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1. 发明申请

US20230130348A1 HOLOGRAPHIC MICROSCOPE AND USING METHOD THEREOF 有权
公开(公告)号：US20230130348A1
公开(公告)日：2023-04-27
申请号：US17580612
申请日：2022-01-20
申请人： Industrial Technology Research Institute
发明人： Wei-Kang Chang
IPC分类号： G03H1/04 , G03H1/00
摘要： A holographic microscope configured to observe a sample is provided. The holographic microscope includes a light source, a light splitting element, a polarizing element, a phase modulation element, a light combining element, and a photosensitive element. The light source is configured to provide an illumination beam. The illuminating beam is transmitted through the light splitting element to form a first light beam and a second light beam, and the sample is disposed on a transmission path of the first light beam. The polarizing element and the phase modulation element are disposed on the transmission path of the first light beam or the second light beam. The first light beam and the second light beam are transmitted to the light combining element to form an interference beam. The photosensitive element is disposed on a transmission path of the interference beam to receive the interference beam to generate an optical signal.

2. 发明申请

US20230118706A1 METHOD FOR PRODUCING MICRO-OPTICS ON SURFACE-EMITTING LASER DIODES (VCSEL) 有权
公开(公告)号：US20230118706A1
公开(公告)日：2023-04-20
申请号：US17935892
申请日：2022-09-27
申请人： Robert Bosch GmbH
发明人： Johannes Meyer , Johannes Hofmann , Tobias Wilm
IPC分类号： H01S5/183 , H01S5/42 , G03H1/04
摘要： A method for producing micro-optics on surface-emitting laser diodes. In a wafer-level operation, the micro-optics are preferably positioned directly on the VCSEL's forming, in each instance, a part of a coherent wafer.

3. 发明授权

US11609537B2 Cell analysis method and cell analysis system using a holographic microscope 有权
公开(公告)号：US11609537B2
公开(公告)日：2023-03-21
申请号：US16490123
申请日：2017-03-02
申请人： SHIMADZU CORPORATION , iPS PORTAL, Inc.
发明人： Yasushi Kondo , Shuhei Yamamoto , Mika Okada , Minoru Okada
IPC分类号： G03H1/04 , C12M1/34 , G02B21/36 , G03H1/08 , G01N15/02 , G02B21/00 , G03H1/00 , G01N15/00
摘要： A cell area extraction unit (241) extracts a cell area in a phase image that is created based on a hologram obtained by in-line holographic microscope (IHM). A background value acquisition unit (242) obtains a background value from phase values at a plurality of positions outside the cell area. An intracellular phase value acquisition unit (243) averages a plurality of phase values on a sampling line set at a position close to the periphery of a cell, while avoiding a central portion in which the phase value may be lowered in the cell area, to obtain an intracellular phase value. A phase change amount calculation unit (244) obtains the difference between the intracellular phase value and the background value. A phase change amount determination unit (245) compares the value of the difference with thresholds in two levels to determine whether the cell is in an undifferentiated state or an undifferentiation deviant state. It is thereby possible to automatically make a correct determination while removing the influence of a theoretical measurement error by IHM.

4. 发明授权

US11609172B2 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
申请人： IMEC VZW
发明人： Richard Stahl , Abdulkadir Yurt , Ziduo Lin , Geert Vanmeerbeeck , Andy Lambrechts
IPC分类号： G01N15/02 , G03H1/08 , G03H1/04
摘要： 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.

5. 发明授权

US11561507B2 Methods for three-dimensional arrangement of anisotropic molecules, patterned anisotropic films, and optical elements therewith 有权
公开(公告)号：US11561507B2
公开(公告)日：2023-01-24
申请号：US16273068
申请日：2019-02-11
申请人： META PLATFORMS TECHNOLOGIES, LLC
发明人： Oleg Yaroshchuk , Wai Sze Tiffany Lam , Scott Charles McEldowney , Lu Lu
IPC分类号： G03H1/02 , G03H1/04 , G03H1/18
摘要： The invention relates to a method of creation of three-dimensional alignment patterns that includes providing a layer of optically recordable and polarization sensitive material having a thickness that is greater than, or equal to, a predefined thickness, and concurrently illuminating the optically recordable medium with two coherent beam of same or different polarization with predetermined angle between the beams such that the said beams impinge from the same side or from the opposite sides upon the layer of the recordable material. The invention further relates to polarization volume holograms based on the said alignment patterns and polarization holographic element including a single layer or a stack of several layers of optically recordable materials containing single or multiple polarization volume holograms.

6. 发明申请

US20220404766A1 HOLOGRAPHIC STORAGE OPTICAL SYSTEM AND BEAM CALIBRATING METHOD THEREOF 有权
公开(公告)号：US20220404766A1
公开(公告)日：2022-12-22
申请号：US17843795
申请日：2022-06-17
申请人： Amethystum Storage Technology Co., Ltd.
发明人： Dejiao HU , Yicheng LIU , Jun TIAN
IPC分类号： G03H1/00 , G03H1/04 , G03H1/22 , G11B7/0065 , G11B7/24
摘要： A holographic storage optical system includes a storage medium, a recording unit, an imaging unit and a servo unit. The recording unit comprises a movable Fourier lens, by which the positions and irradiation angles of a signal light spot and a reference light spot are adjusted. The servo unit comprises a calibration lens for adjusting the positions of a servo light spot in the horizontal and vertical directions so that the servo light spot is located at an optimal position relative to signal light beam and reference light beam. The beam calibrating method comprises (1) before recording a data hologram, burning a calibration hologram at a calibration holographic positioning mark on an optical track of a storage medium; (2) before reproducing the data hologram, using the calibration hologram to optimize the signal-to-noise ratio of the hologram reproduced by adjusting the calibration lens and the Fourier lens.

7. 发明申请

US20220349699A1 Surface Shape Measurement Device and Surface Shape Measurement Method 有权
公开(公告)号：US20220349699A1
公开(公告)日：2022-11-03
申请号：US17272426
申请日：2019-08-29
申请人： University of Hyogo
发明人： Kunihiro SATO
IPC分类号： G01B9/02015 , G01B9/02 , G03H1/04
摘要： The present invention provides a surface shape measuring device and a surface shape measuring method which do not require a physical reference plane and can improve measurement accuracy without using a mechanical adjustment mechanism. The illumination light condensing point PQ and the reference light condensing point PL are arranged as mirror images of each other with respect to the virtual plane VP, and each data of the object light O, being a reflected light of the spherical wave illumination light Q, and the inline spherical wave reference light L is recorded on each hologram. On the virtual plane VP, the reconstructed object light hologram hV for measurement is generated, and the spherical wave optical hologram sV representing a spherical wave light emitted from the reference light condensing point PL is analytically generated. The height distribution of the surface to be measured of the object 4 is obtained from the phase distribution obtained by dividing the reconstructed object light hologram hV by the spherical wave light hologram sV. High-accuracy surface shape measurement without requiring a reference plane such as a glass substrate is realized by comparing the phase data of the reflected light acquired from the surface to be measured and the phase distribution on the plane cut surface of the spherical wave obtained analytically.

8. 发明授权

US11480917B2 Method and apparatus for reconstructing three-dimensional image by using diffraction grating 有权
$Method and apparatus for reconstructing three-dimensional image by using diffraction grating$
公开(公告)号：US11480917B2
公开(公告)日：2022-10-25
申请号：US17104107
申请日：2020-11-25
申请人： SANGMYUNG UNIVERSITY INDUSTRY—ACADEMY COOPERATION FOUNDATION
发明人： Hoon Yoo , Jae Young Jang
IPC分类号： G03H1/08 , G03H1/04
摘要： A method of reconstructing a three-dimensional (3-D) image on the basis of a diffraction grating includes extracting parallax images from a raw image of an object photographed by using a diffraction grating and reconstructing a 3-D image from the extracted parallax image array by using a virtual pinhole model.

9. 发明申请

US20220283376A1 Evacuated Periodic Structures and Methods of Manufacturing 有权
公开(公告)号：US20220283376A1
公开(公告)日：2022-09-08
申请号：US17653818
申请日：2022-03-07
申请人： DigiLens Inc.
发明人： Jonathan David Waldern , Alastair John Grant , Milan Momcilo Popovich , Shibu Abraham , Baeddan George Hill , Tsung-Jui Ho , Michiel Koen Callens , Hyesog Lee
IPC分类号： G02B6/34 , G02B5/18 , G02B5/32 , G03H1/02 , G03H1/04 , H01L51/52
摘要： Improvements to gratings for use in waveguides and methods of producing them are described herein. Deep surface relief gratings (SRGs) may offer many advantages over conventional SRGs, an important one being a higher S-diffraction efficiency. In one embodiment, deep SRGs can be implemented as polymer surface relief gratings or evacuated periodic structures (EPSs). EPSs can be formed by first recording a holographic polymer dispersed liquid crystal (HPDLC) periodic structure. Removing the liquid crystal from the cured periodic structure provides a polymer surface relief grating. Polymer surface relief gratings have many applications including for use in waveguide-based displays.

10. 发明申请

US20220269218A1 REAL TIME HOLOGRAPHY USING LEARNED ERROR FEEDBACK 有权
公开(公告)号：US20220269218A1
公开(公告)日：2022-08-25
申请号：US17740946
申请日：2022-05-10
申请人： Intel Corporation
发明人： Alexey Supikov , Qiong Huang , Ronald T. Azuma
IPC分类号： G03H1/08 , G03H1/04 , G06T1/20 , G06N3/02 , G06N3/067 , G06T7/66 , G06T7/00 , G06T9/00 , G06T19/00
摘要： Techniques related to generating holographic images are discussed. Such techniques include application of a machine learning model to the target image to generate data that is used to enable the determination of a phase pattern via an iterative propagation feedback model. The iterative propagation feedback model is used to generate a feedback strength value, which is then used to generate a phase diffraction pattern for presentation at a holographic plane.

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