公开(公告)号：US20240302282A1

公开(公告)日：2024-09-12

申请号：US18118938

申请日：2023-03-08

Applicant: Rosemount Aerospace Inc.

Inventor： Mark D. Ray

IPC: G01N21/65 ,  G01M3/04

CPC classification number: G01N21/65 ,  G01M3/04 ,  G01N2201/0636 ,  G01N2201/08

Abstract: A gas detection system includes a first optical fiber bundle connected to a first multi-pass cell for connecting the first multi-pass cell to a Raman spectrum analyzer. A second optical fiber bundle is connected to the first multi-pass cell for connecting the first multi-pass cell to a second multi-pass cell. The second optical fiber bundle can include a delay coil configured to provide temporal spacing between spectral returns from the first multi-pass cell and from the second multi-pass cell. The first and second multi-pass cells can be biconic multipass cells with a the first optical fiber bundle directed toward a first D-mirror, which is directed toward a T-mirror, which is directed toward a second D-mirror, which is directed toward the second optical fiber bundle. The D-mirrors can be on an opposite end of the first multi-pass cell from the T-mirror and the first and second optical fiber bundles.

公开(公告)号：US12083519B2

公开(公告)日：2024-09-10

申请号：US17284386

申请日：2019-10-11

Applicant: DXCOVER LIMITED

Inventor： Matthew Baker ,  Mark Hegarty ,  Holly Jean Butler

IPC: B01L3/00 ,  G01N21/03 ,  G01N21/35 ,  G01N21/3577 ,  G01N21/552

CPC classification number: B01L3/50825 ,  G01N21/0303 ,  G01N21/3577 ,  G01N21/552 ,  B01L2300/046 ,  B01L2300/0832 ,  G01N2021/3595 ,  G01N2201/0636

Abstract: A sample container (100) for use in a ATR-FTIR spectrometer, comprises an internal reflection element “IRE” (101), the IRE comprising a first surface (104) and a second surface (105). The first surface (104) is configured to receive a sample (20) and the second surface (105) is an infrared beam-receiving surface. The IRE (101) forms at least a portion of a wall of the sample container (100), such that in use, when a sample (20) is provided on the first surface (104) of the IRE (101), the sample (20) is provided within the sample container (100).

公开(公告)号：US20240288362A1

公开(公告)日：2024-08-29

申请号：US18586650

申请日：2024-02-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Kohei YAMADA ,  Shoichi TAKASUNA

IPC: G01N21/31 ,  G02B26/08

CPC classification number: G01N21/31 ,  G02B26/0816 ,  G01N2201/0636

Abstract: An optical device includes: an incident optical system; an analysis optical system; and a length measurement optical system. The incident optical system includes a laser light source, and an incident light dividing element that divides the laser light. The analysis optical system includes a first light dividing element that divides the first divided light and then mixes the light, a first mirror that adds a first modulation signal to the one first divided light by movement and reflection, a second mirror, and a first light receiving element that receives the first divided light including a sample-derived signal and the first modulation signal. The length measurement optical system includes a second light dividing element that divides the second divided light and then mixes the light, an optical feedback unit that feeds back the one second divided light to the second light dividing element, and a second light receiving element that receives the second divided light including a displacement signal generated by the first mirror.

公开(公告)号：US12066392B2

公开(公告)日：2024-08-20

申请号：US17922500

申请日：2021-04-19

Applicant: SUMIDA CORPORATION ,  Kyoto University

Inventor： Masateru Hashimoto ,  Yoshiharu Yoshii ,  Yuki Takemura ,  Norikazu Mizuochi

IPC: G01N24/10 ,  G01N21/64 ,  G02B17/00

CPC classification number: G01N24/10 ,  G01N21/64 ,  G02B17/004 ,  G01N2201/0636

Abstract: A substrate 1 includes a color center excited by excitation light, and at least a pair of reflection members 21a, 21b are arranged with gaps from the substrate 1. The substrate 1 causes the excitation light entering the substrate 1 to exit through its surfaces without reflection, and the reflection members 21a, 21b cause the exited excitation light to reflect at the reflection surface 21-1 or 21-2 and enter the substrate 1, and cause the excitation light to repeatedly enter and exit the substrate 1 and thereby pass through the substrate 1 only a predetermined number of times. Here, the irradiating device 4 emits the excitation light such that the excitation light is incident to the reflection surface 21-1 or 21-2 with an angle perpendicular to one axis among two axes of the reflection surface 21-1 or 21-2 and with a predetermined slant angle from the other axis.

公开(公告)号：US20240255432A1

公开(公告)日：2024-08-01

申请号：US18560906

申请日：2022-05-03

Applicant: Thermo Fisher Scientific (Ecublens) SARL

Inventor： Patrick LANCUBA

IPC: G01N21/71

CPC classification number: G01N21/718 ,  G01N2201/06113 ,  G01N2201/0636

Abstract: A method for compositional analysis, in particular laser-induced breakdown spectroscopy (LIBS), includes providing a sample having a surface, moving an ablation point to a plurality of positions on the surface along an arc path defined by a plurality of arcs, wherein the plurality of arcs extend from an edge of the area to another edge of the area, wherein the arc path follows adjacent arcs of the plurality of arcs, pulsing an energy source to provide an electromagnetic energy beam to ablate material at the ablation point, collecting an emission spectrum in response to pulsing the energy source, and analyzing the emission spectrum to determine a composition at the surface.

公开(公告)号：US12019017B2

公开(公告)日：2024-06-25

申请号：US17090090

申请日：2020-11-05

Applicant: Lumileds LLC

Inventor： Hisashi Masui ,  Oleg Borisovich Shchekin ,  Franklin Chiang

IPC: G01N21/47 ,  G01N21/61 ,  G01N33/00

CPC classification number: G01N21/61 ,  G01N21/47 ,  G01N33/0004 ,  G01N33/004 ,  G01N33/0047 ,  G01N2201/0631 ,  G01N2201/0636

Abstract: A gas sensing system can allow a gas sample to permeate hollow spaces within a porous scattering material. The porous scattering material can be substantially transparent at an illumination wavelength. An emitter can illuminate the porous scattering material and the gas sample with light having a spectrum that includes the illumination wavelength. A sensor can detect a level of light that has traversed the porous scattering material. Using, for example, the Beer-Lambert Law, the system can determine a concentration of the gas material in the gas sample. The scattering can greatly increase an optical path length through the porous scattering material, compared with a linear dimension of the porous scattering material. The increased optical path length can allow a gas chamber to shrink in size, thereby decreasing a size of the gas sensing system without a corresponding decrease in a sensitivity and/or an accuracy of the system.

公开(公告)号：US20240201085A1

公开(公告)日：2024-06-20

申请号：US18554145

申请日：2022-03-15

Applicant: Ushio Denki Kabushiki Kaisha

Inventor： Toshikazu NAGASHIMA

IPC: G01N21/49 ,  G01N21/25 ,  G01N21/84

CPC classification number: G01N21/49 ,  G01N21/255 ,  G01N21/84 ,  G01N2021/845 ,  G01N2201/0636 ,  G01N2201/0638 ,  G01N2201/0697 ,  G01N2201/1042

Abstract: A conveyance device supports and conveys an object. The conveyance device has a support portion in which an opening narrower than the object is provided at a position where the object is supported. A lighting device irradiates a first surface of the object with measurement light having a wavelength changing over time through the opening of the support portion. A light receiving device detects object light that is diffusely transmitted light emitted from a second surface of the object.

公开(公告)号：US12007336B2

公开(公告)日：2024-06-11

申请号：US17116100

申请日：2020-12-09

Applicant: II-VI Delaware, Inc.

Inventor： Danny Chan

IPC: G01N21/958 ,  G01N21/15 ,  G01N21/94 ,  G05B19/406

CPC classification number: G01N21/958 ,  G01N21/94 ,  G05B19/406 ,  G01N2021/157 ,  G01N2201/06113 ,  G01N2201/0636 ,  G05B2219/37275 ,  G05B2219/50203

Abstract: A sensing apparatus monitors a cover optic on a laser processing head for contamination, indicating the need to replace the cover optic. The apparatus includes at least one reflector and at least one sensors that are disposed in the processing head adjacent a periphery of the cover optic. The reflector reflects radiation from the laser beam deflected from contamination on the cover optic and incident thereagainst. The sensor is offset from the reflector and detects at least a portion of the radiation reflected by the reflector. A controller in communication with the sensor can determine the contamination on the cover optic based on the detected radiation.

公开(公告)号：US20240175826A1

公开(公告)日：2024-05-30

申请号：US18082562

申请日：2022-12-15

Applicant: PlayNitride Display Co., Ltd.

Inventor： Yi-Chia Hwang ,  Ching-Liang Lin

IPC: G01N21/95

CPC classification number: G01N21/9505 ,  G01N2201/0636

Abstract: A wafer defect inspection apparatus including a carrier base, a light source module, a beam splitter, filters and image sensors are provided. The carrier base carries a sample to be tested. The light source module includes an illuminating unit and a pellicle mirror. The illuminating unit emits an inspection light ray. A reflective surface is capable of reflecting the inspection light ray to the sample to be tested, so that a reflective light ray formed by reflecting the inspection light ray reflected by the sample to be tested passes through the pellicle mirror and is then split into splitting light rays by the beam splitter. The filters are configured to be passed through by different bands corresponding to the splitting light rays. The image sensors receive the splitting light rays to generate imaging frames. Two corresponding positions in any two of the imaging frames have two different contrast ratios.

公开(公告)号：US20240175803A1

公开(公告)日：2024-05-30

申请号：US18432313

申请日：2024-02-05

Applicant: Anhui University of Science and Technology

Inventor： Huawei JIN ,  Xu WANG ,  Haowei WANG

IPC: G01N21/17 ,  G01N1/14 ,  G01N33/00

CPC classification number: G01N21/1702 ,  G01N1/14 ,  G01N33/0027 ,  G01N2021/1704 ,  G01N2201/06113 ,  G01N2201/0636

Abstract: Disclosed is a synchronous detection system for a trace nitrogen-oxygen compound based on photoacoustic spectrometry, including a NOx (Nitrogen Oxide) detection air channel, a dust detection air channel and a double-photoacoustic spectrometry detection mechanism which are mutually connected in parallel; the NOx detection air channel includes a background interference detection air pipe, a NO2 detection air pipe and a NO detection air pipe that are mutually connected in parallel, and a NOx photoacoustic detection cavity; and the dust detection air channel includes a dust detection air pipe and a dust photoacoustic detection cavity communicating with the dust detection air pipe.