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公开(公告)号：US20250085665A1
公开(公告)日：2025-03-13
申请号：US18882206
申请日：2024-09-11
Applicant: Imec vzw
Inventor： Yuqian Li , Ziduo Lin , Murali Jayapala , Zhenxiang Luo , Vasileios Lemonidis
Abstract: Examples include imaging one or more objects contained inside a droplet. A method includes generating at least one hologram of the one or more objects contained in the droplet by using in-line lens-free imaging. The at least one hologram includes at least one artifact that is caused by the droplet and that affects the at least one characteristic of the one or more objects contained in the droplet. The method includes at least partially removing the at least one artifact or the cause of the at least one artifact. The method further includes generating an image, after or during removing the at least one artifact or the cause of the at least one artifact. The image includes the one or more objects. The method also comprises recognizing the at least one characteristic of the one or more objects based on the image.
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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
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.
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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
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.
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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
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.
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