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1.
公开(公告)号:US20230375341A1
公开(公告)日:2023-11-23
申请号:US18362931
申请日:2023-07-31
Applicant: SHANGHAI RUIYU BIOTECH CO., LTD.
Inventor: Xiaojia ZHANG , Puwen LUO , Yifei WU
CPC classification number: G01C3/02 , G02B21/12 , G02B21/245
Abstract: A method for laser distance measuring includes: emitting an incident ray α having an incident angle δ to a reflective surface of a laser reflecting mirror (31), the incident ray α being reflected by the laser reflecting mirror (31) to generate a first reflected ray β, and the first reflected ray β irradiating an object to be measured (1000); capturing a second reflected ray θ and generating a laser image on a laser imaging plane (3221), the second reflected ray θ being generated by the reflective surface of the laser reflecting mirror (31) reflecting a return ray γ generated after the first reflected ray β irradiates a surface of the object to be measured; and determining, based on the laser image, a measurement distance A according to a geometrical trigonometry.
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2.
公开(公告)号:US20230359013A1
公开(公告)日:2023-11-09
申请号:US18132273
申请日:2023-04-07
Applicant: Molecular Devices, LLC
Inventor: Matthew Chan
CPC classification number: G02B21/245 , G02B7/09
Abstract: A method and system for autofocusing an objective lens in a microscope system are disclosed. A decentered aperture is disposed in an optical path between an objective lens and an image plane of an image capturing device and a plurality of reference images are captured. Each reference image is captured when the objective lens is positioned at a corresponding z-position of a plurality of z-positions along an axis of travel of the objective lens and the optical path is at least partially occluded by the decentered aperture. At least one reference image of the plurality of the reference images is associated with a best focus position. The plurality of reference images are analyzed to develop a plurality of pattern locations, wherein each pattern location represents a position of a pattern formed on the image plane when a corresponding reference image was captured. The objective lens is positioned in accordance with the best focus position and the plurality of pattern locations.
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3.
公开(公告)号:US20190196169A1
公开(公告)日:2019-06-27
申请号:US16223565
申请日:2018-12-18
Applicant: Leica Instruments (Singapore) Pte. Ltd.
Inventor: George THEMELIS
CPC classification number: G02B21/245 , A61B90/20 , A61B90/25 , A61B90/361 , A61B2034/2048 , A61B2034/2059 , A61B2034/2065 , A61B2090/364 , A61B2090/371 , A61B2090/506 , G02B21/0012 , G02B21/22 , G02B21/244 , G02B21/362 , G02B27/644 , G06K9/00134
Abstract: The invention relates to a method for observing an object (33) using a medical observation apparatus (1), such as a microscope (3), a non-transient computer readable storage medium (95) and a medical observation apparatus (1). Solutions of the art are expensive, bulky and prevents further usage of a microscope (3) is e.g. a robotic arm has a malfunction. The inventive method and medical observation apparatus (1) solves those problems by directing an optical assembly (7) to an object (33) located in a field of view (31), and by keeping the object (33) in focus when the optical assembly (7) is manually shifted, essentially perpendicularly to a viewing axis (17) of the optical assembly (7). The inventive apparatus (1) comprises an optical assembly (7) providing an optical viewing axis (17) and a lens adjustment assembly (29) which is configured to direct the optical assembly (7) to the object (33) in dependence on position data (65).
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公开(公告)号:US10078206B2
公开(公告)日:2018-09-18
申请号:US15087177
申请日:2016-03-31
Applicant: Carl Zeiss Microscopy GmbH
Inventor: Thomas Kalkbrenner , Michael Goelles
IPC: G02B21/36 , G02B21/00 , G01N21/64 , G02B21/18 , G02B17/02 , G02B21/16 , G02B27/10 , G02B27/14 , G02B27/58 , G02B7/38 , G02B21/24
CPC classification number: G02B21/361 , G01N21/6458 , G02B7/38 , G02B17/023 , G02B21/0032 , G02B21/0072 , G02B21/0076 , G02B21/0088 , G02B21/16 , G02B21/18 , G02B21/245 , G02B21/367 , G02B27/106 , G02B27/1066 , G02B27/141 , G02B27/144 , G02B27/145 , G02B27/58
Abstract: The invention relates to a microscope having an illumination beam path with wide field illumination of a sample and a first detection beam path having a spatially resolved surface receiver, which is reached by a first part of the detection light coming from the sample via the first detection beam path, or an image divider assembly for a microscope. In order to lengthen the optical path length, at least a second part of the detection light coming from the sample is masked out of the detection beam path and, via deflection means belonging to the detection beam path, is led into a second detection beam path and, preferably via further deflection means, is deflected back in the direction of the detection in such a way that detection light is applied to at least two partial regions beside one another on the surface receiver. At least the second part of the detection light runs in an optical element having an optical density that is increased as compared with the first detection beam path, in order to lengthen the optical path length, and the optical element is designed to be displaceable at an angle, preferably perpendicular, to the optical axis of the first detection beam path in order to adjust the optical path length, and has flat surfaces, at least on the light entry and light exit side thereof; a prism is provided, preferably a glass prism, preferably at least in the second detection beam path after a first beam deflection, for deflection in a direction parallel to the first detection beam path, in order to increase the path length and for reverse deflection.
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公开(公告)号:US10061108B2
公开(公告)日:2018-08-28
申请号:US13697681
申请日:2011-05-04
Applicant: Bas Hulsken , Sjoerd Stallinga
Inventor: Bas Hulsken , Sjoerd Stallinga
CPC classification number: G02B21/245 , G02B21/36 , H04N3/1581 , H04N5/2258 , H04N5/23212
Abstract: The present invention relates to the field of digital pathology and in particular to whole slide scanners. Autofocus imaging can be performed by sampling a first number of pixels of a primary image sensor and sampling a second number of pixels of an autofocus image sensor, wherein the second number is between one quarter and three quarters of the first number. Thus, continuous autofocus for rapid light scanning may be provided based on an additional image sensor that is tilted with respect to the optical axis.
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公开(公告)号:US20180191948A1
公开(公告)日:2018-07-05
申请号:US15860229
申请日:2018-01-02
Applicant: University of Connecticut
Inventor: Guoan Zheng
CPC classification number: H04N5/23212 , G02B7/365 , G02B21/02 , G02B21/06 , G02B21/244 , G02B21/245 , G02B21/361 , G02B21/362 , G02B21/365 , G06N3/04 , G06N3/0454 , G06N3/08 , G06T3/20 , G06T7/70 , G06T2207/10048 , G06T2207/10056 , G06T2207/20081 , H04N5/2253 , H04N5/2256 , H04N5/33
Abstract: Instruments, assemblies and methods are provided for undertaking imaging techniques (e.g., microscopic imaging techniques). The present disclosure provides improved imaging techniques, equipment and systems. More particularly, the present disclosure provides advantageous microscopy/imaging assemblies with single-frame sample autofocusing using multi-LED illumination. The present disclosure provides for assemblies and methods for single-frame rapid sample autofocusing without a z-scan. Potential applications for the disclosed assemblies/methods include, without limitation, whole slide imaging, optical metrology, wafer inspection, DNA sequencing and other high-throughput imaging applications where the sample may need to be scanned over a large field of view. The assemblies/methods advantageously utilize multiple LEDs for sample illumination. A captured image includes multiple copies of the sample, and one can recover the distance between these copies. The distance is directly related to the defocus distance.
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公开(公告)号:US20180188517A1
公开(公告)日:2018-07-05
申请号:US15858487
申请日:2017-12-29
Applicant: Leica Biosystems Imaging, Inc.
Inventor: Yunlu ZOU , Nicholas NEWBERG , Gregory CRANDALL
CPC classification number: G02B21/361 , G02B21/002 , G02B21/245 , G02B21/26 , G02B21/34 , G02B21/365 , G06T2207/10056
Abstract: A digital pathology imaging apparatus includes a single line scan camera sensor optically coupled with first and second optical paths. In a first embodiment, transmission mode illumination and oblique mode illumination are simultaneously used during a single stage movement that captures a low resolution macro image of the entire sample area and the entire label area of the slide via the first optical path. In a second embodiment, transmission mode illumination is used during a first stage movement that captures a low resolution macro image of at least the entire sample area via the first optical path and oblique mode illumination is used during a second stage movement that captures a low resolution macro image of at least the entire label area via the first optical path.
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公开(公告)号:US09989749B2
公开(公告)日:2018-06-05
申请号:US15680962
申请日:2017-08-18
Applicant: Thorlabs, Inc.
Inventor: Alex Cable , Jörn Wollenzin , Ross Johnstone , Kirk Gossage , Jeffrey S. Brooker , Jason Mills , James Jiang , Dierck Hillmann
CPC classification number: G02B21/245 , G01B9/02059 , G01B9/02063 , G01B9/02077 , G01B9/0209 , G02B7/28 , G02B21/0004 , G02B21/26
Abstract: Disclosed are several technical approaches of using low coherence interferometry techniques to create an autofocus apparatus for optical microscopy. These approaches allow automatic focusing on thin structures that are positioned closely to reflective surfaces and behind refractive material like a cover slip, and automated adjustment of focus position into the sample region without disturbance from reflection off adjacent surfaces. The measurement offset induced by refraction of material that covers the sample is compensated for. Proposed are techniques of an instrument that allows the automatic interchange of imaging objectives in a low coherence interferometry autofocus system, which is of major interest in combination with TDI (time delay integration) imaging, confocal and two-photon fluorescence microscopy.
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公开(公告)号:US20180135119A1
公开(公告)日:2018-05-17
申请号:US15611917
申请日:2017-06-02
Applicant: Direct Genomics Co., Ltd.
Inventor: Qin YAN , Zefei JIANG , Jiao ZHENG , Ping WU , Zhiliang ZHOU , Liangjin GE
CPC classification number: C12Q1/6869 , B01L3/502 , B01L9/50 , B01L2200/025 , B01L2200/10 , B01L2300/0609 , B01L2300/0654 , B01L2300/0672 , B01L2300/18 , C12M1/34 , G01N21/6428 , G01N21/6458 , G01N2021/6471 , G01N2201/06113 , G01N2201/068 , G02B21/06 , G02B21/16 , G02B21/245 , C12Q2565/601
Abstract: A nucleic acid sequencing system is provided, including a base provided with a clamping platform, a reagent storage unit, a fluid control unit, a mobile platform and a total reflection microscope thereon; the clamping platform being provided with a gene sequencing chip thereon; the reagent storage unit being configured to store a gene sequencing reagent, the fluid control unit being configured to pump the gene sequencing reagent from the reagent storage unit to the gene sequencing chip, the mobile platform being configured to drive the clamping platform to move toward or away from the total reflection microscope; and the total reflection microscope being configured to detect a gene sequence of a sample in the gene sequencing chip.
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公开(公告)号:US09921399B2
公开(公告)日:2018-03-20
申请号:US14675199
申请日:2015-03-31
Applicant: General Electric Company
Inventor: Jeremy Cooper
CPC classification number: G02B21/245 , G02B7/38 , G02B21/02 , G02B21/06 , G02B27/106 , G02B27/145 , G02B27/148
Abstract: Embodiments of the present invention are directed to autofocus subsystems within optical instruments that continuously monitor the focus of the optical instruments and adjust distances within the optical instrument along the optical axis in order to maintain a precise and stable optical-instrument focus at a particular point or surface on, within, or near a sample. Certain embodiments of the present invention operate asynchronously with respect to operation of other components and subsystems of the optical instrument in which they are embedded. In one embodiment the autofocus detector comprises a beam splitter arranged to split the autofocus light beam into a plurality (n) of down-stream light beams and a photodetector arrangement for registering the intensity of each one of the down-stream light beams.
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