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公开(公告)号：US10883939B2
公开(公告)日：2021-01-05
申请号：US16442484
申请日：2019-06-15
Applicant: IMEC VZW
Inventor： Pol Van Dorpe , Niels Verellen
Abstract: An imaging apparatus comprises: (i) an illumination waveguide configured to propagate light by total internal reflection, wherein an evanescent field illuminates an object in close relation to the illumination waveguide; (ii) an array of light-sensitive areas arranged on a common substrate with the illumination waveguide for detecting light from the object; and (iii) a controller configured to control forming of an interference pattern in the illumination waveguide, wherein the interference pattern comprises at least one element of constructive interference for selectively illuminating a portion of the object, the at least one element having a dimension with a size in a range of 100 nm-10 μm; wherein the controller is configured to sequentially change the interference pattern in relation to the object such that different portions are illuminated and light from different portions is sequentially detected.
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公开(公告)号：US11555745B2
公开(公告)日：2023-01-17
申请号：US17224466
申请日：2021-04-07
Applicant: IMEC VZW , Katholieke Universiteit Leuven, KU LEUVEN R&D
Inventor： Niels Verellen , Dmitry Kouznetsov , Pol Van Dorpe
Abstract: Example embodiments relate to methods and devices for generating (quasi-) periodic interference patterns. One embodiment includes a method for generating an interference pattern using multi-beam interference of electromagnetic radiation. The method includes computing a set of grid points in a complex plane representing a grid with a desired symmetry. The method also includes selecting a radius of a virtual circle. Additionally, the method includes selecting a set of grid points in the complex plane that lies on the virtual circle centered around a virtual center point. Further, the method includes associating an argument of each grid point of the selected set of grid points in the complex plane with a propagation direction of plane waves or quasi plane waves or parallel wave fronts. In addition, the method includes obtaining the interference pattern that is a superposition of the plane waves or quasi plane waves or parallel wave fronts.
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公开(公告)号：US12066372B2
公开(公告)日：2024-08-20
申请号：US17544300
申请日：2021-12-07
Applicant: IMEC VZW
Inventor： Niels Verellen , Pol Van Dorpe
IPC: G01N15/1434 , G01N15/10
CPC classification number: G01N15/1434 , G01N2015/1006
Abstract: According to an aspect of the present inventive concept there is provided a light excitation and collection device for a micro-fluidic system, comprising:
a light source configured to generate excitation light;
a plurality of excitation waveguides, each associated with a flow channel of the micro-fluidic system;
wherein each excitation waveguide is configured to receive and redirect the excitation light towards the flow channel, such that the excitation light is elastically scattered by a sample in the flow channel forming forward and side scattered light; and
wherein the light excitation and collection device further comprises:
at least one forward scattered light collection point; and
at least one side scattered light collection point; and
wherein the forward scattered light collected for all excitation waveguides is detected by a first plurality of light sensitive areas and the side scattered light collected for all excitation waveguides is detected by a second plurality of light sensitive areas, the first and the second pluralities of light sensitive areas form different groups of light sensitive areas.-
公开(公告)号：US11262239B2
公开(公告)日：2022-03-01
申请号：US16715351
申请日：2019-12-16
Applicant: IMEC VZW
Inventor： Peter Peumans , Pol Van Dorpe , Niels Verellen
Abstract: The present disclosure relates to a spectral sensor for detection of individual light-emitting particles. The sensor is comprising an array of photo-sensitive detectors for detecting light emitted by said individual light-emitting particles and a filter array comprising a plurality of different band-stop filters. The filter array is configured to transmit wavelengths in a detectable wavelength region to the array of photo-sensitive detectors, and wherein each band-stop filter is associated with one or more particular photo-sensitive detectors, and the plurality of different band-stop filters are configured to reflect different wavelength intervals within said detectable wavelength region so that each photo-sensitive detector of the array is configured to detect the wavelengths of the detectable wavelength region other than the reflected wavelength interval of the band-stop filter being associated with the photo-sensitive detector. The sensor is further comprising a processing unit in communication with said array of photo-sensitive detectors and configured for determining a spectral characteristic of an individual light-emitting particle based on the response from said array of photo-sensitive detectors.
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公开(公告)号：US20190383743A1
公开(公告)日：2019-12-19
申请号：US16442484
申请日：2019-06-15
Applicant: IMEC VZW
Inventor： Pol Van Dorpe , Niels Verellen
Abstract: An imaging apparatus comprises: (i) an illumination waveguide configured to propagate light by total internal reflection, wherein an evanescent field illuminates an object in close relation to the illumination waveguide; an array of light-sensitive areas arranged on a common substrate with the illumination waveguide for detecting light from the object; and (iii) a controller configured to control forming of an interference pattern in the illumination waveguide, wherein the interference pattern comprises at least one element of constructive interference for selectively illuminating a portion of the object, the at least one element having a dimension with a size in a range of 100 nm-10 μm; wherein the controller is configured to sequentially change the interference pattern in relation to the object such that different portions are illuminated and light from different portions is sequentially detected.
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Patent Agency Ranking
公开(公告)号：US09927559B2
公开(公告)日：2018-03-27
申请号：US15467430
申请日：2017-03-23
Applicant: IMEC VZW , Katholieke Universiteit Leuven, KU LEUVEN R&D
Inventor： Jiaqi Li , Niels Verellen , Pol Van Dorpe , Dries Vercruysse
CPC classification number: G02B5/008 , B82Y20/00 , G02B5/0257 , G02B5/0284 , G02B6/1226 , G02B6/13 , G02B2207/101
Abstract: The disclosure relates to wavelength-controlled directivity of all-dielectric optical nanoantennas. One example embodiment is an optical nanoantenna for directionally scattering light in a visible or a near-infrared spectral range. The optical nanoantenna includes a substrate. The optical nanoantenna also includes an antenna structure disposed on the substrate. The antenna structure includes a dielectric material having a refractive index that is higher than a refractive index of the substrate and a refractive index of a surrounding medium. The antenna structure includes a structure having two distinct end portions. The antenna structure is asymmetric with respect to at least one mirror reflection in a plane that is orthogonal to a plane of the substrate.
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公开(公告)号：US20170276841A1
公开(公告)日：2017-09-28
申请号：US15467430
申请日：2017-03-23
Applicant: IMEC VZW , Katholieke Universiteit Leuven, KU LEUVEN R&D
Inventor： Jiaqi Li , Niels Verellen , Pol Van Dorpe , Dries Vercruysse
CPC classification number: G02B5/008 , B82Y20/00 , G02B5/0257 , G02B5/0284 , G02B6/1226 , G02B6/13 , G02B2207/101
Abstract: The disclosure relates to wavelength-controlled directivity of all-dielectric optical nano-antennas. One example embodiment is an optical nanoantenna for directionally scattering light in a visible or a near-infrared spectral range. The optical nanoantenna includes a substrate. The optical nanoantenna also includes an antenna structure disposed on the substrate. The antenna structure includes a dielectric material having a refractive index that is higher than a refractive index of the substrate and a refractive index of a surrounding medium. The antenna structure includes a structure having two distinct end portions. The antenna structure is asymmetric with respect to at least one mirror reflection in a plane that is orthogonal to a plane of the substrate.
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公开(公告)号：US12189109B2
公开(公告)日：2025-01-07
申请号：US18083830
申请日：2022-12-19
Applicant: IMEC VZW , KATHOLIEKE UNIVERSITEIT LEUVEN
Inventor： Dmitry Kouznetsov , Niels Verellen , Qingzhong Deng
Abstract: According to an aspect of the present inventive concept there is provided a light distribution device comprising a waveguide comprising a light coupling portion for light propagation, and a slab layer comprising a light coupling edge arranged at a boundary of the slab layer, configured for light propagation.
The light coupling portion extends alongside and at a distance from the light coupling edge, forming a gap therebetween.
The light distribution device is configured to allow light in the waveguide to be coupled into the slab layer across the gap.
The slab layer is configured to propagate light coupled into the slab layer such that an interference pattern is formed in the slab layer, and for control of the interference pattern.-
公开(公告)号：US11307133B2
公开(公告)日：2022-04-19
申请号：US16957101
申请日：2018-12-19
Applicant: IMEC VZW
Inventor： Chengxun Liu , Dries Vercruysse , Niels Verellen , Abdulkadir Yurt
Abstract: A device (110) for illuminating a particle comprises: a light waveguide (112; 412a, 412b; 512a, 512b) arranged on a substrate (114); an output coupler (118) configured to output a light beam (150; 450a, 450b; 550a, 550b) forming a sheet-like shape having a cross-section which has an extension in a first direction being larger than a size of a particle; and a fluidic channel (116; 416; 516) arranged on the substrate (114) for guiding a flow of particles along a longitudinal direction of the fluidic channel (116; 416; 516); wherein the sheet-like shape of the light beam (150; 450a, 450b; 550a, 550b) is arranged within the fluidic channel (116; 416; 516) and the first direction of the cross-section of the light beam (150; 450a, 450b; 550a, 550b) forms an angle to the longitudinal direction of the fluidic channel (116; 416; 516). A system (100) for imaging the particle comprises the device, an array (130; 430a, 430b; 530) of light-detecting elements (132; 432a, 432b; 532); and a lens (120) to converge light towards the array (130; 430a, 430b; 530) such that each light-detecting element (132; 432a, 432b; 532) detects light originating from a corresponding position in the fluidic channel (116; 416; 516).
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公开(公告)号：US20210325254A1
公开(公告)日：2021-10-21
申请号：US17224466
申请日：2021-04-07
Applicant: IMEC VZW , Katholieke Universiteit Leuven, KU LEUVEN R&D
Inventor： Niels Verellen , Dmitry Kouznetsov , Pol Van Dorpe
Abstract: Example embodiments relate to methods and devices for generating (quasi-) periodic interference patterns. One embodiment includes a method for generating an interference pattern using multi-beam interference of electromagnetic radiation. The method includes computing a set of grid points in a complex plane representing a grid with a desired symmetry. The method also includes selecting a radius of a virtual circle. Additionally, the method includes selecting a set of grid points in the complex plane that lies on the virtual circle centered around a virtual center point. Further, the method includes associating an argument of each grid point of the selected set of grid points in the complex plane with a propagation direction of plane waves or quasi plane waves or parallel wave fronts. In addition, the method includes obtaining the interference pattern that is a superposition of the plane waves or quasi plane waves or parallel wave fronts.
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