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公开(公告)号：US20240027269A1
公开(公告)日：2024-01-25
申请号：US17989527
申请日：2022-11-17
Applicant: TSINGHUA UNIVERSITY , BEIJING SEETRUM TECHNOLOGY CO., LTD.
Inventor： Kaiyu CUI , Jiawei YANG , Yidong HUANG , Wei ZHANG , Xue FENG , Fang LIU
CPC classification number: G01J3/2823 , G06T1/20 , G06T5/002 , G06T7/70 , G01J2003/284 , G01J2003/2836 , G06T2200/04 , G01J2003/2826 , G06T2207/20084
Abstract: A reconstruction method for spectral image includes: obtaining a measurement image of an imaging object, and reconstructing and obtaining a spectral image of the imaging object according to the measurement image and a pre-calibrated sensing matrix. The spectral image includes spectral information at different position points of the imaging object. Through the method, defects of the time-consuming spectral image reconstruction method and the low resolution of the obtained spectral image in the related art can be overcame and the spectral image of the target imaging object can be obtained by reconstructing quickly and the obtained spectral image has high spatial resolution and no mosaic.
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2.发明公开公开(公告)号：US20230409792A1
公开(公告)日：2023-12-21
申请号：US18079706
申请日：2022-12-12
Applicant: TSINGHUA UNIVERSITY , BEIJING SEETRUM TECHNOLOGY CO., LTD.
Inventor： Kaiyu CUI , Hongbo ZHU , Yidong HUANG , Wei ZHANG , Xue FENG , Fang LIU
IPC: G06F30/337
CPC classification number: G06F30/337 , G06F2111/20
Abstract: A spectral chip structure design method includes: obtaining an application-specific spectral library, and determining a spectral principal component based on the application-specific spectral library; performing non-negative processing on the spectral principal component to obtain a non-negative spectral principal component; and determining transmission spectra of the spectral chip structure based on the non-negative spectral principal component. By summarizing spectral features of the application-specific spectral library through the spectral principal component, a quantitative evaluation for the spectral library is realized and then by designing the spectral chip structure on this basis, a targeted quantitative design on the application-specific spectral library can be realized and the accuracy of reconstructing spectra by the spectral chip can be improve
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公开(公告)号：US20230326946A1
公开(公告)日：2023-10-12
申请号：US18017829
申请日：2021-08-03
Applicant: TSINGHUA UNIVERSITY
Inventor： Kaiyu CUI , Jiawei YANG , Yidong HUANG , Wei ZHANG , Xue FENG , Fang LIU
IPC: H01L27/146
CPC classification number: H01L27/14632 , H01L27/14627 , H01L27/14636 , H01L27/14685 , H01L27/14687
Abstract: A miniature spectrum chip includes a CIS wafer and a light modulation layer. The light modulation layer includes a plurality of micro-nano structure units arranged on the surface of a photosensitive area of the CIS wafer. Each micro-nano structure unit include a plurality of micro-nano structure arrays. In each micro-nano structure unit, different micro-nano structure arrays are two-dimensional gratings formed of internal units of different shapes. In each micro-nano structure unit, internal units provided in different micro-nano structure arrays have different shapes, and each group of micro-nano structure arrays has different modulation effects on light of different wavelengths, such that the degree of freedom of “shape” is fully utilized to obtain rich modulation effects on incident light. The precision of spectral restoration is improved. By using two-dimensional grating structures based on internal units of different shapes, rich wide-spectrum modulation characteristics with regard to incident light are achieved.
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Patent Agency Ranking
4.发明申请公开(公告)号：US20230025329A1
公开(公告)日：2023-01-26
申请号：US17950568
申请日：2022-09-22
Applicant: TSINGHUA UNIVERSITY
Inventor： Kaiyu CUI , Xusheng CAI , Hongbo ZHU , Yidong HUANG , Wei ZHANG , Xue FENG , Fang LIU
IPC: H04B10/516 , H01L27/146
Abstract: An image collection chip, an object imaging recognition device and an object imaging recognition method are provided. The image collection chip comprises an optical modulation layer and an image sensing layer. The optical modulation layer is located on the image sensing layer. The optical modulation layer is provided with at least two modulation units and the image sensing layer is provided with sensing units corresponding to the at least two modulation units in a form of up and down. Each of the at least two modulation units is provided with at least one modulation subunit. Two or more modulation units among the at least two modulation units have different graphic structures, and the two or more modulation units having different graphic structures have different modulation roles on spectrum.
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5.发明申请公开(公告)号：US20220085891A1
公开(公告)日：2022-03-17
申请号：US16978137
申请日：2019-08-21
Applicant: TSINGHUA UNIVERSITY
Inventor： Kaiyu CUI , Xusheng CAI , Hongbo ZHU , Yidong HUANG , Wei ZHANG , Xue FENG , Fang LIU
IPC: H04B10/516 , H01L27/146
Abstract: An image collection chip, an object imaging recognition device and an object imaging recognition method are provided. In each set of the pixel confirmation modules of the chip, each modulation unit and each sensing unit are correspondingly provided up and down on the optical modulation layer and the image sensing layer respectively; each modulation unit is provided with at least one modulation subunit, and each of the modulation subunits is provided with several modulation holes penetrating into the optical modulation layer; and the respective modulation holes in a same modulation subunit are arranged into a two-dimensional graphic structure having a specific pattern.
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公开(公告)号：US20220178748A1
公开(公告)日：2022-06-09
申请号：US16978086
申请日：2019-08-21
Applicant: TSINGHUA UNIVERSITY
Inventor： Kaiyu CUI , Xusheng CAI , Hongbo ZHU , Yidong HUANG , Fang LIU , Wei ZHANG , Xue FENG
Abstract: An optical modulation micro-nano structure, a micro-integrated spectrometer and a spectrum modulation method are provided. The optical modulation micro-nano structure includes an optical modulation layer located on a photoelectric detection layer that can modulate incident light to form differential responses on the photoelectric detection layer, so as to obtain an original spectrum by reconstruction, thereby overcoming the defects that the existing spectrometers rely too much on precise optical components, which makes spectrometers bulky, heavy and expensive. The optical modulation layer includes a base plate and at least one modulation unit; the base plate is provided on the photoelectric detection layer, and each of the modulation units is located on the base plate; each modulation unit is provided with several modulation holes penetrating into the base plate, and respective modulation holes inside a same modulation unit are arranged into a two-dimensional graphic structure with a specific pattern.
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公开(公告)号：US20220061672A1
公开(公告)日：2022-03-03
申请号：US16978122
申请日：2019-08-21
Applicant: TSINGHUA UNIVERSITY
Inventor： Kaiyu CUI , Xusheng CAI , Hongbo ZHU , Yidong HUANG , Xue FENG , Fang LIU , Wei ZHANG
IPC: A61B5/00 , A61B5/145 , A61B5/1455
Abstract: A noninvasive glucometer and a blood glucose detection method are provided. The noninvasive glucometer includes a light source, a spectrometer and detecting space into which an object to be detected intervenes; the detecting space is connected with the light source and the spectrometer respectively, so that a spectrum emitted by the light source can generate incident light entering the spectrometer after passing through the object to be detected. The spectrometer includes: an optical modulation layer configured to perform light modulation on the incident light to obtain a modulated spectrum; a photoelectric detection layer located below the optical modulation layer, and configured to receive the modulated spectrum and provide differential responses with respect to the modulated spectrum; and a signal processing circuit layer located below the photoelectric detection layer and configured to reconstruct the differential responses to obtain an original spectrum.
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公开(公告)号：US20160018537A1
公开(公告)日：2016-01-21
申请号：US14800635
申请日：2015-07-15
Applicant: TSINGHUA UNIVERSITY , NUCTECH COMPANY LIMITED
Inventor： Lan ZHANG , Yulan LI , Yuanjing LI , Jianqiang FU , Yingshuai DU , Wei ZHANG , Xuming MA , Jun LI
Abstract: The present invention provides a method and apparatus for processing signals of a semiconductor detector, including: acquiring a relationship of a time difference between anode and cathode signals of the semiconductor detector with an anode signal amplitude; obtaining an optimal data screening interval according to the relationship of the time difference between anode and cathode signals of the semiconductor detector with the anode signal amplitude, wherein the optimal data screening interval is an interval where the time difference between the anode and cathode signals is greater than 50 ns; and screening and processing the collected data according to the optimal data screening interval when the semiconductor detector collects data. The present invention better overcomes the inherent crystal defects of the detector, reduces the effect of background noise, increases the energy resolution of the cadmium zinc telluride detector under room temperature, and improves the peak-to-compton ratio.
Abstract translation: 本发明提供了一种用于处理半导体检测器的信号的方法和装置，包括：用阳极信号振幅获取半导体检测器的阳极和阴极信号之间的时间差的关系; 根据半导体检测器的阳极和阴极信号的时间差与阳极信号幅度的关系获得最佳数据筛选间隔，其中最佳数据筛选间隔是阳极和阴极信号之间的时间差较大的间隔 超过50 ns; 并且当半导体检测器收集数据时，根据最佳数据筛选间隔筛选和处理收集的数据。 本发明更好地克服了检测器的固有晶体缺陷，降低了背景噪声的影响，提高了碲化锌碲化镉检测器在室温下的能量分辨率，提高了峰 - 峰比。
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