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公开(公告)号：US09770196B2
公开(公告)日：2017-09-26
申请号：US14091645
申请日：2013-11-27
Applicant: UNIVERSITEIT GENT
Inventor： Roeland Baets , Eva Ryckeboer
CPC classification number: A61B5/14532 , A61B5/14503 , A61B5/1459 , A61B5/150022 , A61B5/157 , A61B2562/04 , B01L3/5027 , G01N21/03 , G01N21/274 , G01N2201/0662
Abstract: A sensing system and method for sensing a component in a liquid is disclosed. The system comprises a microfluidic channel, the microfluidic channel comprising a first end and a second end, wherein the microfluidic channel is open at the first end and closed at the second end. The system also comprises at least one measurement sensor positioned adjacent the first end, the measurement sensor being arranged for detecting a measurement signal and a reference sensor positioned in the microfluidic channel adjacent the second end, the reference sensor being arranged for detecting a reference signal of the liquid. The system further is configured for combining the measurement signal and the reference signal so as to filter out background influences.
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公开(公告)号：US20190271854A1
公开(公告)日：2019-09-05
申请号：US16290041
申请日：2019-03-01
Applicant: IMEC VZW , Universiteit Gent
Inventor： YanLu Li , Roeland Baets , Eva Ryckeboer , Jinghao Zhu
Abstract: Described herein is a method and system for mitigating the effects of speckle in a laser Doppler system, and, in particular in a laser Doppler vibrometry/velocimetry system. A scan unit is provided in at least one of: a transmit path for scanning at least one beam from a transmitting antenna over a moving target surface and a receive path for scanning at least one reflected beam received from the moving target surface onto a receiving antenna. An averaging unit is provided prior to post-processing or demodulation to average electrical signals corresponding to the reflected beams. By averaging before demodulation, speckle in the output signal is mitigated.
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公开(公告)号：US11360262B2
公开(公告)日：2022-06-14
申请号：US16958476
申请日：2018-12-31
Applicant: UNIVERSITEIT GENT , IMEC VZW
Inventor： Roeland Baets , Eva Ryckeboer , Abdul Rahim , Anton Vasiliev , Xiaomin Nie
Abstract: An integrated wavelength-selective filter device comprises a first optical element, for directing received radiation into a direction defined by a first angle, and a second optical element being a diffractive element configured for diffracting the directed radiation under a second angle. The second angle is such that for a single reference wavelength the diffracted radiation is directed into a propagation medium for advancing therein towards a predetermined position on the first optical element or on a further optical element for filtering radiation having a wavelength substantially matching the reference wavelength from radiation having a substantially different wavelength. The propagation medium is formed from a material that is different from any material of the substrate of the first and the second optical element.
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公开(公告)号：US10684114B2
公开(公告)日：2020-06-16
申请号：US16290041
申请日：2019-03-01
Applicant: IMEC VZW , Universiteit Gent
Inventor： YanLu Li , Roeland Baets , Eva Ryckeboer , Jinghao Zhu
Abstract: Described herein is a method and system for mitigating the effects of speckle in a laser Doppler system, and, in particular in a laser Doppler vibrometry/velocimetry system. A scan unit is provided in at least one of: a transmit path for scanning at least one beam from a transmitting antenna over a moving target surface and a receive path for scanning at least one reflected beam received from the moving target surface onto a receiving antenna. An averaging unit is provided prior to post-processing or demodulation to average electrical signals corresponding to the reflected beams. By averaging before demodulation, speckle in the output signal is mitigated.
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