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公开(公告)号：US5268736A
公开(公告)日：1993-12-07
申请号：US843334
申请日：1992-02-28
Applicant: William S. Prather
Inventor： William S. Prather
CPC classification number: G01N21/0303 , G01N2021/036 , G01N2201/066
Abstract: A device for use in making spectrophotometric measurements of fluid samples. In particular, the device is a measurement cell containing a movable and a fixed lens with a sample of the fluid therebetween and through which light shines. The cell is connected to a source of light and a spectrophotometer via optic fibers. Movement of the lens varies the path length and also pumps the fluid into and out of the cell. Unidirectional inlet and exit valves cooperate with the movable lens to assure a one-way flow of fluid through the cell. A linear stepper motor controls the movement of the lens and cycles it from a first position closer to the fixed lens and a second position farther from the fixed lens, preferably at least 10 times per minute for a nearly continuous stream of absorption spectrum data.
Abstract translation: 用于对流体样品进行分光光度测量的装置。 特别地，该装置是包含可移动和固定透镜的测量单元，其间具有流体样本并通过其照射。 电池通过光纤连接到光源和分光光度计。 透镜的移动会改变路径长度，并将流体泵入和流出电池。 单向入口和出口阀与可移动透镜配合以确保流体通过单元的单向流动。 线性步进电机控制透镜的移动并使其从更靠近固定透镜的第一位置循环，并且对于几乎连续的吸收光谱数据流优选地至少10次/分钟。
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公开(公告)号：US4688943A
公开(公告)日：1987-08-25
申请号：US848815
申请日：1986-04-07
Applicant: Dariush Modarress
Inventor： Dariush Modarress
CPC classification number: G01N21/534 , G01N2201/066
Abstract: An apparatus and method for determining the extinction of laser light through a fluid is disclosed. The fluid is passed in a conduit having a light transmissive window. A laser beam having intensity I.sub.1 is passed through the window into the fluid. A prong shaped probe having first and second probe sections is disposed in the fluid flow. The first probe section includes a beamsplitter at a distance d.sub.1 from the window for redirecting a portion of the beam onto a first photodiode array, to determine the beam intensity I.sub.2. The remaining portion of the beam tranverses a distance d.sub.2 and is directed through a prism onto a second photodiode array to determine its intensity I.sub.3. Based on the intensities I.sub.1, I.sub.2 and I.sub.3 and given d.sub.1 and d.sub.2, the extinction values E.sub.1 and E.sub.2 may be calculated. Fluid optical density may then be determined as a function of the extinction.
Abstract translation: 公开了一种用于确定通过流体的激光消光的装置和方法。 流体在具有透光窗的导管中通过。 具有强度I1的激光束通过窗口进入流体。 具有第一和第二探针部分的叉形探针设置在流体流中。 第一探测部分包括与窗口距离d1的分束器，用于将光束的一部分重定向到第一光电二极管阵列上，以确定光束强度I2。 光束的剩余部分转换距离为d2，并通过棱镜被引导到第二光电二极管阵列上以确定其强度I3。 基于强度I1，I2和I3，给定d1和d2，可以计算消光值E1和E2。 然后可以将流体光密度确定为消光的函数。
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公开(公告)号：US4099882A
公开(公告)日：1978-07-11
申请号：US731870
申请日：1976-10-13
Applicant: Lars-Goran Hjalmar Andren , Rune Harald Bjorkman , Richard Lee Easterday , Hans Gosta Munktell
Inventor： Lars-Goran Hjalmar Andren , Rune Harald Bjorkman , Richard Lee Easterday , Hans Gosta Munktell
CPC classification number: G01N21/05 , G01N21/0303 , G01N2201/066
Abstract: In optical analysis of fluids a method and an apparatus are described by which it is possible to continuously measure the concentration value of the fluid within a very broad range of concentration values. In one single test glass optical paths of different lengths are provided substantially perpendicularly to each other. The concentration value of the fluid is measured simultaneously along the two mutually perpendicular optical paths.
Abstract translation: 在流体的光学分析中，描述了可以在非常宽的浓度值范围内连续测量流体的浓度值的方法和装置。 在一个单独的测试玻璃中，基本上彼此垂直地设置不同长度的光路。 沿两个相互垂直的光路同时测量流体的浓度值。
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64.发明公开公开(公告)号：US20240068942A1
公开(公告)日：2024-02-29
申请号：US18240859
申请日：2023-08-31
Applicant: Carrier Corporation
Inventor： Jacob Kerling , Slade Culp
IPC: G01N21/53
CPC classification number: G01N21/53 , G01N2201/066
Abstract: A cap for a light emitter and/or light receiver of a smoke detector for eliminating a direct line of sight between the light emitter and the light receiver is disclosed. The cap comprises an enclosure of a predefined profile having a predetermined open area at a predetermined position on the enclosure, which is adapted to be removably fitted over one or more of the light emitter and/or the light receiver. The cap upon fitting over any of the light emitter and the light receiver, the cap blocks a direct line of sight between the light emitter and the light receiver and allows the light receiver to receive only the light being reflected by smoke and a predefined amount of clean air signal present within the smoke detector.
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65.发明申请公开(公告)号：US20190204221A1
公开(公告)日：2019-07-04
申请号：US16296010
申请日：2019-03-07
Applicant: Apple Inc.
Inventor： Mark Alan ARBORE , Matthew A. TERREL
CPC classification number: G01N21/59 , G01N21/49 , G01N2021/1782 , G01N2021/4709 , G01N2021/4711 , G01N2201/066 , G01N2201/0691 , G01N2201/0696 , G01N2201/12
Abstract: An illuminator/collector assembly can deliver incident light to a sample and collect return light returning from the sample. A sensor can measure ray intensities as a function of ray position and ray angle for the collected return light. A ray selector can select a first subset of rays from the collected return light at the sensor that meet a first selection criterion. In some examples, the ray selector can aggregate ray intensities into bins, each bin corresponding to rays in the collected return light that traverse within the sample an estimated optical path length within a respective range of optical path lengths. A characterizer can determine a physical property of the sample, such as absorptivity, based on the ray intensities, ray positions, and ray angles for the first subset of rays. Accounting for variations in optical path length traversed within the sample can improve accuracy.
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Patent Agency Ranking
公开(公告)号：US20190195787A1
公开(公告)日：2019-06-27
申请号：US16327058
申请日：2017-08-16
Applicant: DRÄGER SAFETY AG & CO. KGAA
Inventor： Arne TRÖLLSCH
IPC: G01N21/3504 , G01N21/03
CPC classification number: G01N21/3504 , G01N21/031 , G01N2021/3137 , G01N2201/066
Abstract: A measuring device is provided for measuring the absorption of gases. The measuring device (1) includes a radiation source (2), a first detector element (3), a second detector element (9) and a reflector array (4). The reflector array (4) defines a first optical path (5) between the radiation source (2) and the first detector element (3) and defines a second optical path (10) between the radiation source (2) and the second detector element (9). The first optical path (5) has at least two points of intersection with itself and the second detector element (9) is arranged outside of a first plane which is defined by the radiation source (2) and two points of intersection (6) of the first optical path (5).
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67.发明申请公开(公告)号：US20180356392A1
公开(公告)日：2018-12-13
申请号：US15996898
申请日：2018-06-04
Applicant: Roche Diagnostics Operations, Inc.
Inventor： Michael Rein
CPC classification number: G01N33/49 , G01N21/17 , G01N21/51 , G01N21/94 , G01N33/491 , G01N2015/045 , G01N2015/0693 , G01N2035/0406 , G01N2035/1018 , G01N2201/066
Abstract: A method for determining properties of a laboratory sample contained in a laboratory sample container is presented. The method comprises measuring projections of the laboratory sample container comprising the laboratory sample by irradiating light to the laboratory sample container at different projection angle and determining the properties by tomographic reconstruction based on the projections.
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公开(公告)号：US20180164214A1
公开(公告)日：2018-06-14
申请号：US15580265
申请日：2016-06-30
Applicant: IMEC VZW
Inventor： Xavier Rottenberg
CPC classification number: G01N21/59 , B01L3/502715 , B01L2300/0816 , B01L2400/0406 , B01L2400/0457 , B01L2400/0487 , G01N21/31 , G01N21/3577 , G01N21/552 , G01N21/61 , G01N21/7746 , G01N2021/0346 , G01N2021/3137 , G01N2021/3166 , G01N2021/3181 , G01N2201/062 , G01N2201/0633 , G01N2201/0636 , G01N2201/066 , G01N2201/0873
Abstract: The present disclosure relates to a device for measuring an optical absorption property of a fluid as function of wavelength. The device comprises a broadband light source for emitting light, a plurality of integrated optical waveguides for guiding this light, and a light coupler for coupling the emitted light into the integrated optical waveguides such that the light coupled into each integrated optical waveguide has substantially the same spectral distribution. The device also comprises a microfluidic channel for containing the fluid, arranged such as to allow an interaction of the light propagating through each waveguide with the fluid in the microfluidic channel. Each integrated optical waveguide comprises an optical resonator for filtering the light guided by the waveguide according to a predetermined spectral component. The spectral component corresponding to each waveguide is substantially different from the spectral component corresponding to another of the waveguides.
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公开(公告)号：US20180070813A1
公开(公告)日：2018-03-15
申请号：US15802829
申请日：2017-11-03
Applicant: ADOM, Advanced Optical Technologies Ltd
Inventor： Yoel Arieli , Yoel Cohen , Shlomi Epstein , Dror Arbel , Ra'anan Gefen
CPC classification number: A61B3/101 , A61B3/0025 , A61B3/10 , A61B3/1005 , A61B3/152 , G01B9/02021 , G01B9/02025 , G01B9/02027 , G01B9/02044 , G01B9/02087 , G01B9/0209 , G01B11/06 , G01B11/0625 , G01B11/0675 , G01B2290/45 , G01J3/00 , G01N21/274 , G01N2201/066 , G01N2201/127 , G02B3/08 , G06T2207/30041
Abstract: Apparatus and methods are described, for detecting the surface topography of a portion of a curved surface of an object. A beam of light is directed toward the surface from a broad angle of incidence with respect to an optical axis of a camera. Light reflected from the surface is received by the camera, via a narrow-angle aperture. One or more darkened regions in the received light are detected, and the surface topography of portion of the surface is detected at least partially in response to the detected darkened regions. Other applications are also described.
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公开(公告)号：US09833139B1
公开(公告)日：2017-12-05
申请号：US15671413
申请日：2017-08-08
Applicant: ADOM, Advanced Optical Technologies Ltd
Inventor： Yoel Arieli , Yoel Cohen , Shlomi Epstein , Dror Arbel , Ra'anan Gefen
CPC classification number: A61B3/101 , A61B3/0025 , A61B3/1005 , A61B3/152 , G01B9/02021 , G01B9/02025 , G01B9/02027 , G01B9/02044 , G01B9/02087 , G01B9/0209 , G01B11/06 , G01B11/0625 , G01B11/0675 , G01B2290/45 , G01N21/274 , G01N2201/066 , G01N2201/127 , G02B3/08
Abstract: Apparatus and methods are described for performing structure measurement on a tear film of an eye of a subject. At least a portion of a surface of the tear film is illuminated using a broadband light source. A spectrum of light of the broadband light that is reflected from at least one point of the tear film is measured, using a spectrometer. Color information for a plurality of points of the tear film is obtained, by imaging a field of view of the tear film using a color camera. Using a processing unit, data from the color camera and data from the spectrometer that are indicative of characteristics of the tear film are received, and based upon a combination of the data received from the color camera and the data received from the spectrometer, an output is generated that is indicative of a structure of the tear film.
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