公开(公告)号：US11150130B2

公开(公告)日：2021-10-19

申请号：US16808238

申请日：2020-03-03

Applicant: Si-Ware Systems

Inventor： Yasser M. Sabry ,  Mohammad Sakr ,  Bassam A. Saadany ,  Momen Anwar ,  Mohamed H. Al Haron

IPC: G01J3/02 ,  G01J3/08 ,  G01J3/10 ,  G01N33/00

Abstract: Aspects of the disclosure relate to a multi-pass gas cell that includes a set of two or more reflectors, an input collimating optical component, and an output focusing optical component. The input and output optical components are integrated with at least one of the two or more reflectors. For example, the input and output optical components may be integrated on opposite ends of a single one of the reflectors or may be integrated on the same end of a single reflector. The input and output optical components may further be integrated with different reflectors. In some examples, the set of reflectors and optical components may be fabricated within the same substrate.

公开(公告)号：US20210310934A1

公开(公告)日：2021-10-07

申请号：US17212101

申请日：2021-03-25

Applicant: Verifood, Ltd.

Inventor： Elad Heiman ,  Oded Ben-David ,  Uri Kinrot ,  Oren Cohen

IPC: G01N21/25 ,  G01J3/02 ,  G01J3/10

Abstract: Accessories for improving sensitivity or efficiency of optical spectrometers and methods for utilizing such accessories are disclosed.

公开(公告)号：US20210310867A1

公开(公告)日：2021-10-07

申请号：US17351067

申请日：2021-06-17

Applicant: Apple Inc.

Inventor： Trent D. Ridder ,  Mark Alan Arbore ,  Gary Shambat ,  Robert Chen ,  David I. Simon ,  Miikka M. Kangas

IPC: G01J3/427 ,  G01J3/10 ,  G01J3/28 ,  G01J3/42 ,  G01N21/35

Abstract: Methods and systems for measuring one or more properties of a sample are disclosed. The methods and systems can include multiplexing measurements of signals associated with a plurality of wavelengths without adding any signal independent noise and without increasing the total measurement time. One or more levels of encoding, where, in some examples, a level of encoding can be nested within one or more other levels of encoding. Multiplexing can include wavelength, position, and detector state multiplexing. In some examples, SNR can be enhanced by grouping together one or more signals based on one or more properties including, but not limited to, signal intensity, drift properties, optical power detected, wavelength, location within one or more components, material properties of the light sources, and electrical power. In some examples, the system can be configured for optimizing the conditions of each group individually based on the properties of a given group.

公开(公告)号：US20210310865A1

公开(公告)日：2021-10-07

申请号：US17349225

申请日：2021-06-16

Applicant: Hitachi High-Tech Corporation

Inventor： Kei SHIMURA ,  Mizuki OKU ,  Kenji AIKO

IPC: G01J3/10 ,  G01N21/3581 ,  G02F1/39 ,  G01J3/02 ,  G01J3/32 ,  G01J3/42 ,  G02F1/37

Abstract: This far-infrared spectroscopy device is provided with: a variable wavelength far-infrared light source that generates first far-infrared light; an illuminating optical system that irradiates a sample with the first far-infrared light; a detecting nonlinear optical crystal that converts second far-infrared light into near-infrared light using pump light, said second far-infrared light having been transmitted from the sample; and a far-infrared image-forming optical system that forms an image of the sample in the detecting nonlinear optical crystal. The irradiation position of the first far-infrared light on the sample does not depend on the wavelength of the first far-infrared light.

公开(公告)号：US11129599B2

公开(公告)日：2021-09-28

申请号：US16700423

申请日：2019-12-02

Applicant: OUTSENSE DIAGNOSTICS LTD.

Inventor： Ishay Attar

IPC: A61B10/00 ,  G01N33/493 ,  G01N21/31 ,  G06T7/00 ,  G01J3/42 ,  G01J3/10 ,  G01J3/28 ,  E03D11/13

Abstract: Apparatus and methods are described for use with a bodily emission of a subject that is disposed within a toilet bowl. While the bodily emission is disposed within the toilet bowl, light is received from the toilet bowl using one or more light sensors. Using a computer processor, one or more spectral components within the received light that are indicative of light absorption by a component of erythrocytes are detected, by analyzing the received light. In response thereto, the computer processor determines that there is a presence of blood within the bodily emission. The computer processor generates an output on an output device, at least partially in response thereto. Other applications are also described.

公开(公告)号：US20210293618A1

公开(公告)日：2021-09-23

申请号：US17263147

申请日：2019-07-25

Applicant: NOVA MEASURING INSTRUMENTS LTD.

Inventor： Gilad Barak ,  Yonatan OREN

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/44 ,  G01J3/28 ,  G01J3/10

Abstract: A polarized Raman Spectrometric system for defining parameters of a polycrystaline material, the system comprises a polarized Raman Spectrometric apparatus, a computer-controlled sample stage for positioning a sample at different locations, and a computer comprising a processor and an associated memory. The polarized Raman Spectrometric apparatus generates signal(s) from either small sized spots at multiple locations on a sample or from an elongated line-shaped points on the sample, and the processor analyzes the signal(s) to define the parameters of said polycrystalline material.

公开(公告)号：US20210293617A1

公开(公告)日：2021-09-23

申请号：US17197036

申请日：2021-03-10

Applicant: InnoSpectra Corporation

Inventor： Fei-Peng Chang ,  Kuo-Sheng Huang ,  Hsi-Pin Li

IPC: G01J3/02 ,  G01J3/10 ,  G01J3/42

Abstract: A spectrometer is configured to measure a spectrum of a to-be-measured object and includes a spectrometer body and a sampling module. The spectrometer body has a light-incident port. The sampling module is disposed on the spectrometer body and includes a light source fixing base and at least one light source. The light source fixing base has at least one cup-shaped reflecting curved surface. The light source is disposed on the light source fixing base. The cup-shaped reflecting curved surface surrounds the light source. Illumination light emitted by the light source is reflected and converged by the cup-shaped reflecting curved surface and transmitted to the to-be-measured object. The to-be-measured object diffusely reflects the illumination light into to-be-measured light. The to-be-measured light enters the spectrometer body through the light-incident port and is measured by the spectrometer body. In the invention, high spectrum quality is achieved and a small volume is provided.

公开(公告)号：US20210263298A1

公开(公告)日：2021-08-26

申请号：US17314553

申请日：2021-05-07

Applicant: Seiko Epson Corporation

Inventor： Tomonori MATSUSHITA ,  Nozomu HIROKUBO

IPC: G02B26/00 ,  G01J3/28 ,  G01J3/26 ,  G01J3/02 ,  G01J3/06 ,  G01J3/10 ,  G01J3/32 ,  G01J3/42 ,  G01J3/50

Abstract: An optical module includes a wavelength variable interference filter having a fixed reflective film, a movable reflective film which faces the fixed reflective film with a gap between reflective films interposed therebetween, and an electrostatic actuator that changes the gap between reflective films, and a gap control unit that controls the electrostatic actuator. The gap control unit controls the electrostatic actuator on the basis of an order which is set in accordance with a wavelength to be measured, and changes the gap between the reflective films.

公开(公告)号：US20210262860A1

公开(公告)日：2021-08-26

申请号：US17243157

申请日：2021-04-28

Applicant: Massachusetts Institute of Technology

Inventor： Juejun Hu ,  Derek Kita ,  Jerome Michon

IPC: G01J3/44 ,  G01J3/02 ,  G01N21/65 ,  G01J3/10

Abstract: A method of performing Raman spectroscopy can include guiding a Raman pump beam with an optical fiber, where the Raman pump beam inducing fluorescence in the optical fiber. The beam and the fluorescence are coupled to a photonic integrated circuit (PIC) via the fiber. The beam is used to excite a sample in optical communication with the PIC via evanescent coupling and induces Raman scattering in the sample. The Raman scattering is collected via the PIC, and the Raman pump beam as well as the fluorescence is filtered out from the Raman scattering via the PIC.

公开(公告)号：US11099077B1

公开(公告)日：2021-08-24

申请号：US16430555

申请日：2019-06-04

Applicant: The United States of America, as Represented by the Secretary of the Navy

Inventor： Clinton F. Stammer ,  David A. Sisemore ,  Jack Ronald White

IPC: G01J5/60 ,  G01J3/10 ,  H01L27/146 ,  G01J3/02

Abstract: A background subtracted spectrometer for airborne infrared radiometry. The background subtracted spectrometer may comprise: a filter array, a detector, and a dewar containing liquid nitrogen. The filter array may be configured to selectively pass different spectral bands of infrared radiation. The filter array may comprise: at least one linear variable filter and a plurality of bandpass filters. The detector may comprise a focal plane array configured to receive the different spectral bands of infrared radiation simultaneously transmitted through the filter array. The detector may generate one or more electrical signals indicative of infrared radiation intensity as a function of wavelength. The filter array may be coupled to the focal plane array of the detector, and the filter array and detector may be conductively cooled by the liquid nitrogen to improve signal-to-noise ratio and spectral measurements. The background subtracted spectrometer preferably lacks a circular variable filter and relay lens.