The controller executes a first process of moving a support portion so that inside the peripheral edge of an object, a focusing position moves along the peripheral edge, thereby forming a first modified region, and following the first process, executes a second process of moving the support portion so that the focusing position moves, thereby forming a second modified region The measurement data acquiring portion, at execution of the first process, acquires measurement data associated with position information on a position of the object. The controller, at execution of the second process, causes the driving portion to shift a position of the condenser lens, the position being along the direction of an optical axis, to an initial position based on the measurement data acquired in the first process, before or when the focusing position moves from outside of the object to inside thereof.

A reflected beam detection value obtained by detecting a reflected beam of a visible beam generated on a sheet metal or a scattered beam detection value obtained by detecting a scattered beam from an optical component is stored in a storage unit, the reflected beam or the scattered beam being detected at a time when the sheet metal is cut by irradiating the sheet metal with a laser beam under a predetermined processing condition. The reflected beam detection value or the scattered beam detection value stored in the storage unit is registered as a reference value associated with the predetermined processing condition.

A reflected beam detection value obtained by detecting a reflected beam of a visible beam generated on a sheet metal or a scattered beam detection value obtained by detecting a scattered beam from an optical component is stored in a storage unit, the reflected beam or the scattered beam being detected at a time when the sheet metal is cut by irradiating the sheet metal with a laser beam under a predetermined processing condition. The reflected beam detection value or the scattered beam detection value stored in the storage unit is registered as a reference value associated with the predetermined processing condition.

A laser processing machine 100 includes: a laser processing unit 1 configured to process a workpiece W by using a laser beam L; an imaging device configured to image the workpiece W irradiated with the laser beam L; and a control device configured to control the laser processing unit 1 in accordance with a processing condition 51c for processing the workpiece W. The control device controls operation of the laser processing unit 1 such that size OIS of an optical image OI and a peak value PV of light intensity LI of the optical image OI observed from image information obtained by imaging the workpiece W with the imaging device approach preset reference values 60.

A method for processing a workpiece includes the steps of arranging the workpiece in a work space and guiding an OCT measurement beam of an optical coherence tomograph using a processing head so as to scan the workpiece, wherein the pose of the processing head in the work space and also the pose of the OCT measurement beam relative to the processing head are known. Distance measurement values of the optical coherence tomograph are determined during the scanning, which are used to determine at least one of the pose of the workpiece in the workspace, the presence of a workpiece in the workspace, the identity of the workpiece in the workspace, and the presence of a processing feature of the workpiece that was carried out on the workpiece in a previous processing step.

A method for processing a workpiece includes the steps of arranging the workpiece in a work space and guiding an OCT measurement beam of an optical coherence tomograph using a processing head so as to scan the workpiece, wherein the pose of the processing head in the work space and also the pose of the OCT measurement beam relative to the processing head are known. Distance measurement values of the optical coherence tomograph are determined during the scanning, which are used to determine at least one of the pose of the workpiece in the workspace, the presence of a workpiece in the workspace, the identity of the workpiece in the workspace, and the presence of a processing feature of the workpiece that was carried out on the workpiece in a previous processing step.

A method performed by a laser machine includes: before a laser-beam machining process, recording an influence of a change in a position of at least one movable laser machine component on a lateral position of a focal point of a laser beam in a focal plane or relative to a reference point, storing an association between the position of the movable laser machine component and the lateral position, and then, setting, based on the stored association, the focal point to a preset lateral position in the focal plane or relative to the reference point by setting the position of the movable laser machine component. The movable laser machine component can include at least one of at least one optical element in a beam path of the laser beam, a laser-beam machining head in a work area of a laser machine, or a movable part of the laser-beam machining head.

A laser device includes a laser oscillator configured to emit a laser beam, and an optical unit configured to receive the laser beam and emit the laser beam outside. The optical unit includes: a partially transmissive mirror configured to reflect a part of the laser beam toward the outside and transmit a remaining part of the laser beam; a diffusion plate configured to diffuse the laser beam which has passed through the partially transmissive mirror and deflect the laser beam in a predetermined direction, at a predetermined diffusion angle; and a photodiode configured to receive the laser beam deflected by the diffusion plate, and output an electric signal. The laser device is configured such that deviation of an optical axis of the laser beam is monitored based on the electric signal of the photodiode.

An apparatus for removing a portion of a coating system present in a multi-glazed window including: a decoating component to focus a laser source at a focus distance; two motors to move the decoating component along the X and Y axis; one optical system to detect on which interface the coating system is localized, and to estimate a distance between the decoating component and the detected interface; a third motor to control the position of the decoating component along a Z axis; and a displacement control unit of the third motor to displace the decoating component of a displacement distance equal to the difference between the estimated distance and said the distance in order to focus the decoating component on the detected interface.

The present disclosure relates to methods of manufacture, apparatus, and fixtures. An apparatus comprising an inner liner having a hollow chamber extending the length of the inner liner, at least two guide rings disposed collectively along the inner liner, and at least one lumen portion extending through each of the at least two guide rings and being parallel with the hollow chamber, wherein the at least two components are fixed by welding is provided. Further provided is a fixture and a method of manufacture.