公开(公告)号：US6016197A

公开(公告)日：2000-01-18

申请号：US934236

申请日：1997-09-22

Applicant: Sergej G. Krivoshlykov

Inventor： Sergej G. Krivoshlykov

IPC: G01J3/00 ,  G01J3/02 ,  G01J3/453 ,  G01N21/77 ,  G01B9/02

CPC classification number: G01J3/453 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0256 ,  G01N21/7703 ,  G01N2021/7779

Abstract: An optical spectrum analyzer based on optical processing of the far field interference pattern from two beams irradiated by light transmitting waveguides is described. The spectrum analyzer can operate in UV, VIS, NIR and MIR ranges of spectrum and it can be based on either optical fibers (multimode or single-mode) or integrated optical waveguides. It has many important applications, for example, as a simple, compact and inexpensive spectrum analyzer used with fiber optic chemical and biological sensors.

Abstract translation: 描述了基于由光发射波导照射的两个光束的远场干涉图案的光学处理的光谱分析仪。 光谱分析仪可以在UV，VIS，NIR和MIR光谱范围内工作，并且可以基于光纤（多模或单模）或集成光波导。 它具有许多重要的应用，例如，作为光纤化学和生物传感器使用的简单，紧凑和便宜的频谱分析仪。

公开(公告)号：US5973781A

公开(公告)日：1999-10-26

申请号：US21073

申请日：1998-02-09

Applicant: Beate Moeller ,  Guenter Rudolph

Inventor： Beate Moeller ,  Guenter Rudolph

IPC: G02B5/18 ,  A61B3/10 ,  G01J3/453 ,  G01J9/02 ,  G01B9/02

CPC classification number: A61B3/102 ,  A61B3/1005 ,  G01J3/4535 ,  G01J9/02

Abstract: An interferometric arrangement for scanning an object with an illumination beam path comprises a diffractive optical element (DOE) for generating differently directed beam components of the illuminating light. The DOE is arranged in the illumination beam path in front of at least one scanning element deflecting the illuminating light in at least one direction.

Abstract translation: 用于用照明光束路径扫描物体的干涉装置包括用于产生照明光的不同定向光束分量的衍射光学元件（DOE）。 DOE布置在至少一个扫描元件前面的照明光束路径中，该至少一个扫描元件在至少一个方向上偏转照明光。

公开(公告)号：US5963322A

公开(公告)日：1999-10-05

申请号：US27901

申请日：1998-02-23

Applicant: Norbert Rapp ,  Arno Simon

Inventor： Norbert Rapp ,  Arno Simon

IPC: G01J3/453 ,  G01B9/02

CPC classification number: G01J3/4535 ,  G01J3/453

Abstract: An optical spectrometer (1) with an interferometer having a means for varying the optical path difference comprising a drive (8), and with a detector (6) for recording optical signals from the interferometer and converting them into electrical analog signals, wherein an analog-to-digital converter (ADC) (9) is connected to the detector (6) digitizing the electrical analog signals in a time-equidistant manner, is characterized in that the data acquisition electronics (17) are supplied by a switched power supply (14), the clock of which is derived from the same reference oscillator (16) as the clock of the signal digitization by the ADC (9). In contrast to known spectrometers with spatially equidistant sampling of the detector signal, the design of the spectrometer according to the invention is considerably cheaper and more compact with respect to its voltage supply elements. Galvanic separation of the data acquisition electronics and the electronic control unit of the linear drive is no longer required.

Abstract translation: 一种具有干涉仪的光谱仪（1），具有用于改变光程差的装置，包括驱动器（8），以及用于记录来自干涉仪的光信号并将其转换成电模拟信号的检测器（6），其中模拟 数字转换器（ADC）（9）连接到以时间等距的方式对电气模拟信号进行数字化的检测器（6），其特征在于数据采集电路（17）由开关电源 14），其时钟源自与ADC（9）的信号数字化的时钟相同的参考振荡器（16）。 与已知的具有对检测器信号进行空间等距取样的光谱仪相反，根据本发明的光谱仪的设计相当于其电压供应元件便宜得多且更紧凑。 数据采集​​电子元件和线性驱动电子控制单元的电气分离不再需要。

公开(公告)号：US5895918A

公开(公告)日：1999-04-20

申请号：US60909

申请日：1998-04-15

Applicant: George Louis Powell ,  Russell Louis Hallman, Jr.

Inventor： George Louis Powell ,  Russell Louis Hallman, Jr.

IPC: G01J3/453 ,  G01N21/35

CPC classification number: G01J3/453

Abstract: An apparatus for and method of analyzing an article having an entrance and an exit in communication with the entrance. The apparatus comprises: a spectrometer having an emission source with a focal point; a plurality of mirrors; and a detector connected to the spectroscope. The emission source is positioned so that its focal point is substantially coextensive with the entrance of the article. The mirrors comprise: a first mirror positionable adjacent the exit of the article and a second mirror positioned relative to the other of said plurality of mirrors. The first mirror receives scattered emissions exiting the article and substantially collimates the scattered emissions. The second mirror substantially focuses the collimated emissions into a focused emission. The detector receives the focused emission from the mirrors.

Abstract translation: 用于分析具有与入口通信的入口和出口的物品的装置和方法。 该装置包括：具有具有焦点的发射源的光谱仪; 多个镜子; 和连接到分光镜的检测器。 排放源被定位成使其焦点与制品的入口基本上共同延伸。 反射镜包括：可邻近物品出口定位的第一镜和相对于所述多个镜中的另一个定位的第二镜。 第一个反射镜接收离开物品的散射的排放物，并大大准直了散射的排放物。 第二个镜子基本上将准直发射集中到聚焦发射。 检测器接收来自反射镜的聚焦发射。

公开(公告)号：US5867271A

公开(公告)日：1999-02-02

申请号：US491907

申请日：1995-07-14

Applicant: Isao Tokumoto ,  Shigeki Nishina

Inventor： Isao Tokumoto ,  Shigeki Nishina

IPC: G01J3/453 ,  G01B9/02

CPC classification number: G01J3/4535

Abstract: A light power spectrum is accurately measured, in spite of the polarized light-dependency of the non-polarizing beam splitter 12. Incident light 11 is separated by a polarizing/separating element 31 into orthogonal polarized light components 11a and 11b. The orthogonal polarized light components have their polarizing directions rotated by 45 degrees in opposite directions with respect to their P wave components and S wave components at the reflecting/transmitting face of the non-polarizing beam splitter. The reflected and transmitted from the non-polarizing beam splitter 12 are reflected by a stationary reflector 16 and a moving reflector 17 back to the non-polarizing beam splitter 12 and are recombined to interfere with each other at the reflecting/transmitting face of the non-polarizing beam splitter. The resulting interference lights are received by a common light-receiver.

Abstract translation: PCT No.PCT / JP94 / 01905 Sec。 371 1995年7月14日第 102（e）日期1995年7月14日PCT 1994年11月11日提交PCT尽管非偏振分束器12具有偏振光依赖性，但是准确地测量了光功率谱。入射光11被偏振/ 将元件31分离为正交偏振光分量11a和11b。 正交偏振光分量的偏振方向相对于非偏振光束分离器的反射/透射面处的P波分量和S波分量在相反方向上旋转45度。 来自非偏振光束分离器12的反射和透射被固定反射器16和移动反射器17反射回非偏振光束分离器12，并被重新组合以在非偏振光束分离器12的反射/透射面处彼此干涉 极化分束器。 所产生的干扰光由普通的光接收器接收。

公开(公告)号：US5781293A

公开(公告)日：1998-07-14

申请号：US586671

申请日：1996-04-17

Applicant: John Miles Padgett ,  Alan James Duncan ,  Wilson Sibbett ,  Andrew Robert Harvey

Inventor： John Miles Padgett ,  Alan James Duncan ,  Wilson Sibbett ,  Andrew Robert Harvey

IPC: G01J3/447 ,  G01J3/453 ,  G01B9/02

CPC classification number: G01J3/447 ,  G01J3/4531

Abstract: A Fourier-transform spectrometer contains a birefringent optical component, removing the need for a Michelson interferometer used in conventional instruments. A suitable birefringent element such as a Wollaston prism, is used to introduce a path difference between two light polarisations. Use of an extended light source so that all areas of the birefringent component are illuminated simultaneously ensures that different positions on the birefringent component correspond to different path differences between the two polarisations. A Fourier-transform of the resulting interferogram at the detector results in the spectral distribution of the input light being obtained. The use of an extended light source permits a Fourier-transform spectrometer with no moving parts to be achieved.

Abstract translation: PCT No.PCT / GB94 / 01499 Sec。 371日期：1996年4月17日 102（e）日期1996年4月17日PCT 1994年7月11日PCT公布。 公开号WO95 / 02171 日期1995年1月19日傅立叶变换光谱仪包含双折射光学部件，不需要用于传统仪器中的迈克尔逊干涉仪。 使用诸如Wollaston棱镜的合适的双折射元件来引入两个光极化之间的路径差异。 使用扩展光源使得双折射元件的所有区域同时被照亮，确保双折射元件上的不同位置对应于两个极化之间的不同路径差异。 在检测器处的​​所得干涉图的傅立叶变换导致所获得的输入光的光谱分布。 使用扩展光源允许不具有移动部件的傅里叶变换光谱仪。

公开(公告)号：US5774215A

公开(公告)日：1998-06-30

申请号：US709296

申请日：1996-09-09

Applicant: Miles John Padgett ,  Wilson Sibbett ,  Johannes Courtial ,  Brett Alexander Patterson

Inventor： Miles John Padgett ,  Wilson Sibbett ,  Johannes Courtial ,  Brett Alexander Patterson

IPC: G01J3/453 ,  G01B9/02

CPC classification number: G01J3/4537

Abstract: A Fourier transform spectrometer for use, among others, for sensing gases or liquids includes two polarizers, a birefringent optical component interposed between the two polarizers and a detector. Light from an extended source is substantially polarized by a first of the two polarizers, split into divergent beams by the birefringent optical component, and again caused to converge by the birefringent optical component so that, after passing through a second of the two polarizers, the light forms an interferogram in a plane behind the birefringent optical component where the detector is situated. The Fourier transform spectrometer is thereby provided with a way of forming an interferogram of the light from the extended source without a lens or a second birefringent optical component. This improves the field of view of the spectrometer and is likely to reduce its cost.

Abstract translation: 用于检测气体或液体的傅立叶变换光谱仪包括两个偏振器，两个偏振器之间的双折射光学部件和检测器。 来自扩展源的光被两个偏振器中的第一个基本上极化，通过双折射光学部件分裂成发散光束，并且再次由双折射光学部件会聚，使得在穿过两个偏振器中的第二个偏振器之后， 光在检测器所在的双折射光学部件的后面的平面中形成干涉图。 因此，傅立叶变换光谱仪具有形成来自不具有透镜或第二双折射光学部件的来自扩展源的光的干涉图的方式。 这改善了光谱仪的视野，并且可能降低其成本。

公开(公告)号：US5644125A

公开(公告)日：1997-07-01

申请号：US344184

申请日：1994-11-23

Applicant: Darold Wobschall

Inventor： Darold Wobschall

IPC: G01J3/453 ,  G01B9/02

CPC classification number: G01J3/4537

Abstract: A planar optic sensor for measuring the optical absorbance spectrum of a side variety of substances in situ comprises a planar waveguide Mach-Zehnder interferometer having a reference path and a sensing path. The sensing path of the waveguide is exposed to the sample under test, the sample interacting with the guided light via emanations from the light as it propagates through the sensing path. The reference path of the waveguide is provided with a heater that linearly varies over time the refractive index of the reference path material, in this manner varying the optical path length of the reference path. Fourier spectroscopic techniques are applied to compare the spectrum of a white light source without a sample present in the sensing path to the spectrum of the white light source in the presence of a sample in the sensing path, as the optical path length of the reference path is swept over time. From these data the absorption spectrum of the sample is determined.

Abstract translation: 用于测量原位物质的各种物质的光吸收光谱的平面光学传感器包括具有参考路径和感测路径的平面波导马赫 - 曾德干涉仪。 波导的感测路径暴露于被测试样品，样品通过从光传播通过感测路径时通过发光与引导光相互作用。 波导的参考路径设置有以这种方式改变参考路径的光路长度的随时间线性变化的参考路径材料的折射率的加热器。 应用傅立叶光谱技术来比较白光源的光谱，而不存在感测路径中存在的样本在感光路径中存在样本时白光源的光谱，作为参考路径的光路长度 随着时间的推移被扫过 根据这些数据确定样品的吸收光谱。

公开(公告)号：US5612784A

公开(公告)日：1997-03-18

申请号：US584217

申请日：1996-01-04

Applicant: Raul Curbelo

Inventor： Raul Curbelo

IPC: G01B9/02 ,  G01J3/45 ,  G01J3/453

CPC classification number: G01J3/453

Abstract: By considering a transient signal as merely another signal in a linear, shift-invariant system representing a step-scanning Fourier transform spectrometer, the present invention characterizes the transient signal and then compensates for its effect on the measurement by employing various signal processing techniques. Thus, according to one aspect of the present invention, it provides a method for obtaining the spectrum of the desired signal by subtracting the Fourier transform of the transient signal from the Fourier transform of the composite signal output from the detector (i.e., the signal containing both the desired signal and the transient signal). According to another aspect of the present invention, it provides a method for deriving an estimate of the Fourier transform of the transient signal from the Fourier transform of the composite signal.

Abstract translation: 通过考虑瞬态信号作为代表阶跃扫描傅里叶变换光谱仪的线性，移位不变系统中的另一信号，本发明描述了瞬态信号，然后通过采用各种信号处理技术来补偿其对测量的影响。 因此，根据本发明的一个方面，它提供了一种通过从检测器输出的复合信号的傅里叶变换中减去瞬态信号的傅里叶变换来获得期望信号的频谱的方法（即，包含 所需信号和瞬态信号）。 根据本发明的另一方面，提供了一种用于从复合信号的傅里叶变换导出瞬态信号的傅立叶变换的估计的方法。

公开(公告)号：US5558934A

公开(公告)日：1996-09-24

申请号：US352026

申请日：1994-11-30

Applicant: Nelson L. Rowell ,  Edward A. Wang

Inventor： Nelson L. Rowell ,  Edward A. Wang

IPC: G01J3/453 ,  G02B27/10 ,  B32B5/16

CPC classification number: G01J3/453 ,  Y10T428/261 ,  Y10T428/265 ,  Y10T428/31681 ,  Y10T428/31786

Abstract: The invention disclosed relates to a composite material for use in a beamsplitter for the far infrared which provides a high operating efficiency over the spectral range of 50 to 550 cm.sup.-1. The composite comprises a thin, substantially uniformly thick synthetic resin film having low far infrared absorption, preferably polyethyleneterephthalate, and a thin substantially uniformly thick coating of a transparent material having an index of refraction of about twice that of the substrate, preferably of germanium. An improved interferometer including a beamsplitter formed of the composite is also disclosed.

Abstract translation: 所公开的本发明涉及一种用于远红外分束器的复合材料，其在50至550cm -1的光谱范围内提供高的操作效率。 复合材料包括具有低远红外线吸收性，优选聚对苯二甲酸乙二醇酯的薄的，基本上均匀的厚的合成树脂膜，以及薄的基本均匀的厚的透明材料涂层，其折射率为基底，优选锗的折射率的两倍。 还公开了一种包括由复合材料形成的分束器的改进的干涉仪。