公开(公告)号：US11651173B2

公开(公告)日：2023-05-16

申请号：US17498532

申请日：2021-10-11

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： William P. Hurley, IV ,  Vladimir Gurevich ,  Carl D. Wittenberg ,  Bryan E. Joles

IPC: G06K7/14

CPC classification number: G06K7/1413

Abstract: Multiple focus ball bearing actuator calibration is disclosed herein. An example method includes focusing, using a ball bearing actuator, a lens to a first focus position to image a first target; recording, in a lookup table, a first distance and a first actuator code corresponding with the first focus position; focusing the lens to a second focus position to image a second target; recording, in the lookup table, a second distance and a second actuator code corresponding with the second focus position; calculating a plurality of focus positions for a plurality of distances over a total working range of the barcode reader using the first focus position and the second focus position, wherein the calculating is performed without a temperature correction factor; and recording, in the lookup table, the plurality of distances and a plurality of actuator codes corresponding to the plurality of focus positions.

公开(公告)号：US20230067508A1

公开(公告)日：2023-03-02

申请号：US17873058

申请日：2022-07-25

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Chinh Tan ,  Vladimir Gurevich

IPC: G02B13/02 ,  G02B9/34 ,  G02B13/18 ,  G06K7/14 ,  G06K7/10

Abstract: An imaging engine including a telephoto lens for compact long range barcode readers is disclosed herein. An example imaging engine includes an imaging sensor and a telephoto lens assembly. The example telephoto lens assembly includes a first lens, disposed along an optical axis; a second lens, disposed along the optical axis to correct for pupil aberrations of the image projected after a fourth lens onto the imaging sensor; a third lens, disposed along the optical axis to correct for chromatic aberration of the image projected after the fourth lens onto the imaging sensor; and the fourth lens, disposed along the optical axis to correct for optical field curvature of the image projected after the fourth lens onto the imaging sensor.

公开(公告)号：US20220383011A1

公开(公告)日：2022-12-01

申请号：US17333628

申请日：2021-05-28

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Vladimir Gurevich ,  David T. Shi ,  Chinh Tan ,  Courtney L. Watson ,  Carl D. Wittenberg

IPC: G06K7/10 ,  G02B27/30 ,  G06K7/14

Abstract: An aiming system for use in a small height scan engine chassis. The aiming system includes a beam source assembly generating an input beam along a central axis and a collimator assembly having a lens group that defines a tilt axis having a tilt angle, α, relative to the central axis, to deflect the input beam from the central axis onto the tilt axis. The collimator assembly further includes a recess within which a diffractive optical element is sealably mounted to convert the deflected input beam into an aiming pattern at a focal distance of the lens group.

公开(公告)号：US20220077644A1

公开(公告)日：2022-03-10

申请号：US17531240

申请日：2021-11-19

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Vladimir Gurevich ,  Matthew D. Blasczak ,  Peter Fazekas

IPC: H01S3/10 ,  H01S5/068

Abstract: A system is disclosed which includes a laser which has a calibrated optical power and a calibrated tolerance. The system includes a driving circuit configured to generate a first current pulse and a second current pulse. The system includes a primary observer module configured to observe a first and second primary input. The system includes one or more secondary observer modules configured to observe one or more first and one or more second secondary inputs. The system includes a controller communicatively coupled to the laser, driving circuit, primary observer module, and the one or more secondary observer modules. The controller is configured to receive an information packet, calculate an optical power, determine a deviation of the optical power from the calibrated optical power, compare the deviation with the calibrated tolerance, and perform an action if the deviation exceeds the calibrated tolerance.

公开(公告)号：US11211766B2

公开(公告)日：2021-12-28

申请号：US16227653

申请日：2018-12-20

Applicant: Zebra Technologies Corporation

Inventor： Vladimir Gurevich ,  Matthew D. Blasczak ,  Peter Fazekas

IPC: H01S5/068 ,  G01S7/497 ,  H01S3/10 ,  H01S3/102 ,  H01S3/09 ,  H01S3/11 ,  G01S7/484

Abstract: A system is disclosed which includes a laser which has a calibrated optical power and a calibrated tolerance. The system includes a driving circuit configured to generate a first current pulse and a second current pulse. The system includes a primary observer module configured to observe a first and second primary input. The system includes one or more secondary observer modules configured to observe one or more first and one or more second secondary inputs. The system includes a controller communicatively coupled to the laser, driving circuit, primary observer module, and the one or more secondary observer modules. The controller is configured to receive an information packet, calculate an optical power, determine a deviation of the optical power from the calibrated optical power, compare the deviation with the calibrated tolerance, and perform an action if the deviation exceeds the calibrated tolerance.

公开(公告)号：US20210150163A1

公开(公告)日：2021-05-20

申请号：US16689873

申请日：2019-11-20

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Vladimir Gurevich

IPC: G06K7/10 ,  G06K7/14

Abstract: Example methods and apparatus to provide radial aiming patterns are disclosed herein. An example assembly includes an imaging assembly configured to capture an image of a portion of an environment in a field of view (FOV); and an aiming light generator configured to form an illuminated radial aiming pattern and present the illuminated radial aiming pattern to enable the portion of the environment to be positioned within the FOV, the illuminated radial aiming pattern including an illuminated central mark in a central area of the illuminated radial aiming pattern, an illuminated first line, an illuminated second line, an illuminated third line, and an illuminated fourth line, wherein the first line, the second line, the third line, and the fourth line extend outward from the central mark and are angularly distributed about the central mark.

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：US12159190B2

公开(公告)日：2024-12-03

申请号：US18225659

申请日：2023-07-24

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Vladimir Gurevich ,  Carl D. Wittenberg ,  Thomas Lackemann ,  Dayou Wang

IPC: G06K7/14 ,  G06T7/11

Abstract: Methods and apparatus for locating small indicia in large images are disclosed herein. An example method includes: identifying an aiming pattern zone that includes a detected or presumed location of an aiming light pattern, wherein an offset between the location and a center of image data varies due to a parallax; determining one or more coordinates of the aiming pattern zone; capturing image data representing an image of an environment appearing within a field of view (FOV) of a scanner including the indicia; encoding the one or more coordinates into a tagline of the image; and providing the image with the tagline to an indicia decoder such that the indicia decoder attempts to decode the indicia from the image data starting in a region of the image data selected based upon the one or more coordinates.

公开(公告)号：US12147868B2

公开(公告)日：2024-11-19

申请号：US17977352

申请日：2022-10-31

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： David P. Goren ,  Harry E. Kuchenbrod ,  William Sackett ,  Vladimir Gurevich ,  Mehaboob Kumbalakkuzhiyil

IPC: G06K7/10 ,  G06K7/14

Abstract: Devices having a long-range imaging engine formed of two cameras having different resolution are disclosed herein. An example imaging engine includes a front-end, with the cameras, terminated in a communication interface for coupling to an external host processor that performs image processor. The front-end has a near field image sensor and a far field image sensor, and a normalization processor to receive the respective image data from the sensors and normalize that image data prior to sending to the host processor. Normalization includes adjusting an image size, aspect ratio, or pixel count complying with data rate constraints imposed by the communication interface or the host processor.

公开(公告)号：US12050961B2

公开(公告)日：2024-07-30

申请号：US17829066

申请日：2022-05-31

Applicant: ZEBRA TECHNOLOGIES CORPORATION

Inventor： Vladimir Gurevich ,  Mehaboob Kumbalakkuzhiyil ,  Andrew Cornell ,  Christopher W. Brock ,  David Tsi Shi

IPC: G06K7/10 ,  G06K7/14

CPC classification number: G06K7/1413

Abstract: Methods and apparatus for configuring reduced decode ranges for barcode scanners are disclosed. An example method includes determining a closest focus distance of a plurality of focus distances at which a barcode placed at a furthest limit of a reduced decode range can be successfully decoded; determining a furthest focus distance of the plurality of focus distances at which the barcode placed at a closest limit of the reduced decode range can be successfully decoded; determining a subset of the plurality of focus distances that consists of the closest focus distance, the furthest focus distance, and focus distances between the closest focus distance and the farthest focus distance; and configuring the barcode scanner to only use the subset of focus distances during subsequent attempts to decode barcodes.