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    Systems for Optical Power Control for Laser Safety of a Time-of-Flight Illumination System
    3.
    发明申请
    Systems for Optical Power Control for Laser Safety of a Time-of-Flight Illumination System 有权

    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.

    Systems for optical power control for laser safety of a time-of-flight illumination system
    4.
    发明授权
    Systems for optical power control for laser safety of a time-of-flight illumination system 有权

    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.

    BARCODE READERS INCLUDING ILLUMINATION ASSEMBLIES WITH DIFFERENT COLOR LIGHTS
    5.
    发明申请
    BARCODE READERS INCLUDING ILLUMINATION ASSEMBLIES WITH DIFFERENT COLOR LIGHTS 审中-公开

    公开(公告)号：US20200380224A1

    公开(公告)日：2020-12-03

    申请号：US16902026

    申请日：2020-06-15

    Applicant: ZEBRA TECHNOLOGIES CORPORATION

    Inventor： Edward Barkan ,  Darran Michael Handshaw ,  Matthew D. Blasczak

    IPC: G06K7/10

    Abstract: Imaging arrangements and barcode readers including such imaging arrangements. An imaging arrangement for use in a barcode reader includes a housing. The imaging arrangement also includes a light source configured to emit light along a central light axis. The light source is disposed in the housing. The imaging arrangement also includes a lens having a first surface and a second surface opposite the first surface. The lens is disposed in the housing. The first surface is configured to face the light source and is structured to substantially collimate light received from the light source into a collimated beam. The second surface includes surface structures structured to generate a patterned beam in response to receiving the collimated beam.

    METHODS AND DEVICES FOR AN ELECTRICALLY EFFICIENT GREEN LASER DIODE DRIVE SYSTEM WITH BOOST SERVO
    7.
    发明申请
    METHODS AND DEVICES FOR AN ELECTRICALLY EFFICIENT GREEN LASER DIODE DRIVE SYSTEM WITH BOOST SERVO 有权

    公开(公告)号：US20230111084A1

    公开(公告)日：2023-04-13

    申请号：US17499721

    申请日：2021-10-12

    Applicant: ZEBRA TECHNOLOGIES CORPORATION

    Inventor： Matthew D. Blasczak ,  James R. Giebel ,  Mark Weitzner ,  Gary G. Schneider

    IPC: H01S5/026 ,  H01S5/042 ,  H01S5/00

    Abstract: Methods and devices for driving a laser diode are disclosed herein. An example method includes a boost regulator outputting a maximum boost voltage to drive a laser diode that is configured to output light within a wavelength range of 495 nanometers (nm) to 570 nm. A boost servo may measure a laser voltage, and calculate a voltage difference between the two voltages. The servo may then compare the voltage difference to a drive voltage to determine an excess voltage, and may cause the boost regulator to output an optimum voltage based on the excess voltage. The boost servo may also calculate a low voltage to drive at least one additional component that is electrically coupled to the boost regulator when the laser diode is inactive; and may cause the boost regulator to output the low voltage to power the at least one additional component.

    Compact Optical System For A VCSEL Based Laser Aim Pattern Generator
    9.
    发明公开
    Compact Optical System For A VCSEL Based Laser Aim Pattern Generator 审中-公开

    公开(公告)号：US20240113496A1

    公开(公告)日：2024-04-04

    申请号：US17956383

    申请日：2022-09-29

    Applicant: ZEBRA TECHNOLOGIES CORPORATION

    Inventor： Matthew D. Blasczak ,  Chinh Tan

    IPC: H01S5/02253 ,  H01S5/0232 ,  H01S5/183 ,  H05K1/18

    CPC classification number: H01S5/02253 ,  H01S5/0232 ,  H01S5/18361 ,  H05K1/181 ,  H05K2201/10121

    Abstract: An optical pattern generating system for providing an aiming pattern in a field of view (FOV). The optical pattern generating system includes a light source configured to provide light along an optical axis, the light source including a vertical-cavity surface-emitting laser. The system further includes an optical substrate disposed along the optical axis configured to receive the light from the light source, the optical substrate having a first surface having a first flat optical element thereon, the first flat optical element being an element that collimates the light, a second surface having a second flat optical element thereon, the second flat optical element configured to diffract the light to form an optical pattern, and a thickness defined by the distance between the first surface and second surface.

    LASER DRIVING MODE FOR AIMING SYSTEM OF BARCODE IMAGER
    10.
    发明申请
    LASER DRIVING MODE FOR AIMING SYSTEM OF BARCODE IMAGER 有权

    公开(公告)号：US20230112765A1

    公开(公告)日：2023-04-13

    申请号：US17499690

    申请日：2021-10-12

    Applicant: ZEBRA TECHNOLOGIES CORPORATION

    Inventor： Vladimir Gurevich ,  David Tsi Shi ,  Jason S. Mak ,  Thomas Lackemann ,  Matthew D. Blasczak

    IPC: G06K7/10 ,  G06K7/14

    Abstract: Method and systems for driving an aiming assembly of a barcode imager are provided. An example method includes obtaining an operating mode of the barcode imager having an aiming assembly and, in response, determining a duty cycle of an aiming pulse of the aiming assembly. That duty cycle is determined as a percentage of a frame duration of an imager sensor and, further, such that simultaneous constraints are satisfied by the aiming pulse. The constraints include a simultaneous frame duration-independent, peak pulse optical power constraint and a frame duration-dependent heat dissipation constraint.

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