉及一种用于散射光的检测器，特别是用于检测载体介质中的颗粒。 所述检测器包括在壳体（1）中的壳体（1）和入口（3）和出口（5）。 载体介质在所述入口和出口之间以及流动路径（7）上流过壳体。 本发明的检测器还包括将光引导到位于流路（7）上的散射光中心（11）的光源（9）。 本发明的检测器还包括用于散射在散射光中心（15）中的颗粒上的一部分光的接收器（13）和用于不散射在散射光中心（11）中的光的光阱（15） 。 本发明的目的是改进这种用于散射光的检测器，从而保证结构紧凑和响应性高。 光阱（15）可以以两种方式实现。 根据第一实施例，光源（9）布置在流路（7）的外侧，并且与光源（9）相关联的光锥（20）的中心轴线（18）至少部分平行延伸 到达或位于流动路径（7）的中心线（58）上。 分配给光源（9）的光阱（15）是引导流路（7）的流路的一部分。 根据第二实施例，接收器（13）设置在流路（7）的外侧。 接收器的轴线（14）相对于与流路（7）相关联的中心线（58）至少部分平行延伸。 分配给接收器（13）的光阱（23）是引导流路（7）的流路的一部分。

公开(公告)号：US20030214653A1

公开(公告)日：2003-11-20

申请号：US10420250

申请日：2003-04-22

Applicant: Hach Company

Inventor： Perry A. Palumbo ,  Paul D. Schlegel ,  Jeffrey M. Huhta ,  Richard P. Kolman

IPC: G01N021/00

CPC classification number: G01N21/51 ,  G01N2201/0642

Abstract: A turbidimeter having an arrangement of internal surfaces, optical surfaces, and optical restrictions to the field of view of both the illumination and the detector means to significantly improve the lower detection limit of the turbidimeter by reducing the detected signal due to stray light.

Abstract translation: 具有内部表面，光学表面和对照明和检测器装置的视野的光学限制的浊度计，通过减少由于杂散光引起的检测信号来显着地提高浊度计的较低检测限。