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    Interferometric device
    151.
    发明授权
    Interferometric device 失效
    INTERFEROMETRIC设备

    公开(公告)号：US3684379A

    公开(公告)日：1972-08-15

    申请号：US3684379D

    申请日：1971-07-06

    Applicant: NATIONALE D ETUDES DE RECH AER

    Inventor： GIRARD ANDRE J

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

    CPC classification number: G01J3/4532

    Abstract: A composite body of radiation-transparent material, acting as an interferometer, comprises two closely juxtaposed prismatic bars of like refractive index contacting each other along a semireflecting interface which bisects a right angle between two outer bar surfaces. One of these orthogonally adjoining surfaces constitutes an entrance side for incident radiation to be split into two components at the diagonally extending interface, the other of these surfaces representing an exit side for such radiation. The throughgoing radiant component is redirected to the beam-splitting interface and thence to the exit side by a reflector at or just beyond a third prism surface parallel to the entrance side, the reflected component being returned to that interface by another reflector at or just beyond a fourth prism surface which diverges longitudinally from the exit side at a small angle whereby the path lengths of the two components differ in length by amounts varying over the length of the body. In an alternate embodiment, the beam-splitting internal surface and the reflecting surfaces are formed by structural elements separated from one another and from the entrance and exit sides by empty spaces, i.e. air gaps or evacuated zones, with a refractive index n 1.

    Abstract translation: 用作干涉仪的辐射透明材料的复合体包括两个具有类似折射率的紧密并置的棱镜条，其沿着将两个外部杆表面之间的直角平分的半反射界面彼此接触。 这些正交邻接表面中的一个构成入射侧，用于入射辐射在对角线延伸的界面处分成两个部件，这些表面中的另一个表示用于这种辐射的出射侧。 通过辐射分量被重定向到光束分离界面，并且然后通过平行于入口侧的第三棱镜表面处或刚好超过第三棱镜表面处的反射器到达出射侧，反射部件在另一个反射器处或刚刚超过另外的反射器返回到该界面 第四棱镜表面以小的角度从出射侧纵向地分开，由此两个部件的路径长度在身体的长度上变化的长度不同。 在替代实施例中，分束内表面和反射表面由结构元件形成，该结构元件由折射率为n = 1的空白空间，即空气间隙或抽空区域从入口侧和出射侧分离。

    Spectrometry device
    152.
    发明授权
    Spectrometry device 有权

    公开(公告)号：US12235157B2

    公开(公告)日：2025-02-25

    申请号：US17640225

    申请日：2020-08-28

    Applicant: NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY

    Inventor： Ichiro Ishimaru

    IPC: G01J3/02 ,  G01J3/453

    Abstract: A spectrometry device wherein light rays emitted from an object face measurement point combine into one parallel light beam by an objective lens, this is divided into a first and second light beam by a phase shifter, and the first and second light beam emit toward a light-receiving face of a photodetector while providing an optical path length difference. A light-shielding plate is arranged on a face optically conjugate the object face respective to the objective lens, and only light passed through translucent portions of the light-shielding plate is directed to the objective lens. A lateral length of each light-shielding plate translucent portion and the interval between two adjacent translucent portions are based on the objective lens focal length, the distance from the phase shifter to the photodetector light-receiving face, a photodetector pixel pitch, a pixel length, and a predetermined wavelength range of the light emitted from the measurement point.

    Blood-solute calculation with a mobile device using non-invasive spectroscopy
    153.
    发明授权
    Blood-solute calculation with a mobile device using non-invasive spectroscopy 有权

    公开(公告)号：US12150759B2

    公开(公告)日：2024-11-26

    申请号：US18302569

    申请日：2023-04-18

    Applicant: Google LLC

    Inventor： Christopher David Workman ,  Ricky Bomber ,  Kelly Dobson

    IPC: A61B5/1455 ,  A61B5/00 ,  G01J3/02 ,  G01J3/453 ,  A61B5/145

    Abstract: This document describes techniques and devices for blood-solute calculation with a mobile device using non-invasive spectroscopy. A mobile device (502) includes a light source (504) that emits light toward an interferometer (508) that uses mirrors to separate and recombine the light. The interferometer directs the recombined light toward a person. Light reflected from, or transmitted through, the person is received through a reception port (506) to a photodetector (510) that outputs photodetector data that corresponds to a measured light intensity of the reflected and transmitted light as a function of a path length of the light or a mirror position of the interferometer. Based on the photodetector data, an interferogram is generated. Applying a technique such as a Fourier transform to the interferogram, a spectrum data set of the reflected and transmitted light is generated. Based on the spectrum data set, a concentration of solutes in the person's blood is calculated.

    Refractive scanning interferometer
    160.
    发明授权
    Refractive scanning interferometer 有权

    公开(公告)号：US11668603B2

    公开(公告)日：2023-06-06

    申请号：US17339067

    申请日：2021-06-04

    Applicant: Rapid Phenotyping Pty Limited

    Inventor： Selene Rodd-Routley

    IPC: G01J3/453 ,  G01J3/14 ,  G01J9/02

    CPC classification number: G01J3/4537 ,  G01J3/14 ,  G01J9/02 ,  G01J2009/0284 ,  G01J2009/0288

    Abstract: Embodiments are disclosed relating to a refractively-scanning interferometer comprising an aperture that receives an incident light beam at a receiving angle, a beam splitter configured to split the incident light beam into a first beam and a second beam, a first and a second reflector arranged to reflect the first beam and second beam, respectively, towards a combining optical element, and a refractive Optical Path Difference (rOPD) assembly interposed between the beam splitter and the first reflector, wherein the rOPD Assembly refracts the first light beam an even number of times with induced phase discrepancy being a vector sum of a first phase discrepancy induced by a first refraction and a second phase discrepancy induced by a second refraction, the rOPD Assembly being configured such that the first phase discrepancy is substantially opposite in direction to the second phase discrepancy, a portion of the first and second phase discrepancies cancelling one another out to decrease magnitude of the phase discrepancy.

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