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    Mechanical Mount for Stationary, Actively-Cooled Lenses in High Power Laser Material Processing Head
    1.
    发明申请
    Mechanical Mount for Stationary, Actively-Cooled Lenses in High Power Laser Material Processing Head 有权

    公开(公告)号：US20220388094A1

    公开(公告)日：2022-12-08

    申请号：US17338046

    申请日：2021-06-03

    Applicant: II-VI Delaware, Inc

    Inventor： Danny Chan

    IPC: B23K26/06 ,  B23K26/70

    Abstract: A high-power laser processing head has precisely centered stationary lenses. The assembly of the lenses in the head can reduce contamination. The lens is affixed (soldered) in a ring-shaped highly precise mount, which ensures a high thermal conductivity of the joining interface. The mount and lens can be cleaned as a unit and inserted in a precisely manufactured receptacle of a housing module. A seal can provide sealing between an inner surface in the receptacles and a base surfaces of the mount. The modules has a groove around the diameter of the receptacle to catch any particles generated when inserting the lens mounts into the receptacle. The assembly is clamped into place by the next housing module. The lens is directly cooled by the module's body to mitigate contamination on the lens surface. During repairs, both lens and mount can be exchanged as a unit.

    Device For Monitoring Properties of A Laser Beam
    2.
    发明申请
    Device For Monitoring Properties of A Laser Beam 有权

    公开(公告)号：US20240426654A1

    公开(公告)日：2024-12-26

    申请号：US18368000

    申请日：2023-09-13

    Applicant: II-VI Delaware, Inc.

    Inventor： Daniel Labahn ,  Danny Chan ,  Patrick Kuhl ,  Romon Chakrabarti ,  Andreas Ziemann ,  Hannes Noack

    IPC: G01J1/42 ,  G01J1/04

    Abstract: The disclosure relates to a system and method for monitoring a high power laser beam in a laser material processing optical system, and provides a device and method for monitoring a high power laser beam. According to the present disclosure a detailed determination of properties of a high-power laser beam takes place in the direction of an optical fiber or laser beam entering a laser processing head connected to the laser source and these measurements can be performed during the processing operation. The device according to the present disclosure has optical sensors for measuring the intensity and respective current laser power.

    LASER PROCESSING HEAD HAVING CONTAMINATION RESISTANCE
    4.
    发明申请
    LASER PROCESSING HEAD HAVING CONTAMINATION RESISTANCE 有权

    公开(公告)号：US20230095918A1

    公开(公告)日：2023-03-30

    申请号：US17448826

    申请日：2021-09-24

    Applicant: II-VI Delaware, Inc.

    Inventor： Romon Chakrabarti ,  Danny Chan ,  Patrick Kühl ,  Hannes Noack ,  Georg Schmidt ,  Alexander Müller

    IPC: B23K26/38 ,  B23K26/06

    Abstract: A laser processing head for directing a laser beam includes two reflectors and a sole lens element. The first reflector disposed in a housing's interior reflects the laser beam from a source to the second reflector, which then reflects the laser beam toward a process zone for a workpiece. The single lens element is disposed in the housing's interior between the reflectors. The lens element can be moved to adjust a focal position of the laser beam beyond the housing's outlet. To reduce contamination, one or more nozzles are configured to direct purge gas across one or more of the first reflector, the second reflector, and the lens element, while one or more collection areas disposed in the interior are configured to collect contamination directed from the purge gas.

    SYSTEM AND METHOD TO MEASURE AND CALIBRATE LASER PROCESSING MACHINE USING LOW-POWER BEAM PROFILER
    5.
    发明申请
    SYSTEM AND METHOD TO MEASURE AND CALIBRATE LASER PROCESSING MACHINE USING LOW-POWER BEAM PROFILER 有权

    公开(公告)号：US20230130740A1

    公开(公告)日：2023-04-27

    申请号：US17452320

    申请日：2021-10-26

    Applicant: II-VI Delaware, Inc.

    Inventor： Danny Chan

    IPC: B23K26/70 ,  B23K26/06 ,  B23K26/04

    Abstract: An apparatus calibrates a laser processing machine and includes an imaging sensor and a controller. The controller directs output of a beam from the machine’s low power pointer laser and directs an actuator at measurement conditions. Images of the beam are obtained by an imaging sensor, and the controller measures a parameter of at least one of the machine’s optical components. The controller then outputs an indication of the machine indicative of the measured parameter. For example, the controller can calculate a focus position of the beam from the laser head so the Z-position of the laser head can be adjusted for any discrepancies. In other examples, the controller can determine an offset of the fiber tip of the head so adjustments to operations can be made, or the controller can determine centering of the beam in the head’s nozzle so adjustments can be made.

    Dynamic focus for laser processing head
    6.
    发明授权
    Dynamic focus for laser processing head 有权

    公开(公告)号：US12265207B2

    公开(公告)日：2025-04-01

    申请号：US17192327

    申请日：2021-03-04

    Applicant: II-VI Delaware, Inc.

    Inventor： Danny Chan

    IPC: G02B3/04 ,  B23K26/06 ,  B23K26/70 ,  G02B19/00

    Abstract: A laser processing head transmits a laser beam to a process zone. An input lens fixedly mounted in the head images the beam from an input with a first (negative) focal length along an optical axis. An intermediate lens is movably mounted in the head in connection with an actuator, which can move the intermediate lens along the axis at a variable lens distance relative to the input lens. The intermediate lens images the beam with a second (positive) focal length. An output lens fixedly mounted in the head images the beam with a third (positive) focal length along the axis to a focal point. The third focal length is greater than the second focal length and provides a large working distance. The focal point can be varied at a variable focal distance along the axis in relation to the variable lens distance by which the intermediate lens is moved.

    Mechanical mount for stationary, actively-cooled lenses in high power laser material processing head
    7.
    发明授权
    Mechanical mount for stationary, actively-cooled lenses in high power laser material processing head 有权

    公开(公告)号：US12172230B2

    公开(公告)日：2024-12-24

    申请号：US17338046

    申请日：2021-06-03

    Applicant: II-VI Delaware, Inc

    Inventor： Danny Chan

    IPC: B23K26/06 ,  B23K26/70 ,  G02B7/02

    Abstract: A high-power laser processing head has precisely centered stationary lenses. The assembly of the lenses in the head can reduce contamination. The lens is affixed (soldered) in a ring-shaped highly precise mount, which ensures a high thermal conductivity of the joining interface. The mount and lens can be cleaned as a unit and inserted in a precisely manufactured receptacle of a housing module. A seal can provide sealing between an inner surface in the receptacles and a base surfaces of the mount. The modules has a groove around the diameter of the receptacle to catch any particles generated when inserting the lens mounts into the receptacle. The assembly is clamped into place by the next housing module. The lens is directly cooled by the module's body to mitigate contamination on the lens surface. During repairs, both lens and mount can be exchanged as a unit.

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