公开(公告)号：US09846117B2

公开(公告)日：2017-12-19

申请号：US12814315

申请日：2010-06-11

Applicant: Xin Zhou ,  Xiang Liu ,  Alfred Feitisch

Inventor： Xin Zhou ,  Xiang Liu ,  Alfred Feitisch

IPC: G01J3/433 ,  G01N21/39 ,  G01N21/03 ,  G01N21/05 ,  G01N21/3504 ,  G01N21/27

CPC classification number: G01N21/39 ,  G01J3/433 ,  G01J3/4338 ,  G01J2003/4332 ,  G01J2003/4334 ,  G01N21/031 ,  G01N21/05 ,  G01N21/274 ,  G01N21/3504 ,  G01N2021/354 ,  G01N2021/399

Abstract: Detector data representative of an intensity of light that impinges on a detector after being emitted from a light source and passing through a gas over a path length can be analyzed using a first analysis method to obtain a first calculation of an analyte concentration in the volume of gas and a second analysis method to obtain a second calculation of the analyte concentration. The second calculation can be promoted as the analyte concentration upon determining that the analyte concentration is out of a first target range for the first analysis method.

公开(公告)号：US4591721A

公开(公告)日：1986-05-27

申请号：US659253

申请日：1984-10-10

Applicant: Jacob Y. Wong

Inventor： Jacob Y. Wong

IPC: G01J3/433 ,  G01N21/33 ,  G01J1/42

CPC classification number: G01J3/433 ,  G01N21/33 ,  G01J2003/4334

Abstract: A method and apparatus are described for detecting the presence and amount of elemental oxygen in a sample cell. The intensity of extreme ultraviolet light passing through the sample cell at a wavelength band overlapping at least one of the Schumann-Runge absorption lines of oxygen is detected and compared with a predetermined non-absorbed condition of the ultraviolet light. The non-absorbed condition may be achieved by narrowing the wavelength band such that the band does not overlap the Schumann-Runge absorption line, or may be achieved by detecting the ultraviolet light passing through a reference cell. Also described is a novel ultraviolet source in which a cold zone captures neutral atoms of the emission gas to reduce the affect of resonance absorption of emitted ultraviolet light by such neutral atoms.

Abstract translation: 描述了用于检测样品池中元素氧的存在和量的方法和装置。 检测穿过样品池的极紫外光的强度，该波长带与氧素的至少一个Schumann-Runge吸收线重叠，并与紫外光的预定非吸收条件进行比较。 非吸收条件可以通过使波长带变窄使得该带不与舒曼 - 朗奇吸收线重叠来实现，或者可以通过检测通过参考电池的紫外光来实现。 还描述了一种新的紫外光源，其中冷区捕获发射气体的中性原子，以减少由这种中性原子发射的紫外光的共振吸收的影响。

公开(公告)号：US11704886B2

公开(公告)日：2023-07-18

申请号：US18045695

申请日：2022-10-11

Applicant: Shrenik Deliwala

Inventor： Shrenik Deliwala

IPC: G01J3/28 ,  G01J3/433 ,  G01N21/25 ,  A61B5/00 ,  G01N21/3504 ,  G01N21/95 ,  A61B5/1455

CPC classification number: G01J3/433 ,  G01J3/2823 ,  G01N21/255 ,  A61B5/14551 ,  A61B5/742 ,  G01J2003/4334 ,  G01N21/3504 ,  G01N21/9501

Abstract: Modulation-encoded light, using different spectral bin coded light components, can illuminate a stationary or moving (relative) target object or scene. Response signal processing can use information about the respective different time-varying modulation functions, to decode to recover information about a respective response parameter affected by the target object or scene. Electrical or optical modulation encoding can be used. LED-based spectroscopic analysis of a composition of a target (e.g., SpO2, glucose, etc.) can be performed; such can optionally include decoding of encoded optical modulation functions. Baffles or apertures or optics can be used, such as to constrain light provided by particular LEDs. Coded light illumination can be used with a focal plane array light imager receiving response light for inspecting a moving semiconductor or other target. Encoding can use orthogonal functions, such as an RGB illumination sequence, or a sequence of combinations of spectrally contiguous or non-contiguous colors.

公开(公告)号：US20180059003A1

公开(公告)日：2018-03-01

申请号：US15446878

申请日：2017-03-01

Applicant: EcoTec Solutions, Inc.

Inventor： Laurent Jourdainne

IPC: G01N21/01 ,  G01N33/00 ,  G01N21/31 ,  G01K13/00

CPC classification number: G01N21/01 ,  G01J3/427 ,  G01J2003/423 ,  G01J2003/4334 ,  G01K13/00 ,  G01M3/202 ,  G01M3/22 ,  G01N21/031 ,  G01N21/31 ,  G01N21/3504 ,  G01N21/359 ,  G01N21/39 ,  G01N33/0037 ,  G01N33/004 ,  G01N33/0044 ,  G01N33/0054 ,  G01N2021/399 ,  G01N2201/0221 ,  G01N2201/0612 ,  G01N2201/062 ,  G01N2201/066 ,  G01N2201/1241

Abstract: A system and method to discriminate between a first preselected gas and at least one other preselected gas use of an absorption spectroscopy analyzer that includes a Herriott cell and a temperature sensitive light source. The light source operates at a temperature that emits a beam at a wavelength that corresponds to high absorption by a first preselected gas. When a predetermined level of this gas is detected in a gas sample, the analyzer changes the operating temperature of the light source to emit a beam at a wavelength that corresponds to high absorption by a second preselected gas. The second preselected gas can be a different isotope of the first preselected gas.

公开(公告)号：US20170227461A1

公开(公告)日：2017-08-10

申请号：US15328871

申请日：2014-08-01

Applicant: NEWPORT CORPORATION

Inventor： Anderson CHEN ,  John PARK

IPC: G01N21/55 ,  G01N21/59

CPC classification number: G01N21/55 ,  G01J3/00 ,  G01J3/02 ,  G01J3/0264 ,  G01J3/10 ,  G01J3/433 ,  G01J2003/104 ,  G01J2003/283 ,  G01J2003/2836 ,  G01J2003/4334 ,  G01N21/474 ,  G01N21/59 ,  G01N21/64 ,  G01N2021/556 ,  G01N2201/0691 ,  H02S50/10

Abstract: Systems for measuring optical properties of a specimen are disclosed. The systems are configured to sample signals related to the measurement of the properties of a specimen, and perform software-based coherent detection of the signals to generate resulting measurements are based on the signals acquired at substantially the same time instance. This facilitates the displaying or generating of the desired measurements in real time. In one configuration, the system is configured to direct a modulated light signal at a selected wavelength incident upon a specimen. In another configuration, the system is configured to direct a combined light signal, derived from a plurality of light signals at different wavelengths and modulated with different frequencies, incident upon a specimen. In yet another configuration, the system is configured to direct a plurality of light signals modulated with different frequencies incident upon different regions of a specimen.

公开(公告)号：US11733096B2

公开(公告)日：2023-08-22

申请号：US17352327

申请日：2021-06-20

Applicant: Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences

Inventor： Leiran Wang ,  Qibing Sun ,  Lei Shi ,  Wenfu Zhang

IPC: G01J3/433 ,  G01J3/02 ,  G01J3/10 ,  G02F1/35 ,  G02F1/355 ,  G01N21/3504 ,  G01J3/42

CPC classification number: G01J3/433 ,  G01J3/0229 ,  G01J3/108 ,  G01N21/3504 ,  G02F1/3536 ,  G02F1/3551 ,  G01J2003/423 ,  G01J2003/4334 ,  G02F2202/20 ,  G02F2203/11 ,  G02F2203/56

Abstract: An ultrahigh-resolution mid-infrared (MIR) dual-comb spectroscopy (DCS) measurement device includes a pump unit, a microring resonator (MRR) unit, a modulation unit, a splitting unit, a testing unit, a signal detection unit, a power balance unit, a reference detection unit and a spectral analysis unit. The measurement method includes: adjusting the laser emitted by the pump unit to the MRR unit; adjusting the modulation unit and performing dual-frequency modulation; generating two sets of MIR optical frequency combs (OFCs) with different repetition rates and splitting the MIR OFCs into the test light and the reference light; performing photoelectric conversion on the test light and injecting the test light to the spectral analysis unit; performing photoelectric conversion on the reference light and injecting the reference light to the spectral analysis unit; and performing Fourier transformation and data processing on test results to obtain absorption spectrum of the to-be-tested sample.

公开(公告)号：US20180100999A1

公开(公告)日：2018-04-12

申请号：US15840476

申请日：2017-12-13

Applicant: DAYLIGHT SOLUTIONS, INC.

Inventor： Jeremy Rowlette ,  Edeline Fotheringham ,  Justin Kane ,  Mark V. Bermal ,  David Nichols ,  William Chapman

IPC: G02B21/00 ,  G01J3/02 ,  G01J1/00 ,  G02B21/36 ,  G02B21/08 ,  G01J3/28 ,  G01J3/12 ,  H01S5/14

CPC classification number: G02B21/0072 ,  G01J1/00 ,  G01J3/021 ,  G01J3/10 ,  G01J3/2803 ,  G01J3/4338 ,  G01J2003/1226 ,  G01J2003/1273 ,  G01J2003/2826 ,  G01J2003/4332 ,  G01J2003/4334 ,  G02B21/0032 ,  G02B21/0056 ,  G02B21/0064 ,  G02B21/088 ,  G02B21/367 ,  H01S5/141

Abstract: A spectral imaging device (12) for generating an image (13A) of a sample (10) includes (i) an image sensor (30); (ii) a tunable light source (14) that generates an illumination beam (16) that is directed at the sample (10); (iii) an optical assembly (22) that collects light from the sample (10) and forms an image of the sample (10) on the image sensor (30); and (iv) a control system (32) that controls the tunable light source (14) and the image sensor (30). During a time segment, the control system (32) (i) controls the tunable light source (14) so that the illumination beam (16) has a center wavenumber that is modulated through a first target wavenumber with a first modulation rate; and (ii) controls the image sensor (30) to capture at least one first image at a first frame rate. Further, the first modulation rate is equal to or greater than the first frame rate.

公开(公告)号：US20170059403A1

公开(公告)日：2017-03-02

申请号：US15251952

申请日：2016-08-30

Applicant: Thermo Fisher Scientific (Bremen) GmbH

Inventor： Ulf FROEHLICH ,  Eric WAPELHORST

IPC: G01J3/02 ,  H01S5/0683 ,  G01J1/42 ,  H01S5/068 ,  G01J3/42 ,  G01J3/26

CPC classification number: G01J3/027 ,  G01J1/4257 ,  G01J3/26 ,  G01J3/42 ,  G01J3/433 ,  G01J2003/4334 ,  G01N21/00 ,  G01N21/39 ,  G01N2021/399 ,  H01S5/005 ,  H01S5/0092 ,  H01S5/0612 ,  H01S5/0617 ,  H01S5/0622 ,  H01S5/06804 ,  H01S5/06808 ,  H01S5/0683 ,  H01S5/12 ,  H01S5/4087

Abstract: An operating value of a first laser parameter of a laser device in a laser absorption spectrometer is optimized. The wavelength of laser device emitted light is adjusted by the first or a second laser parameter. The laser absorption spectrometer comprises a light intensity detector measuring the laser light intensity from the laser device. For each of multiple values of the first laser parameter: the light intensity detector measures light intensity obtained across a range of second laser parameter values, and an extremum in the light intensity measure and a peak position for the extremum are identified. A range of first laser parameter values is identified within the values of the first laser parameter for which there is a continuous trend in changes to the identified peak position with changes to the first laser parameter. The first laser parameter operating value is set to be within the identified range.

Abstract translation: 激光吸收光谱仪中的激光装置的第一激光参数的操作值被优化。 通过第一或第二激光参数调节激光器发射光的波长。 激光吸收光谱仪包括测量来自激光装置的激光强度的光强度检测器。 对于第一激光参数的多个值中的每一个：光强度检测器测量在第二激光参数值的范围内获得的光强度，并且识别光强测量中的极值和极值的峰值位置。 在第一激光参数的值内识别出一系列第一激光参数值，在第一激光参数的值中，随着对第一激光参数的改变，对所识别的峰位置的变化存在连续趋势。 第一激光参数工作值设定在识别范围内。

公开(公告)号：US20240337534A1

公开(公告)日：2024-10-10

申请号：US18296818

申请日：2023-04-06

Applicant: Vector Atomic, Inc.

Inventor： Martin Machai BOYD ,  Micah Perry LEDBETTER ,  William Lunden ,  Guthrie Bran PARTRIDGE ,  Jonathan David ROSLUND ,  Daniel SHEREDY

IPC: G01J3/44 ,  G01J3/12 ,  G01J3/42 ,  G01J3/433 ,  G01J3/447

CPC classification number: G01J3/4406 ,  G01J3/4338 ,  G01J3/447 ,  G01J2003/1252 ,  G01J2003/423 ,  G01J2003/4334

Abstract: Embodiments herein describe various arrangements of an optical bench used to perform spectroscopy. For example, a spectroscopy system may include a pump optical signal and a probe optical signal that are transmitted through a vapor cell on the optical bench. The optical bench can further include one or more optical components (e.g., beam splitter and a thin film polarizer) for redirecting a portion of the probe and pump optical signals to photodiodes. In one embodiment, the measurements obtained from the photodiodes can be used to perform multiple tasks. For example, the measurements can be used to adjust the power of the optical signals in the optical bench (e.g., make DC power adjustments), perform amplitude modulation correction, and lock a laser frequency to a peak of an absorption spectrum of the vapor in the vapor cell.

公开(公告)号：US20240094054A1

公开(公告)日：2024-03-21

申请号：US18463088

申请日：2023-09-07

Applicant: Alcon Inc.

Inventor： Lu Yin ,  Ramesh Sarangapani ,  Kongfeng Berger ,  Vignesh Suresh

IPC: G01J3/28 ,  A61B3/14 ,  G01J3/10 ,  G01J3/433

CPC classification number: G01J3/2823 ,  A61B3/14 ,  G01J3/10 ,  G01J3/433 ,  G01J2003/102 ,  G01J2003/2826 ,  G01J2003/4334

Abstract: In certain embodiments, a system, a computer-implemented method, and computer-readable medium for generating multispectral imaging (MSI) based on performing an analytical MSI operation are described. The analytical MSI operation includes synchronizing a scan of a target by a broadband imaging device with a generation of a plurality of light signals, from a plurality of broadband illumination sources, directed towards the target. A set of spectral information associated with the target is generated, based on the scan of the target with the broadband imaging device. A set of multispectral imaging (MSI) information associated with the target is generated, based on performing an MSI operation using at least the set of spectral information. Ophthalmic information is determined based on the set of MSI information.