公开(公告)号：US11221461B2

公开(公告)日：2022-01-11

申请号：US16824368

申请日：2020-03-19

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Igor Vinogradov ,  David D. Landron ,  Christopher W. Brock

IPC: G02B15/14 ,  G02B7/10 ,  G02B7/02 ,  G03B13/36 ,  G02B3/14

Abstract: Methods and systems for tracking focus of an adjustable variable focus lens-based imaging system are disclosed. An example method includes identifying an initial focus position of an adjustable variable focus lens assembly and determining focusing parameters corresponding to that focus position. The focusing parameters are compared to a lens behavior model and a new, compensated focus position of the lens assembly is determined correcting for changes in lens assembly performance. A small window focusing sweep range, between forward and aft positions, may also be adjusted based on the lens behavior model to better identify the compensated focus position.

公开(公告)号：US20210373274A1

公开(公告)日：2021-12-02

申请号：US16887256

申请日：2020-05-29

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Alexander J. Naney ,  Igor Vinogradov

IPC: G02B7/02 ,  G02B7/09

Abstract: Optical arrangements for small size wide angle auto focus imaging lens for high resolution sensors are disclosed herein. An example optical assembly includes a first lens holder, a second lens holder, a first lens group, a biasing element, and a variable focus optical element. The first lens holder includes a collar having an internal flange forming a spring seat and the first lens group is disposed within the first lens holder. The second lens holder includes a collar defining a chamber and is coupled to the collar of the first lens holder. The variable focus optical element is disposed within the chamber of the second lens holder and the biasing element is disposed within the chamber of the second lens holder between the spring seat and the variable focus optical element and configured to apply a threshold force to the variable focus optical element.

公开(公告)号：US11120236B1

公开(公告)日：2021-09-14

申请号：US16803746

申请日：2020-02-27

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Igor Vinogradov ,  Eric Trongone ,  Qing Tu

IPC: G06K15/12 ,  G06K7/10

Abstract: An apparatus for capturing an image of at least one object appearing in an imaging field of view (FOV). A housing has an imaging sensor operably coupled with the circuit board, the imaging sensor configured to capture an image frame appearing in the imaging FOV and defining an imaging axis. An illumination assembly has a plurality of light sources operably coupled with the circuit board, a diffuser positioned adjacent to the plurality of light sources, the diffuser configured to generate a diffused light pattern, and a light pipe positioned adjacent to the plurality of light sources to generate a direct illumination pattern and an off-axis illumination pattern, wherein the direct illumination pattern is oriented generally parallel to the imaging axis and the off-axis illumination pattern is configured to intersect the imaging axis.

公开(公告)号：US20210271836A1

公开(公告)日：2021-09-02

申请号：US16803746

申请日：2020-02-27

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Igor Vinogradov ,  Eric Trongone ,  Qing Tu

IPC: G06K7/10

Abstract: An apparatus for capturing an image of at least one object appearing in an imaging field of view (FOV). A housing has an imaging sensor operably coupled with the circuit board, the imaging sensor configured to capture an image frame appearing in the imaging FOV and defining an imaging axis. An illumination assembly has a plurality of light sources operably coupled with the circuit board, a diffuser positioned adjacent to the plurality of light sources, the diffuser configured to generate a diffused light pattern, and a light pipe positioned adjacent to the plurality of light sources to generate a direct illumination pattern and an off-axis illumination pattern, wherein the direct illumination pattern is oriented generally parallel to the imaging axis and the off-axis illumination pattern is configured to intersect the imaging axis.

公开(公告)号：US20210165982A1

公开(公告)日：2021-06-03

申请号：US17047259

申请日：2019-04-11

Applicant: Zebra Technologies Corporation

Inventor： Mark Drzymala ,  Edward Barkan ,  Igor Vinogradov

IPC: G06K7/10

Abstract: An apparatus and assembly for redirecting the central illumination axis of an illumination assembly towards the central field of view (FOV) axis of an imaging assembly using an optical element that provides an optical magnification of less than 1.5×, where the central illumination axis at the point of the illumination assembly is non-parallel to the central FOV axis.

公开(公告)号：US20210150164A1

公开(公告)日：2021-05-20

申请号：US16685992

申请日：2019-11-15

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Gary G. Schneider ,  Igor Vinogradov ,  William Sackett

IPC: G06K7/14 ,  G06T7/90 ,  H04N9/04 ,  H04N5/232

Abstract: Systems and methods of processing image data using color image sensors are disclosed herein. An example object scanner includes a color image sensor array configured to produce image data representative of an imaging field of view. The example object scanner also includes an image processor. The image process is configured to separate the image data produced by the color image sensor array into two or more channels of image data and, for each of the channels of image data, analyze the respective image data to determine a contrast of the respective image data. The image processor is also configured to select a particular channel of the two or more channels that has the highest contrast; and output the image data corresponding to the particular channel.

公开(公告)号：US20190318140A1

公开(公告)日：2019-10-17

申请号：US15952740

申请日：2018-04-13

Applicant: Zebra Technologies Corporation

Inventor： Mark Drzymala ,  Edward Barkan ,  Igor Vinogradov

IPC: G06K7/10

Abstract: An apparatus and assembly for redirecting the central illumination axis of an illumination assembly towards the central field of view (FOV) axis of an imaging assembly using an optical element that provides an optical magnification of less than 1.5×, where the central illumination axis at the point of the illumination assembly is non-parallel to the central FOV axis.

公开(公告)号：US12231756B2

公开(公告)日：2025-02-18

申请号：US17977173

申请日：2022-10-31

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Alexander J. Naney ,  Igor Vinogradov ,  Carl D. Wittenberg ,  David Tsi Shi ,  Vladimir Gurevich

IPC: H04N23/55

Abstract: An optical assembly for an autofocus lens system for imaging an object appearing in an imaging field of view (FOV) is provided. The optical assembly includes a compensator lens assembly disposed along an optical axis, with the compensator lens assembly configured to receive light along the optical axis and to provide tuning of a flange focal length of the optical assembly. A variable focus assembly, including a variable focus optical element, is disposed along the optical axis to receive light from the compensator lens assembly. The variable focus optical element has a tunable focal plane. A fixed focus optical group is disposed along the optical axis to receive light from the variable focus assembly, the fixed focus optical group is configured to focus the light at the flange focal length of the optical assembly.

公开(公告)号：US20240147040A1

公开(公告)日：2024-05-02

申请号：US17977173

申请日：2022-10-31

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Alexander J. Naney ,  Igor Vinogradov ,  Carl D. Wittenberg ,  David Tsi Shi ,  Vladimir Gurevich

IPC: H04N5/225

CPC classification number: H04N5/2254

Abstract: An optical assembly for an autofocus lens system for imaging an object appearing in an imaging field of view (FOV) is provided. The optical assembly includes a compensator lens assembly disposed along an optical axis, with the compensator lens assembly configured to receive light along the optical axis and to provide tuning of a flange focal length of the optical assembly. A variable focus assembly, including a variable focus optical element, is disposed along the optical axis to receive light from the compensator lens assembly. The variable focus optical element has a tunable focal plane. A fixed focus optical group is disposed along the optical axis to receive light from the variable focus assembly, the fixed focus optical group is configured to focus the light at the flange focal length of the optical assembly.

公开(公告)号：US11922260B2

公开(公告)日：2024-03-05

申请号：US17743780

申请日：2022-05-13

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Igor Vinogradov ,  Eric Trongone

IPC: G06K7/10

CPC classification number: G06K7/10732 ,  G06K7/10742 ,  G06K7/1098

Abstract: Machine vision devices with configurable illumination and aiming pattern generation are disclosed. An example system includes a housing having a cavity; an imaging sub-assembly mounted in the cavity including: an imager configured to capture an image; an aiming light source mounted in the housing configured to generate a collimated beam of light, an illumination light source configured to generate illumination light; and interchangeable first and second cover plates configured for mounting to the housing in front of the imaging sub-assembly to form an external cover for the housing and sealably protect the imager from an environment, wherein the first and second cover plates have respective passive optical elements that modify the collimated beam of light to form respective aiming patterns, and wherein at least one of the first cover plate or the second cover plate has a third optical element that modifies the illumination light.