公开(公告)号：EP0207498A3

公开(公告)日：1988-04-27

申请号：EP86108951

申请日：1986-07-01

Applicant: SHIMADZU CORPORATION

Inventor： Fukuma, Toshiaki

IPC: G01J03/28 ,  G01J03/06 ,  G01J03/42

CPC classification number: G01J3/28 ,  G01J2003/062 ,  G01J2003/066

Abstract: A spectrophotometer wherein the diffraction grating is driven directly by a pulse motor and the wavelength of the monochromatic light used for measurement is calculated by a data processor from the amount of rotation of the pulse motor. The data processor is provided with an Input unit for setting a parameter corresponding to the difference between the nominal and actual grating constants of the diffraction grating and so arranged as to calculate the wavelength in accordance with the nominal grating constant having been modified with the parameter set through the Input unit.

公开(公告)号：EP0105178A3

公开(公告)日：1984-10-24

申请号：EP83108371

申请日：1983-08-25

Applicant: Li-Cor, Inc.

Inventor： Middendorf, Lyle Richard ,  Wurm, John Henry ,  Biggs, William Walter

IPC: G01J03/00 ,  G01J03/06 ,  G01J05/30 ,  G01N21/27

CPC classification number: G01J3/28 ,  G01J3/0232 ,  G01J3/0256 ,  G01J3/0262 ,  G01J3/027 ,  G01J3/0283 ,  G01J3/0291 ,  G01J3/06 ,  G01J2003/1828 ,  G01N2201/125 ,  G01N2201/127

Abstract: To provide sufficient sensitivity, spectral resolution and speed of measurement for field environmental measurements in a portable spectroradiometer, a silicon photodiode receives light: (1) having a bandwidth in the range of between 2 and 15 nm (nanometers) from a pivotable concave holographic diffraction grating within the wavelength range of between 250 and 1150 nm at a scanning rate in the range of 20 to 100 nm per second; (2) having stray light of high intensity and undesired frequencies and the shorter wavelength harmonics of the selected frequency range blocked by filters; and (3) having flux of a least 10 microwatts per square meter of diffuser plate for each nanometer of bandwidth. Automatic electrical zeroing is obtained by blocking all light once at the beginning of each scan, obtaining an electrical drift-related signal and using the drift signal to ad- just the measured signal during the scan. Several different sensing interfaces can be used, including a quartz, light fiber probe having at least a 50% packing density and a cone angle of at least 24 degrees. The data and the programming storage is at least 30K bytes but the instrument uses no more than two watts of power when the instrument is not scanning.

公开(公告)号：WO1983000065A1

公开(公告)日：1983-01-06

申请号：PCT/US1981000867

申请日：1981-06-24

Applicant: LEAR SIEGLER, INC. ,  PRICE, Gerald, W. ,  POLHEMUS, Carl, E.

Inventor： LEAR SIEGLER, INC.

IPC: G01J03/06

CPC classification number: G01J3/433

Abstract: An optical spectrometer (10) for measuring low concentrations of gas constituent, such as SO2, provides automatic tracking of an absorption band of the constituent. A stepper motor (26) rotates an optical frequency modulator (24) in the spectrometer through a preset range to vary the frequency of the light passing through a gas sample (12) about an adjustable center frequency. The ouput of the spectrometer, which varies in amplitude with the change in frequency of the light due to the absorption characteristic of the gas, is filtered by a digital filter (64) and stored as a set of digital values in memory (44) of a digital processor (40). The maximum peak value of a set of peak values corresponding to different selected center frequencies is used to control the stepper motor to control the angle and hence the center frequency of the optical modulator to track the absorption peak of the constituent gas.

Abstract translation: 用于测量诸如SO 2的低浓度气体组分的光谱仪（10）提供了对组分的吸收带的自动跟踪。 步进电机（26）使光谱仪中的光频调制器（24）旋转预设范围，以改变通过气体样品（12）的光的频率大约可调节的中心频率。 由于气体的吸收特性而随着光的频率变化而变化的光谱仪的输出被数字滤波器（64）滤波，并作为一组数字值存储在存储器（44）中 数字处理器（40）。 使用对应于不同选择的中心频率的一组峰值的最大峰值来控制步进电机来控制角度，并因此控制光调制器的中心频率以跟踪构成气体的吸收峰。

公开(公告)号：WO1996034256A1

公开(公告)日：1996-10-31

申请号：PCT/GB1996000970

申请日：1996-04-24

Applicant: RENISHAW PLC ,  BATCHELDER, David, Neville

Inventor： RENISHAW PLC

IPC: G01J03/06

CPC classification number: G01J3/1256 ,  G01J3/06 ,  G01J3/44 ,  G02B5/1828

Abstract: A line in a Raman spectrum scattered from a sample (18) is selected by a diffraction grating (20) and passed to a detector (26). The grating (20) may be based on an electrostrictive device and has a variable pitch. It is tuned about the selected Raman line under the control of an oscillator (28). The output from the detector (26) is analysed synchronously with the oscillation by a phase sensitive detector (34). This rejects background light and enables, for example, confirmation of the existence of the Raman line in the spectrum, and measurement of its height above the background. The variable pitch grating (20) may be replaced by a fixed pitch grating or a tunable filter, mounted on an oscillatory drive which may comprise electrostrictive or piezolelectric elements.

Abstract translation: 通过衍射光栅（20）选择从样品（18）散射的拉曼光谱线，并将其传递到检测器（26）。 光栅（20）可以基于电致伸缩器件并且具有可变间距。 在振荡器（28）的控制下，对所选择的拉曼线进行调谐。 来自检测器（26）的输出与相位敏感检测器（34）的振荡同步分析。 这拒绝背景光，并且能够例如确认光谱中的拉曼线的存在以及其高于背景的高度的测量。 可变节距光栅（20）可以由安装在可包括电致伸缩或电压元件的振荡驱动器上的固定俯仰光栅或可调谐滤光器代替。

公开(公告)号：WO1993019350A1

公开(公告)日：1993-09-30

申请号：PCT/FI1993000104

申请日：1993-03-19

Applicant: RAUTARUUKKI OY ,  KERÄNEN, Heimo ,  PIETARINEN, Pasi ,  ALAJÄRVI, Tapani ,  VÄLI, Veli

Inventor： RAUTARUUKKI OY

IPC: G01J03/06

CPC classification number: G01J3/02 ,  G01J3/021 ,  G01J3/0235 ,  G01J3/0237 ,  G01J3/51 ,  G01J3/513 ,  G01J2003/064 ,  G01N21/314 ,  G01N21/474

Abstract: The invention relates to a method of and a device for measuring optical radiation. In the method, the intensity (2) of a radiation coming from an object (1) to be measured and to be lighted by collimated radiation is measured at several wavelength by focusing the radiation by an optical means (4) and a mirror means (6) on a detector group (3) comprising several detector elements (3a to 3d). The radiation coming from the object (1) to be measured is directed by the optical means (4) and the planar mirror means (6) in such a way that, by rotating the mirror means (6) tilted with respect to its axis (5) round this axis (5) and by keeping the radiation on the surface of the same planar mirror means (6), the focus (F) of radiation is moved in a detector plane (D) along a regular uninterrupted path (R) alternatingly over each detector element (3a to 3d) positioned substantially in the same plane and excited at a different wavelength.

Abstract translation: 本发明涉及一种用于测量光辐射的方法和装置。 在该方法中，通过用光学装置（4）和反射镜装置（4）聚焦辐射来测量来自待测物体（1）的被准直辐射照明的辐射的强度（2） 6）包括几个检测器元件（3a至3d）的检测器组（3）上。 来自被测量物体（1）的辐射由光学装置（4）和平面反射镜装置（6）引导，使得通过使反射镜装置（6）相对于其轴线倾斜 5）绕此轴线（5）并且通过将辐射保持在相同的平面镜装置（6）的表面上，辐射的焦点（F）沿着规则的不间断路径（R）在检测器平面（D）中移动， 交替地位于基本上位于同一平面内并以不同波长激发的每个检测器元件（3a至3d）上。

公开(公告)号：EP0124448A3

公开(公告)日：1986-01-15

申请号：EP84420019

申请日：1984-02-03

Applicant: THEYSSEL S.A.

Inventor： Savoyet, Jean-Louis

IPC: G01J03/06

CPC classification number: G01J3/06 ,  G01J2003/1204 ,  G01J2003/1828

公开(公告)号：EP0120526A3

公开(公告)日：1985-12-27

申请号：EP84200290

申请日：1984-03-01

Applicant: PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES LIMITED ,  N.V. Philips' Gloeilampenfabrieken

Inventor： Wilson, James Brian

IPC: G01J03/06 ,  G01J03/18

CPC classification number: G01J3/06

Abstract: A sine bar mechanism comprises an arm (9) of radius R which is pivoted about an axis (13) which is also the axis of a diffraction grating. An elongate member (6) is pivotally mounted at one end (7) and is pivotally connected to the arm (9) at its other end (8). The co-ordinates (x,y) of the point (7) and the length of the elongate member (6) are chosen to optimise the characteristics of the mechanism. Embodiments in which the elongate member (6) comprises a lead screw and the pivotal connection (8) comprises a nut which is pivotally mounted on the arm (9) and which engages with the lead screw are described and their use in various types of monochromator portrayed.