A processing apparatus that processes a workpiece by irradiating the workpiece with laser light, the apparatus including a rotation unit configured to rotate with a rotation axis as a center, thereby rotating an intensity distribution of the laser light emitted therefrom with the rotation axis as a center, a scanning unit configured to scan the laser light applied to the workpiece, and a control unit configured to irradiate the workpiece with the laser light while reducing at least one of an angular shift and a positional shift of the laser light entering the workpiece, which occur due to a shift between the rotation axis and a barycentric line of the laser light entering the rotation unit.

An edge position detecting apparatus for detecting a position of an edge of a disk-shaped workpiece includes a chuck table having a holding surface for holding the workpiece thereon, a laser displacement gage having a laser applying unit including a light source, for applying a linear laser beam shaped into a linear shape perpendicular to a direction of travel from the light source toward the holding surface, across the edge of the workpiece, and a beam detecting unit including a plurality of photoelectric transducers arrayed at predetermined spaced intervals along a direction for detecting a reflection of the linear laser beam, a moving mechanism for moving the laser displacement gage and the chuck table relatively to each other along the longitudinal direction, and a calculating unit for calculating the position of the edge on the basis of information of a change in an amount of the detected reflection.

A laser engraving apparatus (100) is calibrated using a number of predetermined calibration images (12). The calibration images (12) are engraved on a predefined substrate surface (14, 15) of a substrate (16) by varying only a single laser parameter. Based on measured colour values of the engraved calibration images, a relationship between said colour values and a predefined laser parameter value, for example, a predefined laser power, is established. This relationship is then used to generate a map for mapping a grayscale value of an input image to a grayscale value of an output image, which is then engraved on the substrate (16) while varying the same laser parameter that was varied during the calibration.

A computer-numerically-controlled machine can include a light source and a housing. The light source can be configured to deliver electromagnetic energy to at least one location on a material at least partially disposed within the computer-numerically-controlled machine. The housing can include at least one side part surrounding an interior space and the at least one location on the material. The housing can include a structural material defining at least a portion of the interior space. The housing can further include a protective material protecting the side part. The protective material can reduce a permeability of the side part to the electromagnetic radiation relative to the structural material alone.

The invention relates to a method for introducing a defined weakening line by means of material removal on a cover material (20) which has a visible side (22) and a rear side (21) opposite the visible side (22), in which a pulsed laser beam (31) from a laser (30) is aimed at the rear side (21) of the cover material (20) and is guided along a path (50) and at least one observation unit (11) for monitoring the weakening process is provided underneath the visible side (22) of the cover material (20), wherein a second laser beam (61) from a second laser (60) is coupled into the beam path of the first laser beam (31), wherein the first pulsed laser beam (31) is used to produce the weakening line, and the radiation from the second laser beam (61) that emerges on the visible side (22) is detected by the at least one observation unit (11).

A computer numerically controlled machine may include a source of electromagnetic energy. A beam of electromagnetic energy from the source may be delivered to a destination such as, for example, a material positioned in a working area of the computer numerically controlled machine. The beam of electromagnetic energy may be susceptible to interferences while traveling from the source to the destination. The computer numerically controlled machine may include a beam detector configured detect an interference of the beam by measuring a power of the beam of electromagnetic energy at a location between the source and the destination. An interference of the beam may be detected if the power of the beam is less than a threshold value. A controller at the computer numerically controlled machine may perform one or more actions in response to the beam detector detecting the interference of the beam of electromagnetic energy.

The control unit executes: a first execution step of executing a processing program to set a target value to a value defined by a processing program and performing feedback control on a driving current of a laser oscillator; a detection step of detecting an output fluctuation during execution of the first execution step; a specification step of specifying a physical quantity for which a measured value within a predetermined monitoring time before an occurrence timing of the output fluctuation does not satisfy a predetermined condition as an abnormal physical quantity from a plurality of physical quantities measured during execution of the first execution step; and a program update step of detecting appearance of a predetermined feature in an abnormal physical quantity as a fluctuation factor during execution of a post-update processing program, and updating the processing program to correct the driving current to reduce a difference between the laser output power and the target value compared with when the output fluctuation occurs in the first execution step after detection of the fluctuation factor.

The laser machining system includes a laser device configured to output a laser beam, and a machining head configured to emit the laser beam emitted by a laser oscillator of the laser device and propagated through an optical fiber, to a workpiece in order to perform laser machining. The machining head includes at least one wavelength selective mirror having wavelength selectivity with various values of reflectivity and transmittance according to wavelengths, and at least one image capturing device. The laser machining system monitors abnormality in a laser optical system leading from the laser oscillator to the machining head, during the laser machining, by reflecting light propagated from a side of introduction of the laser beam into the machining head by the wavelength selective mirror, making the light incident on an image capturing surface of the image capturing device, and detecting incident light illuminance distribution appearing on the image capturing surface of the image capturing device.

Apparatus (1) for additively manufacturing of three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), wherein a measuring unit (5) is provided that is configured to generate information relating to a collimated part (6) of the energy beam (4) and information relating to a focused part (7) of the energy beam (4).

Methods for repairing a coated part with holes extending therethrough are disclosed. In one embodiment, a method comprises receiving a part where a coating on a first side of the part at least partially obstructs a first opening of a hole on the first side of the part. Measured hole data indicative of a position of a second opening of the hole on a second side of the part opposite the first side is then acquired. Based on the measured hole data, the first opening of the hole is cleared of the coating by laser drilling via the second opening of the hole.