公开(公告)号：US5434666A

公开(公告)日：1995-07-18

申请号：US201642

申请日：1994-02-25

Applicant: Jon W. Carnahan ,  Brian A. Pelz

Inventor： Jon W. Carnahan ,  Brian A. Pelz

IPC: G01J3/12 ,  G01J3/18 ,  G01J3/20

CPC classification number: G01J3/20 ,  G01J3/1256

Abstract: A spectrometer is adapted to observe discrete wavelengths or spectral regions of a sample. The spectrometer includes a light source having spectral characteristics depending on the presence of a sample. A disperser consists of a chamber housing a diffraction grating in spaced relation to the light source and an entrance slit associated with the chamber for directing light from the source in a light path to be dispersed by the grating. An acousto-optic device is mounted in the chamber in the light path so that light traverses the device. A power supply applies an acoustic frequency to the acousto-optic device to set up a variation in refractive index within the acousto-optic device to deflect traversing light. A detector associated with the chamber is positioned relative to the grating to sense the presence of light where it appears after dispersion and to rapidly detect discrete wavelengths or spectral regions of the light.

Abstract translation: 光谱仪适于观察样品的离散波长或光谱区域。 光谱仪包括具有取决于样品存在的光谱特性的光源。 分散器包括容纳与光源间隔开的衍射光栅的腔室和与腔室相关联的入口狭缝，用于将来自光源的光源引导到由光栅分散的光路中。 声光装置安装在光路中的腔室中，使得光穿过该装置。 电源将声频施加到声光器件以建立声光器件内的折射率变化以偏转横穿光。 与腔室相关联的检测器相对于光栅定位以感测在分散之后出现的光的存在并且快速检测光的离散波长或光谱区域。

公开(公告)号：US5274435A

公开(公告)日：1993-12-28

申请号：US841421

申请日：1992-02-26

Applicant: Michael C. Hettrick

Inventor： Michael C. Hettrick

IPC: G01J3/18 ,  G01J3/20 ,  G02B5/18 ,  G21K1/06

CPC classification number: G02B5/1861 ,  G01J3/18 ,  G01J3/189 ,  G01J3/20 ,  G21K1/06 ,  G21K2201/06 ,  G21K2201/064

Abstract: An optical system and method comprising a diffraction grating which rotates about its surface normal to change the magnitude of the wavelength diffracted to an image location. At grazing incidence, such a rotation is determined to maintain the diffracted image in focus over a wide range in scanned wavelength. Monochromator and spectrometer embodiments include plane and curved surface gratings with both classical and varied-spaced groove patterns, and a variety of illumination geometries. In the simplest case, a grazing incidence monochromator is constructed in which a self-focusing classical spherical grating scans the value in wavelength which is transmitted between fixed slits located on the Rowland circle of the grating. The diffracted image remains in perfect focus over two octaves in wavelength at high efficiency, with both entrance and exit slits fixed in position, and the radiation aperture is constant.

Abstract translation: 一种光学系统和方法，包括围绕其表面法线旋转的衍射光栅，以将衍射的波长的大小改变为图像位置。 在掠入射处，确定这样的旋转以使衍射图像在扫描波长的宽范围内保持焦点。 单色器和光谱仪实施例包括具有经典和不同间隔的凹槽图案的平面和曲面光栅以及各种照明几何形状。 在最简单的情况下，构建了掠入射单色仪，其中自聚焦经典球形光栅扫描位于光栅的罗兰圆上的固定狭缝之间传输的波长值。 衍射图像以高效率保持在两个八度波长上的完美对焦，入射和出射狭缝均固定在适当位置，辐射孔径恒定。

公开(公告)号：US5159404A

公开(公告)日：1992-10-27

申请号：US801451

申请日：1991-12-02

Applicant: Reinhold Bittner

Inventor： Reinhold Bittner

IPC: G01J3/20 ,  G01J3/28 ,  G01J3/36

CPC classification number: G01J3/20 ,  G01J3/0259 ,  G01J3/2803

Abstract: A transparent carrier body of a diode-array spectrometer having a concave grating is configured as a biconvex lens and the diode array is mounted at a distance (d) to a second convex surface lying opposite the concave grating. Preferably, the radii of curvature (r.sub.1, r.sub.2) differ from each other only slightly. A simplified manufacture and adjustment is possible with good optical correction.

Abstract translation: 具有凹面光栅的二极管阵列光谱仪的透明载体构造为双凸透镜，并且二极管阵列以与凹光栅相对的第二凸表面的距离（d）安装。 优选地，曲率半径（r1，r2）仅稍微不同。 可以通过良好的光学校正进行简化的制造和调整。

公开(公告)号：US5017785A

公开(公告)日：1991-05-21

申请号：US447188

申请日：1989-12-07

Applicant: Jaakko Rasanen

Inventor： Jaakko Rasanen

IPC: G01J3/18 ,  G01J3/20 ,  G01J3/36 ,  G01J3/427 ,  G01N21/35 ,  G01N33/04

CPC classification number: G01N21/35 ,  G01J3/20 ,  G01J3/427 ,  G01N33/04 ,  G01J3/18 ,  G01J3/36 ,  G01N21/3577

Abstract: An IR-spectrometric analyzing procedure, the measuring absorbance and reference absorbance being detected simultaneously from an IR light beam conducted to pass through the sample and diffracted to a spectrum. An IR spectrometer comprising a light source (1), a sample cuvette (5), a diffraction member (6), detectors (7) and a calculating means (9) for determining the content values of the sample corresponding to the measuring absorbance, the detectors (7) having been arranged to detect the measuring absorbance and the reference absorbance simultaneously from the beam that has passed through the sample and been diffracted to a spectrum.

公开(公告)号：US4999489A

公开(公告)日：1991-03-12

申请号：US325249

申请日：1989-03-17

Applicant: Raymond W. Huggins

Inventor： Raymond W. Huggins

IPC: G01D5/347 ,  G01J3/20 ,  G01J3/28 ,  G02B6/34

CPC classification number: G02B6/29328 ,  G01D5/34776 ,  G01J3/0259 ,  G01J3/20 ,  G01J3/2803 ,  G02B6/29326 ,  G02B6/29313

Abstract: An optical WDM sensor and sensing system for determining a value of a measurand, such as an encoder position. An optical source produces a composite input signal that includes a plurality of different wavelength component signals. The sensor includes an encoder and a concave diffraction grating. The encoder has a plurality of tracks, each track being responsive to the value of the measurand for modulating the intensity of light incident thereon to produce a modulated signal. The grating demultiplexes the composite input signal to produce separate component signals that are directed to an incident upon the respective tracks. Each track produces a modulated signal, and the modulated signals are multiplexed, preferably by the grating, to produce a return signal that may be demultplexed and detected to determine the measurand value. Preferably, the sensor comprises a planar optical waveguide having the grating formed on one side surface. The encoder may be positioned adjacent to the waveguide, or coupled to the waveguide via optical fibers.

Abstract translation: 光学WDM传感器和感测系统，用于确定诸如编码器位置的被测量的值。 光源产生包括多个不同波长分量信号的复合输入信号。 传感器包括编码器和凹面衍射光栅。 编码器具有多个轨道，每个轨道响应于被测量的值，用于调制入射在其上的光的强度以产生调制信号。 光栅对复合输入信号进行多路分解以产生指向相应轨道上入射的单独分量信号。 每个轨道产生调制信号，并且调制信号优选地通过光栅进行多路复用，以产生可以进行解复用和检测的返回信号，以确定被测量值。 优选地，传感器包括具有形成在一个侧表面上的光栅的平面光波导。 编码器可以邻近波导定位，或通过光纤耦合到波导。

公开(公告)号：US4993834A

公开(公告)日：1991-02-19

申请号：US411820

申请日：1989-09-25

Applicant: Christoph Carlhoff ,  Claus-Jurgen Lorenzen ,  Klaus-Peter Nick

Inventor： Christoph Carlhoff ,  Claus-Jurgen Lorenzen ,  Klaus-Peter Nick

IPC: G01J1/44 ,  G01J3/04 ,  G01J3/12 ,  G01J3/20 ,  G01J3/28 ,  G01J3/36

CPC classification number: G01J3/20 ,  G01J3/2803 ,  G01J2001/446 ,  G01J2001/448 ,  G01J2003/045 ,  G01J2003/1295

Abstract: A polychromator in a Paschen-Runge mounting in which intensity measurements are made by means of a row of photodiodes. The spectral intensity distribution of at least two spectral regions on the Rowland circle is transmitted to the row of photodiodes by image conductors and is measured there.

Abstract translation: 在Paschen-Runge安装中的多色分光仪，其中通过一行光电二极管进行强度测量。 Rowland圆上至少两个光谱区域的光谱强度分布通过图像导体传输到光电二极管行，并在那里进行测量。

公开(公告)号：US4605306A

公开(公告)日：1986-08-12

申请号：US501902

申请日：1983-06-07

Applicant: Karoly Kaffka ,  Bela Nadai ,  Andras Czabaffy ,  Lorand Horvath

Inventor： Karoly Kaffka ,  Bela Nadai ,  Andras Czabaffy ,  Lorand Horvath

IPC: G01J3/06 ,  G01J3/18 ,  G01J3/20

CPC classification number: G01J3/18 ,  G01J3/06 ,  G01J3/20

Abstract: The invention relates to a grating monochromator for providing monochromatic radiation the wavelength of which is linearly proportional to a translation or rotation, said monochromator comprising an optical device including a reflection grating (1), an entrance slit (4) transmitting a beam onto the optical device, an exit slit (5) transmitting the beam reflected by the optical device, and a mechanism for moving the optical device and at least one of the slits (4,5) with respect to each other. Within said monochromator the moving mechanism is constructed so that in the course of the moving both the entrance slit (4) and the exit slit (5) are always positioned along a Rowland-circle (R) related to the optical device including the grating (1), and there is a transducer (42) producing an output signal corresponding to the current wavelength value, said transducer (42) being connected to a member (33) translating or rotating proportionally to a distance between a point (A) of the Rowland-circle (R) lying diametrically opposite to the optical device and said at least one slits (4,5). The moving mechanism expediently comprises means (41,33) for altering the distance between said point (A) of the Rowland-circle (R) lying diametrically opposite to the optical device and said at least one slit (4,5), and said member (33) translating or rotating proportionally to said distance is a part of said means.

Abstract translation: 本发明涉及一种用于提供其波长与平移或旋转成线性比例的单色辐射的光栅单色仪，所述单色仪包括光学装置，该光学装置包括反射光栅（1），将光束传输到光学 传输由光学装置反射的光束的出射狭缝（5）和用于相对于彼此移动光学装置和至少一个狭缝（4,5）的机构。 在所述单色仪内，移动机构被构造成使得在移动过程中，入口狭缝（4）和出口狭缝（5）总是沿着与包括光栅的光学装置（R）有关的Rowland-Circle 1），并且存在产生对应于当前波长值的输出信号的换能器（42），所述换能器（42）连接到一个构件（33），该构件（33）成比例地平移或旋转到 位于与所述光学装置和所述至少一个狭缝（4,5）直径相对的罗兰圆圈（R）。 移动机构有利地包括用于改变与光学装置与所述至少一个狭缝（4,5）直径相对的罗兰圆（R）的所述点（A）之间的距离的装置（41,33）和所述 与所述距离成比例地平移或旋转的构件（33）是所述装置的一部分。

公开(公告)号：US4320972A

公开(公告)日：1982-03-23

申请号：US135584

申请日：1980-03-31

Applicant: Albertus Strasheim ,  Eberhard M. Thain

Inventor： Albertus Strasheim ,  Eberhard M. Thain

IPC: G01J3/36 ,  G01J3/04 ,  G01J3/20 ,  G01J3/38

CPC classification number: G01J3/20 ,  G01J3/02 ,  G01J3/0202 ,  G01J3/36

Abstract: A spectrometer of the Rowland circle type having an annular steel table on which are supported a plurality of wheeled carriages. Each carriage has a remotely operable magnetic clamping arrangement to clamp it to the table. Each carriage also has a light entrance slit located in the focal plane, a photo-multiplier tube, and an optical fibre for channelling light from the entrance slit to the photo-multiplier tube. A positioning arm, pivotal about a central axis, is provided. The arm has at its free end a gripping arrangement which is remotely operable to grip any selected carriage. The arm is also remotely positionable to any position on the circle so that any particular carriage can be engaged; displaced to any desired new position; disengaged; and left clamped in the new position. An arcuate rule with an optical read head is also provided whereby the position of the arm is determined. The arm and the carriages are in an evacuated and thermally and structurally insulated housing.

Abstract translation: 罗兰圆型光谱仪具有环形钢台，多个轮式支架支撑在该环形钢台上。 每个托架具有可远程操作的磁夹紧装置，以将其夹紧在工作台上。 每个托架还具有位于焦平面中的光入射狭缝，光电倍增管和用于将光从入射狭缝引导到光电倍增管的光纤。 提供了围绕中心轴枢转的定位臂。 臂在其自由端处具有可以远程操作以夹持任何所选托架的夹持装置。 手臂还可远程定位在圆圈上的任何位置，以便任何特定的托架可以接合; 转移到任何所需的新职位; 脱离 并左转夹在新位置。 还提供了具有光学读取头的弓形规则，由此确定臂的位置。 臂和托架处于抽真空和热和结构绝缘的外壳中。

公开(公告)号：US3312824A

公开(公告)日：1967-04-04

申请号：US31735463

申请日：1963-10-18

Applicant: NAT RES DEV

Inventor： HUGH COOK ALAN

IPC: G01J3/04 ,  G01J3/18 ,  G01J3/20

CPC classification number: G01J3/18 ,  G01J3/04 ,  G01J3/20

公开(公告)号：US12000734B2

公开(公告)日：2024-06-04

申请号：US17774851

申请日：2020-11-06

Applicant: HITACHI HIGH-TECH ANALYTICAL SCIENCE GMBH

Inventor： Heinz Jürgen Graf ,  Rainer Simons

IPC: G01J3/02 ,  G01J3/20

CPC classification number: G01J3/0208 ,  G01J3/021 ,  G01J3/20

Abstract: Spectrometer device (100) with entrance aperture (2), diffraction grating (3), two detectors (5a, 5b) to spectrally measuring the incoming light (L), the detectors being located on the same side of the dispersion plane. Two vertically focusing mirrors (4, 4a, 4b) focus the light onto detectors, the minors being arranged as front row mirrors (4b) and back row minors (4a) along two polygon graphs (6a, 6b) offset to each other and to the focal curve. The angles of deflection (cp, 91) for the front row mirrors are