公开(公告)号：US20020180970A1

公开(公告)日：2002-12-05

申请号：US09958458

申请日：2001-10-05

Inventor： Michael R. Hammer ,  Philip V. Wilson ,  Mark R. Williams ,  Dower C. Bricker ,  Martin K. Masters ,  Stewart R. Campbell ,  Peter G. Layton

IPC: G01J003/28

CPC classification number: G01J3/36 ,  G01J3/02 ,  G01J3/0213 ,  G01J3/0227 ,  G01J3/0229 ,  G01J3/0232 ,  G01J3/1809 ,  G01J3/2803 ,  G01J5/62 ,  G01J2003/1828 ,  G01N21/27 ,  G01N21/31

Abstract: A method and apparatus for the spectrochemical analysis of a sample in which a solid state array detector (82) is used to detect radiation (62) of spectrochemical interest. The invention involves the use of a shutter (72) adjacent the entrance aperture (70) of a polychromator (74-80) to expose the detector (82) to the radiation (62) for varying lengths of time whereby for short duration exposure times charge accumulation in elements (i.e. pixels) of the detector (82) due to high intensity components of the radiation is limited and for longer exposure times charge accumulation in elements (pixels) of the detector (82) due to feeble intesity components of radiation (62) is increased. This ensures that each reading of the detector (82) includes at least one exposure in which the amount of charge accumulated at each wavelength of interest is neither too little or too great. The problems of feeble radiation components not being accurately measurable and of high intensity radiation components exceeding the charge carrying capacity of elements (pixels) of the detector (82) are thereby able to be avoided. An attenuator (90) may be placed between the radiation source (60) and the detector (82) to permit longer exposure times to be used for very high intensity radiation.

Abstract translation: 用于对样品进行光谱化学分析的方法和装置，其中固态阵列检测器（82）用于检测分光光度的辐射（62）。 本发明涉及使用与多色调剂（74-80）的入口孔（70）相邻的快门（72）将检测器（82）暴露于辐射（62）以改变长度的时间，从而短时间曝光时间 由于辐射的高强度分量，检测器（82）的元件（即，像素）中的电荷累积受到限制，并且由于辐射的微弱的肥胖分量，对于更长的曝光时间来检测器（82）的元件（像素）中的电荷累积 62）增加。 这确保了检测器（82）的每次读取包括至少一次曝光，其中在每个感兴趣波长处累积的电荷量既不太小也不太大。 因此能够避免无法精确测量的微弱辐射成分和超过检测器（82）的元件（像素）的电荷承载能力的高强度辐射成分的问题。 衰减器（90）可以放置在辐射源（60）和检测器（82）之间，以允许更长的曝光时间用于非常高强度的辐射。

公开(公告)号：US20010031107A1

公开(公告)日：2001-10-18

申请号：US09839809

申请日：2001-04-19

Inventor： Scott H. Bradshaw

IPC: G02F001/295 ,  G02F001/13 ,  G02B026/02 ,  G02F001/29 ,  G02B027/44 ,  G02B026/08 ,  G02B005/18

CPC classification number: G01J3/18 ,  G01J3/02 ,  G01J3/021 ,  G01J3/0213 ,  G01J3/0229 ,  G01J3/0243 ,  G02B5/005 ,  G02B6/2931 ,  G02B26/02 ,  G02B27/1086 ,  G02B27/145 ,  G02B27/147 ,  G02B27/4244

Abstract: A multiwavelength selector for use with a high speed performance monitor, that uses a spatial wavelength separator, a configurable spatial filter, a focusing assembly, and a photodetector to select a wavelength or wavelengths from a plurality of incoming wavelengths, for further processing by said high speed performance monitor. The invention is intended for use in a fiber optic network application.

Abstract translation: 一种用于高速性能监视器的多波长选择器，其使用空间波长分离器，可配置空间滤波器，聚焦组件和光电检测器来选择来自多个入射波长的波长或波长，以进一步处理所述高 速度性能监视器。 本发明旨在用于光纤网络应用中。

公开(公告)号：US20010019408A1

公开(公告)日：2001-09-06

申请号：US09846583

申请日：2001-05-01

Inventor： Thomas W. Hagler

IPC: G01J003/28 ,  G01J003/04

CPC classification number: G01J3/02 ,  G01J3/021 ,  G01J3/0213 ,  G01J3/0229 ,  G01J3/0289 ,  G01J3/12 ,  G01J3/18 ,  G01J3/32 ,  G01J3/433 ,  G01J2001/4242 ,  G01J2003/2866

Abstract: A disc serving as a spatial radiation modulator has dispersed radiation filters thereon. Each filter has a transmittance or reflectance modulation function of the form sin2(mnullnullpnull/4), where m is a positive integer and p has one of the four values 0, 1, 2, 3. A radiation beam including selected wavelength components is diffracted into an elongated image dispersed according to wavelength. Different wavelength components are focused onto different filters on the modulator and are encoded by correspond filters. Since the modulation functions of the filters are orthogonal to one another, it is possible to extract the amplitude of each wavelength component after it has been encoded or modulated by corresponding filter from the total detected signal during one measurement.

公开(公告)号：US3449050A

公开(公告)日：1969-06-10

申请号：US3449050D

申请日：1965-04-29

Applicant: BECKMAN INSTRUMENTS INC

Inventor： KEAHL GERALD T

IPC: G01J3/12 ,  G01N21/31 ,  G01J3/42

CPC classification number: G01N21/314 ,  G01J3/0202 ,  G01J3/0213 ,  G01J3/12

公开(公告)号：US3177759A

公开(公告)日：1965-04-13

申请号：US14292461

申请日：1961-10-04

Applicant: BARNES ENG CO

Inventor： WILLKS JR PAUL A

IPC: G01N21/55 ,  G02B3/00 ,  G02B5/04

CPC classification number: G02B3/005 ,  G01J3/0213 ,  G01N21/552 ,  G02B5/045

公开(公告)号：US11885677B2

公开(公告)日：2024-01-30

申请号：US17227440

申请日：2021-04-12

Applicant: Massachusetts Institute of Technology

Inventor： Derek Kita ,  Carlos Andres Rios Ocampo ,  Juejun Hu

IPC: G01J3/02 ,  G01J3/45 ,  G01J3/453 ,  G02F1/21

CPC classification number: G01J3/0256 ,  G01J3/0205 ,  G01J3/0213 ,  G01J3/45 ,  G01J3/4531 ,  G01J3/4532 ,  G02F1/212

Abstract: We disclose an on-chip photonic spectroscopy system capable of dramatically improving the signal-to-noise ratio (SNR), dynamic range, and reconstruction quality of Fourier transform spectrometers. Secondly, we disclose a system of components that makes up a complete on-chip RF spectrum analyzer with low-cost and high-performance.

公开(公告)号：US20230296511A1

公开(公告)日：2023-09-21

申请号：US18042220

申请日：2021-08-19

Applicant: Maytronics Ltd.

Inventor： Hanoch KISLEV ,  Shahar SOBOL ,  Yehonatan Evgeniy TILCHIN ,  Alexander RACHMAN

IPC: G01N21/51 ,  G01N21/31 ,  G01N21/64 ,  G01J3/42 ,  G01J3/02 ,  G01J3/28

CPC classification number: G01N21/51 ,  G01N21/31 ,  G01N21/64 ,  G01J3/42 ,  G01J3/0208 ,  G01J3/0213 ,  G01J3/0227 ,  G01J3/2803

Abstract: A liquid measuring system (LMS) comprising: a light source; a multi-region optical filter (MROF); a sample cell configured to contain a liquid sample; an optical detection subsystem (ODS) having an optical detector for measuring optical properties of light emanating from the liquid sample. The MROF may include a spectral filter region such as a bandpass or a long-pass filter type region, and natural density (ND) type filter region, for enabling simultaneous optical measuring at least of turbidity level and algae concentration in a water sample contained by the sample cell, by having light passed through the water sample and the MROF before reaching the optical detector of the ODS. Embodiments of the MROFs may be also used, for example for selective spectral attenuation of light illuminating the liquid sample to achieve reduction in distortions due to stray light.

公开(公告)号：US20180042483A1

公开(公告)日：2018-02-15

申请号：US15558162

申请日：2016-03-07

Applicant: Massachusetts Institute of Technology

Inventor： Neelkanth M. Bardhan ,  Xiangnan Dang ,  Jifa Qi ,  Angela M. Belcher

IPC: A61B5/00 ,  G01N21/64 ,  G01J3/32 ,  G01J3/44 ,  G01J3/28 ,  G01N33/22

CPC classification number: A61B5/0071 ,  A61B5/0075 ,  A61B5/0091 ,  A61B5/7232 ,  A61B2576/00 ,  A61B2576/02 ,  G01J3/0213 ,  G01J3/18 ,  G01J3/2823 ,  G01J3/32 ,  G01J3/36 ,  G01J3/4406 ,  G01N21/64 ,  G01N33/22 ,  G01N2021/6421 ,  G01N2201/12 ,  G02B21/361

Abstract: A method, and corresponding system, can include identifying a plurality of wavelength spectral band components in hyperspectral image data, the spectral band components corresponding to mutually distinct sources of image contrast. An intensity image corresponding to each respective spectral band component can be calculated, followed by combining the respective intensity images to form an inter-band image based on the respective, mutually distinct sources of image contrast for each spectral band component. Intensity images can be hyperspectral or hyperdiffuse images. Hyperdiffuse imaging can be performed for each spectral band component identified using hyperspectral measurements. Spectral position and spectral width images corresponding to each spectral band component can be calculated and used to determine depth of features inside a surface of the target. Diffuse width images can be calculated from hyperdiffuse image data and used to determine depth.

公开(公告)号：US09863877B2

公开(公告)日：2018-01-09

申请号：US14863341

申请日：2015-09-23

Applicant: Agilent Technologies, Inc.

Inventor： Charles Hoke ,  Christopher Ryan Moon ,  Andrew Ghetler ,  Yuri Beregovski ,  Richard P. Tella ,  Yang Han

IPC: G01N21/552 ,  G01N21/35 ,  G02B13/14 ,  G02B17/00 ,  G02B17/08 ,  G01N21/3563 ,  G01N21/39 ,  G01J3/02

CPC classification number: G01N21/552 ,  G01J3/0213 ,  G01J3/0229 ,  G01N21/35 ,  G01N21/3563 ,  G01N2021/399 ,  G01N2201/0633 ,  G01N2201/10 ,  G01N2201/101 ,  G02B13/14 ,  G02B17/006 ,  G02B17/0808 ,  G02B21/002 ,  G02B21/02 ,  G02B21/04 ,  G02B21/10

Abstract: A scanner and an attenuated total reflection (ATR) objective for use in such scanners are disclosed. The ATR objective includes first and second optical elements and an input port. The input port receives an input collimated light beam that is focused to a point on a planar face of the first optical element by the second optical element such that substantially all of that portion is reflected by the planar face and no portion of the input beam strikes the planar face at an angle less than the critical angle. The second optical element also generates an output collimated light beam from light reflected from the planar thce that is characterized by a central ray that is coincident with the central ray of the input collimated light beam. A light beam converter receives the first collimated light beam and generates the input collimated light beam therefrom.

公开(公告)号：US09857221B2

公开(公告)日：2018-01-02

申请号：US14813472

申请日：2015-07-30

Applicant: Seiko Epson Corporation

Inventor： Tomonori Matsushita

IPC: G01J3/00 ,  G01J3/02 ,  G01J3/26 ,  G01J3/28

CPC classification number: G01J3/0213 ,  G01J3/0256 ,  G01J3/26 ,  G01J2003/2813 ,  G01J2003/2826

Abstract: A spectral camera includes a wavelength variable interference filter, an imaging unit having a plurality of light receiving elements arranged in a two-dimensional array configuration, and a wavelength acquisition unit which acquires center wavelengths of light beams received by the light receiving elements in accordance with signal values output from the light receiving elements when reference light is received by the imaging unit. Light amounts of the reference light corresponding to different wavelength components in a certain wavelength range are uniform in a plane, and different signal values are acquired when light beams of the different wavelength components are received by the light receiving elements.