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公开(公告)号：US20240302718A1
公开(公告)日：2024-09-12
申请号：US18601822
申请日：2024-03-11
Applicant: COGNEX CORPORATION
Inventor： José Fernández Dorado , Pablo Garcia Campos , Martijn Visser , Andreas Weber , Laurens Nunnink , Fabio Fioravanti
IPC: G03B15/05
CPC classification number: G03B15/05
Abstract: An illumination assembly for a machine vision system includes a housing comprising a first shelf defining a first position within the housing and a second shelf defining a second position within the housing. a circuit board disposed within the housing, a plurality of light sources disposed within the housing and configured to be coupled to the circuit board, and a plurality of illumination optics assemblies disposed within the housing and removably coupled to the housing. Each illumination optics assembly corresponds to one of the plurality of light sources. The housing is configured to support the circuit board at one of the first position or the second position within the housing based on an illumination optics assembly type of the plurality of illumination optics assemblies.
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公开(公告)号：US11921350B2
公开(公告)日：2024-03-05
申请号：US17844481
申请日：2022-06-20
Applicant: Cognex Corporation
Inventor： Laurens Nunnink , Rene Delasauce , Nicole Dippel , Andreas Weber
IPC: G02B7/14 , G02B3/14 , G02B7/02 , G02B26/00 , G03B17/02 , G03B17/14 , H04N23/50 , H04N23/51 , H04N23/54
CPC classification number: G02B7/14 , G02B3/14 , G02B7/022 , G02B26/005 , G03B17/02 , G03B17/14 , H04N23/50 , H04N23/51 , H04N23/54
Abstract: This invention provides a vision system having a housing and an interchangeable lens module is provided. The module is adapted to seat on a C-mount ring provided on the front, mounting face of the housing. The module is attached via a plurality of fasteners that pass through a frame of the module and into the mounting face. The module includes a connector in a fixed location, which mates with a connector well on the mounting face to provide power and control to a driver board that operates a variable (e.g. liquid) lens within the optics of the lens module. The driver board is connected to the lens body by a flexible printed circuit board (PCB), which also allows for axial motion of the lens body with respect to the frame. This axial motion can be effected by an adjustment ring that can include an indexed/lockable, geared, outer surface.
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公开(公告)号：US20230194710A1
公开(公告)日：2023-06-22
申请号：US17892943
申请日：2022-08-22
Applicant: Cognex Corporation
Inventor： Andreas Weber , Laurens Nunnink , Rene Delasauce , William Equitz
IPC: G01S17/10 , G01S7/486 , G02B7/04 , G01S17/36 , G02B7/08 , G02B7/40 , G01S17/86 , H04N23/54 , H04N23/55 , H04N23/67
CPC classification number: G01S17/10 , G01S7/486 , G02B7/04 , G01S17/36 , G02B7/08 , G02B7/40 , G01S17/86 , H04N23/54 , H04N23/55 , H04N23/67 , H04N23/671
Abstract: This invention provides an integrated time-of-flight sensor that delivers distance information to a processor associated with the camera assembly and vison system. The distance is processed with the above-described feedback control, to auto-focus the camera assembly's variable lens during runtime operation based on the particular size/shape object(s) within the field of view. The shortest measured distance is used to set the focus distance of the lens. To correct for calibration or drift errors, a further image-based focus optimization can occur around the measured distance and/or based on the measured temperature. The distance information generated by the time-of-flight sensor can be employed to perform other functions. Other functions include self-triggering of image acquisition, object size dimensioning, detection and analysis of object defects and/or gap detection between objects in the field of view and software-controlled range detection to prevent unintentional reading of (e.g.) IDs on objects outside a defined range (presentation mode).
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公开(公告)号：US20230076572A1
公开(公告)日：2023-03-09
申请号：US17844481
申请日：2022-06-20
Applicant: Cognex Corporation
Inventor： Laurens Nunnink , Rene Delasauce , Nicole Dippel , Andreas Weber
Abstract: This invention provides a vision system having a housing and an interchangeable lens module is provided. The module is adapted to seat on a C-mount ring provided on the front, mounting face of the housing. The module is attached via a plurality of fasteners that pass through a frame of the module and into the mounting face. The module includes a connector in a fixed location, which mates with a connector well on the mounting face to provide power and control to a driver board that operates a variable (e.g. liquid) lens within the optics of the lens module. The driver board is connected to the lens body by a flexible printed circuit board (PCB), which also allows for axial motion of the lens body with respect to the frame. This axial motion can be effected by an adjustment ring that can include an indexed/lockable, geared, outer surface.
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公开(公告)号：US11216630B2
公开(公告)日：2022-01-04
申请号：US16896164
申请日：2020-06-08
Applicant: Cognex Corporation
Inventor： Ivan A. Bachelder , Chen Gao , Francisco Azcona Guerrero , Jose Fernandez Dorado , Esther Oteo Lozano , Andreas Weber
Abstract: This invention provides a system and method for detecting and acquiring one or more in-focus images of one or more barcodes within the field of view of an imaging device. A measurement process measures depth-of-field of barcode detection. A plurality of nominal coarse focus settings of a variable lens allow sampling, in steps, of a lens adjustment range corresponding to allowable distances between the one or more barcodes and the image sensor, so that a step size of the sampling is less than a fraction of the depth-of-field of barcode detection. An acquisition process acquires a nominal coarse focus image for each nominal coarse focus setting. A barcode detection process detects one or more barcode-like regions and respective likelihoods. A fine focus process fine-adjusts, for each high-likelihood barcode, the variable lens near a location of the barcode-like regions. The process acquires an image for decoding using the fine adjusted setting.
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Patent Agency Ranking
公开(公告)号：US20210405267A1
公开(公告)日：2021-12-30
申请号：US17475059
申请日：2021-09-14
Applicant: COGNEX CORPORATION
Inventor： Esther Oteo , Andreas Weber , Saul Sanz Rodriguez , Jens Ruetten , Pepe Fernandez-Dorado
Abstract: Systems and methods reduce temperature induced drift effects on a liquid lens used in a vision system. A feedback loop receives a temperature value from a temperature sensor, and based on the received temperature value, controls a power to the heating element based on a difference between the measured temperature of the liquid lens and a predetermined control temperature to maintain the temperature value within a predetermined control temperature range to reduce the effects of drift. A processor can also control a bias signal applied to the lens or a lens actuator to control temperature variations and the associated induced drift effects. An image sharpness can also be determined over a series of images, alone or in combination with controlling the temperature of the liquid lens, to adjust a focal distance of the lens.
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公开(公告)号：USD1060478S1
公开(公告)日：2025-02-04
申请号：US29876724
申请日：2023-05-26
Applicant: COGNEX CORPORATION
Designer： José Fernández Dorado , Pablo Garcia Campos , Martijn Visser , Andreas Weber , Laurens Nunnink
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公开(公告)号：US20240412019A1
公开(公告)日：2024-12-12
申请号：US18412900
申请日：2024-01-15
Applicant: Cognex Corporation
Inventor： Ivan A. Bachelder , Chen Gao , Francisco Azcona Guerrero , Jose Fernandez Dorado , Esther Oteo Lozano , Andreas Weber
IPC: G06K7/14 , G06K7/10 , H04N23/67 , H04N23/959
Abstract: This invention provides a system and method for detecting and acquiring one or more in-focus images of one or more barcodes within the field of view of an imaging device. A measurement process measures depth-of-field of barcode detection. A plurality of nominal coarse focus settings of a variable lens allow sampling, in steps, of a lens adjustment range corresponding to allowable distances between the one or more barcodes and the image sensor, so that a step size of the sampling is less than a fraction of the depth-of-field of barcode detection. An acquisition process acquires a nominal coarse focus image for each nominal coarse focus setting. A barcode detection process detects one or more barcode-like regions and respective likelihoods. A fine focus process fine-adjusts, for each high-likelihood barcode, the variable lens near a location of the barcode-like regions. The process acquires an image for decoding using the fine adjusted setting.
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公开(公告)号：US20220318539A1
公开(公告)日：2022-10-06
申请号：US17567832
申请日：2022-01-03
Applicant: Cognex Corporation
Inventor： Ivan A. Bachelder , Chen Gao , Francisco Azcona Guerrero , Jose Fernandez Dorado , Esther Oteo Lozano , Andreas Weber
Abstract: This invention provides a system and method for detecting and acquiring one or more in-focus images of one or more barcodes within the field of view of an imaging device. A measurement process measures depth-of-field of barcode detection. A plurality of nominal coarse focus settings of a variable lens allow sampling, in steps, of a lens adjustment range corresponding to allowable distances between the one or more barcodes and the image sensor, so that a step size of the sampling is less than a fraction of the depth-of-field of barcode detection. An acquisition process acquires a nominal coarse focus image for each nominal coarse focus setting. A barcode detection process detects one or more barcode-like regions and respective likelihoods. A fine focus process fine-adjusts, for each high-likelihood barcode, the variable lens near a location of the barcode-like regions. The process acquires an image for decoding using the fine adjusted setting.
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公开(公告)号：US11366284B2
公开(公告)日：2022-06-21
申请号：US16371987
申请日：2019-04-01
Applicant: Cognex Corporation
Inventor： Laurens Nunnink , Rene Delasauce , Nicole Dippel , Andreas Weber
Abstract: This invention provides a vision system having a housing and an interchangeable lens module is provided. The module is adapted to seat on a C-mount ring provided on the front, mounting face of the housing. The module is attached via a plurality of fasteners that pass through a frame of the module and into the mounting face. The module includes a connector in a fixed location, which mates with a connector well on the mounting face to provide power and control to a driver board that operates a variable (e.g. liquid) lens within the optics of the lens module. The driver board is connected to the lens body by a flexible printed circuit board (PCB), which also allows for axial motion of the lens body with respect to the frame. This axial motion can be effected by an adjustment ring that can include an indexed/lockable, geared, outer surface.
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