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公开(公告)号：US11639893B2
公开(公告)日：2023-05-02
申请号：US17678714
申请日：2022-02-23
IPC分类号： G01N21/35 , G01N21/3563 , G01N21/39 , G01N33/483
摘要： A device for observing a biological sample is provided, including: a light source to emit a light beam at a wavelength between 1 μm and 20 μm; an image sensor including pixels defining a detection plane; a holder to hold the sample between the source and the sensor at a distance from the plane smaller than 1 mm, such that the source is configured to illuminate an area of the sample larger than 1 mm2, no image-forming optics are placed between the sample and the sensor, and the sensor is configured to acquire an image corresponding to an area of the sample larger than 1 mm2 and representative of an absorption of the beam by the sample at the wavelength; and a processor to determine a map of an amount of analyte in the sample, based on the image acquired by the sensor, the analyte absorbing light at the wavelength.
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公开(公告)号：US11085828B2
公开(公告)日：2021-08-10
申请号：US16765385
申请日：2018-11-19
发明人： Sebastien Becker
摘要： The invention concerns a detection device for detecting electromagnetic radiation, comprising a substrate, an array of thermal detectors, each thermal detector comprising a suspended absorbent membrane and a reflective layer. The detection device comprises at least one opaque vertical wall, arranged on the substrate and extending longitudinally between two adjacent thermal detectors, and produced from a material that is opaque to the electromagnetic radiation to be detected.
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公开(公告)号：US10337986B2
公开(公告)日：2019-07-02
申请号：US15279955
申请日：2016-09-29
IPC分类号： G01N21/27 , G01N21/31 , G01N21/61 , G01N21/3504
摘要： A method for optimizing values of n detection wavelengths of an optical gas sensor configured to detect n different gases is provided, including: a) calculating a value of a determinant of an absorptivity matrix ε whose coefficients represent spectral absorptivity of each of the n different gases at the n detection wavelengths, the calculating being repeated several times, each time modifying at least one of said n detection wavelengths so the values of said n detection wavelengths are comprised within a range of values for which the spectral absorptivity of at least one of the n different gases is non-zero; and b) determining the values of said n detection wavelengths for which the calculated value of the determinant of the absorptivity matrix ε corresponds to a maximum calculated value amongst a set of values calculated in step a).
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