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    Apparatus and Method for Performing In-Line Lens-Free Digital Holography of an Object
    12.
    发明申请
    Apparatus and Method for Performing In-Line Lens-Free Digital Holography of an Object 有权
    用于执行对象的在线无镜头数字全息摄影的装置和方法

    公开(公告)号：US20170031318A1

    公开(公告)日：2017-02-02

    申请号：US15039549

    申请日：2014-12-02

    Applicant: IMEC VZW

    Inventor： Richard Stahl ,  Murali Jayapala ,  Andy Lambrechts ,  Geert Vanmeerbeeck

    IPC: G03H1/04 ,  H04N5/33 ,  H04N9/04

    CPC classification number: G03H1/0443 ,  G01N15/1429 ,  G01N15/1434 ,  G01N15/147 ,  G01N2015/1454 ,  G03H1/0404 ,  G03H1/0465 ,  G03H1/0486 ,  G03H1/0493 ,  G03H1/0866 ,  G03H2001/0212 ,  G03H2001/0428 ,  G03H2001/0447 ,  G03H2001/0452 ,  G03H2001/0497 ,  G03H2001/266 ,  G03H2210/12 ,  G03H2210/13 ,  G03H2222/14 ,  G03H2226/11 ,  G03H2240/62 ,  H04N5/332 ,  H04N9/045

    Abstract: The present disclosure relates to apparatuses and methods for performing in-line lens-free digital holography of objects. At least one embodiment relates to an apparatus for performing in-line lens-free digital holography of an object. The apparatus includes a point light source adapted for emitting coherent light. The apparatus also includes an image sensing device adapted and arranged for recording interference patterns resulting from interference from light waves directly originating from the point light source and object light waves. The object light waves originate from light waves from the point light source that are scattered or reflected by the object. The image sensing device comprises a plurality of pixels. The point light source comprises a broad wavelength spectrum light source and a pinhole structure. The image sensing device comprises a respective narrow band wavelength filter positioned above each pixel that filters within a broad wavelength spectrum of the point light source.

    Abstract translation: 本公开涉及用于执行物体的无线透镜数字全息术的装置和方法。 至少一个实施例涉及一种用于执行物体的直线无镜头数字全息术的装置。 该装置包括适于发射相干光的点光源。 该装置还包括适于和布置用于记录由直接源自点光源和物体光波的光波的干扰引起的干涉图案的图像感测装置。 物体光波源自被物体散射或反射的点光源的光波。 图像感测装置包括多个像素。 点光源包括宽波长光谱光源和针孔结构。 图像感测装置包括位于每个像素上方的相应的窄带波长滤波器，其在点光源的宽波长光谱内进行滤波。

    Device and system for detecting particles in air
    13.
    发明授权
    Device and system for detecting particles in air 有权

    公开(公告)号：US11609172B2

    公开(公告)日：2023-03-21

    申请号：US17128093

    申请日：2020-12-19

    Applicant: IMEC VZW

    Inventor： Richard Stahl ,  Abdulkadir Yurt ,  Ziduo Lin ,  Geert Vanmeerbeeck ,  Andy Lambrechts

    IPC: G01N15/02 ,  G03H1/08 ,  G03H1/04

    Abstract: A device for detecting particles in air; said device comprising: a flow channel configured to allow a flow of air comprising particles through the flow channel; a light source configured to illuminate the particles, such that an interference pattern is formed by interference between light being scattered by the particles and non-scattered light from the light source; an image sensor configured to detect incident light, detect the interference pattern, and to acquire a time-sequence of image frames, each image frame comprising a plurality of pixels, each pixel representing a detected intensity of light; and a frame processor configured to filter information in the time-sequence of image frames, wherein said filtering comprises: identifying pixels of interest in the time-sequence of image frames, said pixels of interest picturing an interference pattern potentially representing a particle in the flow of air, and outputting said identified pixels of interest for performing digital holographic reconstruction.

    Method and an imaging system for holographic imaging
    14.
    发明授权
    Method and an imaging system for holographic imaging 有权

    公开(公告)号：US11175625B2

    公开(公告)日：2021-11-16

    申请号：US16467612

    申请日：2017-12-08

    Applicant: IMEC VZW

    Inventor： Ziduo Lin ,  Abdulkadir Yurt ,  Richard Stahl ,  Geert Vanmeerbeeck

    IPC: G03H1/04 ,  G03H1/00 ,  G03H1/02

    Abstract: Example embodiments relate to methods and imaging systems for holographic imaging. One embodiment includes a method for holographic imaging of an object. The method includes driving a laser using a current which is below a threshold current of the laser. The method also includes illuminating the object using illumination light output by the laser. Further, the method includes detecting an interference pattern formed by object light, having interacted with the object, and reference light of the illumination light.

    Apparatus and method for in-line holographic imaging
    15.
    发明授权
    Apparatus and method for in-line holographic imaging 有权

    公开(公告)号：US10684589B2

    公开(公告)日：2020-06-16

    申请号：US15847521

    申请日：2017-12-19

    Applicant: IMEC vzw

    Inventor： Abdulkadir Yurt ,  Geert Vanmeerbeeck ,  Richard Stahl ,  Ziduo Lin

    IPC: G03H1/02 ,  G03H1/00 ,  G03H1/04 ,  G03H1/12

    Abstract: An apparatus for in-line holographic imaging is disclosed. In one aspect, the apparatus includes at least a first light source and a second light source arranged for illuminating an object arranged in the apparatus with a light beam. The apparatus also includes an image sensor arranged to detect at least a first and a second interference pattern, wherein the first interference pattern is formed when the object is illuminated by the first light source and the second interference pattern is formed when the object is illuminated by the second light source. The first and second interference patterns are formed by diffracted light, being scattered by the object, and undiffracted light of the light beam. The at least first and second light sources are arranged at different angles in relation to the object, and possibly illuminate the object using different wavelengths.

    Holographic imaging device and method
    17.
    发明授权
    Holographic imaging device and method 有权

    公开(公告)号：US11487243B2

    公开(公告)日：2022-11-01

    申请号：US17033123

    申请日：2020-09-25

    Applicant: IMEC vzw

    Inventor： Richard Stahl ,  Abdulkadir Yurt

    IPC: G03H1/04 ,  G06T7/586 ,  G06T5/00 ,  G06T7/00 ,  H04N5/225

    Abstract: A holographic imaging device is disclosed. In one aspect, the holographic imaging device comprises an imaging unit comprising at least two light sources, wherein the imaging unit is configured to illuminate an object by emitting at least two light beams with the at least two light sources. A first and second light beams have different wave-vectors and wavelengths. The holographic imaging device further comprises a processing unit configured to obtain at least two holograms of the object by controlling the imaging unit to sequentially illuminate the object with respectively the first light beam and the second light beam, construct at least two 2D image slices based on the at least two holograms, wherein each 2D image slice is constructed at a determined depth within the object volume, and generate a three-dimensional image of the object based on a combination of the 2D image slices.

    HOLOGRAPHIC IMAGING DEVICE AND METHOD
    18.
    发明申请
    HOLOGRAPHIC IMAGING DEVICE AND METHOD 有权

    公开(公告)号：US20210116863A1

    公开(公告)日：2021-04-22

    申请号：US17033123

    申请日：2020-09-25

    Applicant: IMEC vzw

    Inventor： Richard Stahl ,  Abdulkadir Yurt

    IPC: G03H1/04 ,  H04N5/225 ,  G06T5/00 ,  G06T7/00 ,  G06T7/586

    Abstract: A holographic imaging device is disclosed. In one aspect, the holographic imaging device comprises an imaging unit comprising at least two light sources, wherein the imaging unit is configured to illuminate an object by emitting at least two light beams with the at least two light sources. A first and second light beams have different wave-vectors and wavelengths. The holographic imaging device further comprises a processing unit configured to obtain at least two holograms of the object by controlling the imaging unit to sequentially illuminate the object with respectively the first light beam and the second light beam, construct at least two 2D image slices based on the at least two holograms, wherein each 2D image slice is constructed at a determined depth within the object volume, and generate a three-dimensional image of the object based on a combination of the 2D image slices.

    Device, a system and a method in holographic imaging
    19.
    发明授权
    Device, a system and a method in holographic imaging 有权

    公开(公告)号：US10859976B2

    公开(公告)日：2020-12-08

    申请号：US15936489

    申请日：2018-03-27

    Applicant: IMEC VZW

    Inventor： Ziduo Lin ,  Richard Stahl ,  Abdulkadir Yurt

    IPC: G03H1/02 ,  G02B27/09 ,  G03H1/04 ,  G02B30/00 ,  G03H1/26

    Abstract: A device in holographic imaging comprises: at least two light sources, wherein each of the at least two light sources is arranged to output light of a unique wavelength; and at least one holographic optical element, wherein the at least two light sources and the at least one holographic optical element are arranged in relation to each other such that light from the at least two light sources incident on the at least one holographic optical element interacts with the at least one holographic optical element to form wavefronts of similar shape for light from the different light sources.

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