The invention relates to a laser plotter (2) for processing a job for cutting, engraving, marking and/or lettering a preferably flat workpiece (7), which plotter has at least one housing (3) with a preferably closable processing chamber (8) for positioning a workpiece (7) on a processing table (9), at least one irradiation source in the form of a laser (5,6), and a controller (13) for controlling the carriage (14), which is operated by means of preferably a belt drive, with a focusing unit (12) arranged movably thereon, which is designed to deflect a laser beam (10) in the direction of the workpiece (7), wherein an extraction device (1) for extracting the exhaust gases (25) produced during the laser process by generating an air flow (26) is arranged in the processing chamber (8) below the processing table (9), in particular beneath a support surface (27) of the processing table (9). The processing table (9) is designed in such a way that the support surface (27) of the processing table (9) is designed to extend over the entire surface and is in particular airtight, and that, in order to form an air stream (26), an extraction channel (27) is arranged below the support surface (27), preferably parallel to the support surface (27), which extraction channel ends in an exhaust opening (29), wherein the extraction channel (27) is connected via at least one extraction opening (28,29) to the processing chamber (8) for extracting the exhaust gases or vapors, respectively (25), produced during the laser process.

A method for separating a workpiece along a separation line by using ultrashort laser pulses of a laser beam includes splitting the laser beam, using a beam splitter optical unit, into a plurality of partial laser beams. Each partial laser beam is focused by a focusing optical unit onto a surface and/or into a volume of the workpiece so that the partial laser beams are arranged next to one another and spaced apart from one another along the separation line. The method further includes implementing material ablation in the workpiece along the separation line by introducing the ultrashort laser pulses into the workpiece. The partial laser beams are repeatedly moved away from an initial position along the separation line by a deflection value and are subsequently moved back into the initial position. The deflection value is less than or equal to a distance between two adjacent partial laser beams.

An allograft optimization system utilizes an optical system to determine the outer perimeter of a tissue blank for allograft cutting therefrom. The optical system determines an optimal allograft array pattern that can be derived from the irregular tissue blank and may include a plurality of various allograft shapes and sizes. A computer operates an allograft optimization computer program that receives input regarding the outer perimeter of the tissue blank. A cutting implement, such as a laser, is configured to cut the allografts from the irregularly shaped tissue blank according the allograft array pattern. The cutting implement is automatically actuated by an actuator with respect to the tissue blank to cut the allografts therefrom. The cutting implement may be a laser or a galvo laser that is directed by one or more mirrors. The tissue may be birth tissue including placental tissue and amnion.

A moveable head of a computer numerically controlled machine may deliver electromagnetic energy sufficient to cause a first change in a material at least partially contained within an interior space of the CNC machine. A feature of the material may be imaged using at least one camera present inside the interior space to update a position of the material, and the moveable head may be aligned to deliver electromagnetic energy sufficient to cause a second change in the material such that the second change is positioned on the material consistent with the first change and with an intended final appearance of the material. Methods, systems, and article of manufacture are described.

A laser machining method forms a machined portion in a machining area of a machining object by irradiating the machining area with a pulse laser beam. The laser machining method includes an irradiation process of irradiating the machining area with the pulse laser beam output from an excimer laser apparatus by guiding the pulse laser beam to part of the machining area and moving the guided pulse laser beam through irradiation spots, and a movement process of moving the machining object in a height direction of the machining object. The irradiation process is performed at a plurality of height positions on the machining object moved in the height direction in the movement process. In the irradiation process, at least part of each of the irradiation spots of the pulse laser beam overlaps another irradiation spot adjacent to the irradiation spot.

A laser transmission characteristic value determination method for determining an appropriate transmission characteristic value of a laser so that a marked letter becomes a predetermined font size or more when marking a letter on a surface of a heat shrinkable tube formed on the outer periphery of a battery cell.

An additive manufacturing system includes one or more processors configured to determine one or more geometrical characteristics of each of multiple segments of a build part at a candidate position relative to an additive manufacturing instrument. The one or more geometrical characteristics include an angle of incidence between a beam line extending from a beam source and a surface normal of a respective skin of the corresponding segment proximate to the beam line. The one or more processors are configured to control the additive manufacturing instrument, based on the one or more geometrical characteristics, to direct focused energy beams from a first orientation relative to the build part to form a first segment of the segments of the build part and to direct focused energy beams from a second orientation relative to the build part to form a second segment of the segments of the build part.

An allograft optimization system utilizes an optical system to determine the outer perimeter of a tissue blank for allograft cutting therefrom. The optical system determines an optimal allograft array pattern that can be derived from the irregular tissue blank and may include a plurality of various allograft shapes and sizes. A computer operates an allograft optimization computer program that receives input regarding the outer perimeter of the tissue blank. A cutting implement, such as a laser, is configured to cut the allografts from the irregularly shaped tissue blank according the allograft array pattern. The cutting implement is automatically actuated by an actuator with respect to the tissue blank to cut the allografts therefrom. The cutting implement may be a laser or a galvo laser that is directed by one or more mirrors. The tissue may be birth tissue including placental tissue and amnion.

Laser cutting a dieboard using a laser cutting system, including: setting a width of material to be removed from the dieboard using the laser cutting system; capturing an image of the width of the material removed by the laser cutting system using at least one image capture unit; measuring the captured width of the material captured on the image using the at least one image capture unit; and comparing the measured width of the material to the set width of the material, and moving a laser head of the laser cutting system up and down to adjust a focal length of the laser cutting system and moving the laser head of the laser cutting system sideways to adjust a speed of the laser head, until the measured width and the set width are substantially similar.

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.