WO2023217554A1 - Messvorrichtung zum vermessen eines laserlinienstrahls - Google Patents
Messvorrichtung zum vermessen eines laserlinienstrahls Download PDFInfo
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- WO2023217554A1 WO2023217554A1 PCT/EP2023/061259 EP2023061259W WO2023217554A1 WO 2023217554 A1 WO2023217554 A1 WO 2023217554A1 EP 2023061259 W EP2023061259 W EP 2023061259W WO 2023217554 A1 WO2023217554 A1 WO 2023217554A1
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- WO
- WIPO (PCT)
- Prior art keywords
- measuring device
- laser
- laser line
- line beam
- mirrors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/4257—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/073—Shaping the laser spot
- B23K26/0738—Shaping the laser spot into a linear shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure
- B23K26/127—Working by laser beam, e.g. welding, cutting or boring in a special environment or atmosphere, e.g. in an enclosure in an enclosure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/0977—Reflective elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/40—Semiconductor devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic materials other than metals or composite materials
- B23K2103/56—Inorganic materials other than metals or composite materials being semiconducting
Definitions
- the invention relates to a measuring device for measuring a laser line beam generated by a laser system according to the preamble of claim 1 and a corresponding laser system.
- laser systems are used that deliver laser beams with very homogeneous line-shaped intensity distributions in a respective focus zone.
- a focus zone is also referred to here as a laser line focus or simply as a laser line.
- this is also referred to as a laser line beam.
- Corresponding laser systems aim to To provide intensity distributions with large to very large aspect ratios of the beam diameters in two perpendicular directions of the beam profile (i.e. perpendicular to the beam propagation directions), while at the same time ensuring a large depth of field in the direction of the smaller beam diameter.
- Examples of applications in which such a laser line beam is used include laser processing such as the recrystallization of silicon dioxide layers deposited on glass substrates, e.g. B. are used in TFT displays, the laser-based doping of e.g. B. Solar cells and laser lift-off processes, e.g. B. be used in the production of microelectronic components.
- laser processing such as the recrystallization of silicon dioxide layers deposited on glass substrates, e.g. B. are used in TFT displays, the laser-based doping of e.g. B. Solar cells and laser lift-off processes, e.g. B. be used in the production of microelectronic components.
- An exemplary laser system that generates and uses a laser beam with a laser line focus is described in WO 2018/019374 Al.
- the long laser lines with high homogeneity are usually measured by a beam profiler, which moves along the laser line and measures the laser line at specific points in a spatially resolved manner. This process can take several minutes. Of the total length of the laser line, a very small part of, for example, only 1 mm in length of the laser line is measured step by step and then combined to form a measurement of the total length of the laser line.
- the measurement with the beam profile measuring device typically takes place in the same process chamber in which the substrate is processed by the laser line beam he follows .
- the process chamber is normally provided with a protective gas atmosphere and hermetically sealed. So that the laser line radiation can penetrate into the process chamber, an entry area, usually in the form of an entry window, is provided on the process chamber for the laser line beam.
- Line extension direction of the laser line beam movable laser beam cutters to develop, in particular to extend, that they shorten the length of the laser line beam to the length required for the measurement by the beam profile measuring device.
- this requires very long laser beam cutters that protrude beyond the process chamber.
- a structure with two long laser beam cutters is unstable and can therefore tend to cause undesirable vibrations.
- the object of the invention is therefore to propose a measuring device that is improved compared to the prior art for measuring a laser line beam generated by a laser system, which can deliver particularly precise measurement results and has a compact structure.
- a measuring device for measuring a laser line beam generated by a laser system, the measuring device having: (a) a process chamber which has an entry area for the laser line beam to enter the process chamber, (b) a beam profile measuring device which is arranged in the process chamber and for measuring the through the The laser line beam entering the entry area is set up, and (c) a trimming device for trimming the laser line beam before it enters (through the entry area) into the process chamber.
- the trimming device has a large number of at least three individual mirrors that can be moved by means of at least one drive for trimming the laser line beam before it enters the process chamber, the individual mirrors being movable at least in sections in at least one direction of movement relative to a line extension of the laser line beam predetermined by the measuring device are .
- a trimming device which has a plurality of at least three mirrors which trim the laser line beam before it enters the process chambers.
- the mirrors are moved under the laser line beam and over the entry area.
- the trimming device with its large number of mirrors ensures a compact design.
- the large number of mirrors, which are particularly smaller or shorter than the laser beam cutters can be, so that the trimming device with its mirrors can be prevented from extending outside the process chambers, so that the desired compact structure is achieved.
- the measuring device specifies the line extension of the laser line beam means that the orientation of the line extension of the laser line beam is relative to or. is specified for the measuring device. This means that the alignment of the laser system Laser line beam with its line extension on the
- Measuring device i.e. on the entry area of the process chamber, is specified by the measuring device, so that the laser system is oriented towards the measuring device for positioning the laser line beam.
- Various devices can be used on the measuring device to specify the line extension.
- the line extension or Length of the laser line beam is predetermined by the entry area, so that the laser line beam can hit it and enter the process chamber.
- the line extension or Length of the laser line beam is specified by the beam profiler in the process chamber.
- the beam profile measuring device is preferably set up to be movable, in particular movable, over a distance parallel to the line extension of the laser line beam.
- the at least one direction of movement of the mirrors is arranged relative to the route along which the beam profile measuring device can be moved. It is possible, for example, as will be explained in more detail later, that a section of the direction of movement of the individual mirrors is aligned transversely or parallel to the line extension and/or a section of the direction of movement of the individual mirrors is aligned transversely, in particular perpendicular, to the line extension.
- a large number of mirrors means three or more mirrors.
- the fact that the individual mirrors can be moved at least in sections in a direction of movement relative to a line extension of the laser line beam means that the individual mirrors do not move in one direction of movement along their entire range of movement must be movable relative to the line extension. Instead, it is possible that there are several directions of movement, as explained above, for example parallel and transverse, to the line extension along which the mirrors can move. However, the mirrors can also only be movable in one direction of movement, for example transversely or parallel to the line extension.
- the at least one drive of the individual and movable mirrors can be a common drive for several of the large number of mirrors or all mirrors, for example in the form of a camshaft, or, alternatively, can be individual drives for each individual mirror .
- the at least one drive thereby provides the mobility, in particular movability, of the mirror.
- the drives can be electrically motorized, for example.
- the process chamber can simultaneously serve as a measuring chamber for measuring the laser line beam and as a processing chamber for processing a substrate using the laser line beam.
- a protective gas atmosphere can prevail in the process chamber, the process chamber preferably being hermetically sealed.
- the entry area can be designed, for example, as an entry window, for example made of glass or plastic.
- the beam profile measuring device can be designed to be movable, in particular movable, parallel to the line extension of the laser line beam.
- the beam profile measuring device can have its own drive. This allows the beam profiler to measure of the laser line beam can be moved along the laser line extension.
- the individual mirrors are movable in such a way that a predetermined measuring gap and/or a predetermined processing gap remains at the entry area between two of the large number of individual mirrors, through which the laser line beam can enter the process chamber.
- Particularly preferred is the aforementioned combination in which the mirrors can be moved in such a way that either the predetermined measuring gap or the predetermined processing gap remains between the respective two mirrors.
- the measuring device preferably comprises a control device for controlling the measurement of the laser line beam.
- the control device can be set up by controlling the at least one drive for moving the mirrors to shift the predetermined measuring gap in a predetermined measuring direction relative to the line extension of the laser line beam relative to a measuring range of the beam profile measuring device.
- the control device carries out a corresponding movement or controls a feed of the beam profile measuring device in order to measure or To coordinate the detection area of the beam profile measuring device with a position of the specified measuring gap. to bring together. In this way, different areas of the laser line beam can be directed along the line extension into the process chamber and onto the beam profile measuring device.
- the predetermined measuring gap has a length in the range of 20 mm to 100 mm and/or the predetermined processing gap has a length in the range of 1. 200mm to 1. 800 mm. Length here refers to a maximum extent of an element and/or a size measured in the longitudinal direction of the laser line extension and parallel to the laser line beam, unless otherwise stated. It is particularly preferred that the predetermined measuring gap has a length in the range from 30 mm to 80 mm, more preferably in the range from 40 mm to 60 mm. It is also preferred that the predetermined machining gap has a length in the range from 800 mm to 1. 600 mm, further preferably in the range from 900 mm to 1. 550 mm, has. It has been shown that particularly precise and fast measurement is possible with the measuring gap lengths mentioned. With the processing gap lengths mentioned, it has been shown that particularly precise and rapid processing of substrates is possible.
- the plurality of mirrors includes three or more mirrors.
- the measuring device comprises at least four, in particular at least five, very particularly at least six and further particularly at least nine, individual mirrors.
- the large number of mirrors can reach an advantageous maximum number of 48, especially 36 and also especially 30.
- a number of mirrors in the range from 4 to 30, especially 5 to 24, have proven to be particularly advantageous in terms of compactness and precision during measurement and processing.
- the individual mirrors each have a length in the range from 40 mm to 200 mm, particularly in the range from 60 mm to 150 mm and also in particular in the range from 80 mm to 120 mm. As previously indicated, this is in particular the largest extent of the mirrors or This means the size measured in the longitudinal direction of the laser line extension and parallel to the laser line beam.
- the length of a mirror therefore corresponds to the effective partial length of the laser line beam that can be reflected by a mirror.
- the measuring device preferably has a beam absorber, in particular arranged outside the process chamber, which is designed to absorb the part of the laser line beam that is trimmed by the individual mirrors and reflected onto the beam absorber.
- the trimmed part of the laser line beam therefore refers to the part that does not enter the process chamber through the entry area but is reflected onto the beam absorber.
- the jet absorber can in particular be water-cooled. Alternatively, the jet absorber can also be arranged within the process chamber, but advantageous water cooling is generally not possible there.
- the mirrors of the trimming device can be at a, in particular matching, preset or adjustable angle be positioned opposite the laser line beam. In particular, they are positioned at such an angle that they reflect the laser line beam onto the beam absorber of the measuring device.
- the beam absorber can thus destroy the energy of the part of the laser line beam that is undesirable in the process chamber.
- the measuring device has a predetermined path along which the individual mirrors can be moved.
- the roadway can preferably extend at least in sections parallel to the line extension of the laser line beam.
- each of the individual mirrors is arranged on a carriage, by means of which the respective individual mirror can be moved by moving the carriage.
- the carriage thus serves as a means for moving the mirrors, with each mirror being moved individually on the carriage by means of each carriage.
- the at least one drive of the mirrors can be coupled to the carriage in terms of drive technology in order to move the mirrors.
- the carriages are arranged to be movable on at least one roadway formed by a rail.
- the roadway can in particular be the previously mentioned roadway.
- the rail represents a comparatively simple and cost-effective way of arranging the carriages and thus the mirrors so that they can move along a road.
- a continuous rail can be used.
- other variants of roadways are conceivable and possible. It can be provided that (each) adjacent carriages are connected to one another and can be moved together. In particular, adjacent wagons can be directly connected to one another, which means that a common connecting link between adjacent wagons connects them to one another.
- two rows of carriages each connected to one another can be provided, with one row being movable to the laser line beam from a first side, for example from the left, and the other row from a second side, for example from the right to trim this.
- the laser line beam can be trimmed to virtually any length relative to the length at which it enters the process chamber. be shortened.
- adjacent carriages are connected to one another by means of spherical bearings, which are designed to ensure a minimum distance between the individual carriages when the carriages are moved.
- the articulated connection using such joint bearings as connecting means between adjacent carriages ensures that the mirrors are not damaged by collisions between the individual carriages during the movement. This is particularly important when the road has a curve or has a (partial) radius along which the cars are moved, which is particularly true in the case of a closed, for example round, elliptical or rectangular (possibly with rounded corners) trajectory of the road, or a U-shaped trajectory of the road, the case is how they can be used advantageously.
- the distance between the individual mirrors when stationary, i.e. without this process preferably zero or . be minimal so that the laser line beam cannot penetrate between them.
- the respective carriages of the individual mirrors can be moved along a common roadway. This means that all cars advantageously run on a single roadway, which is continuous and allows practically any trimming of the laser line beam.
- the shared roadway has a closed trajectory, such as a round, elliptical or rectangular (in particular with rounded corners) trajectory, or a substantially U-shaped trajectory. This allows compact structures of the trimming device and thus the measuring device as a whole.
- the individual mirrors can be movable independently of one another and/or each to be movable along separate trajectories.
- all mirrors in particular with their carriages, can be moved independently of one another on separate lanes transversely, in particular essentially perpendicularly, to the line extension. Accordingly, they can be moved individually under the laser line beam and moved out of it.
- an embodiment variant is advantageous in which at least one of the mirrors is in the direction of movement at least one other mirror can be moved and arranged.
- several mirrors can also be movable and arranged over one or more mirrors.
- it can also be provided that three or more mirrors can be moved and arranged one above the other.
- carriages assigned to the mirrors or the mirrors themselves can be of different sizes. This means in particular that the carriages and/or mirrors are in particular in a transverse extension or The height extension transversely, especially vertically, can be distinguished from the line extension of the laser beam.
- the mirrors or trolleys can be provided with an open space or cavity into which the smaller trolley with mirror or the smaller mirror can be inserted so that it is located under the larger trolley or mirror.
- the length and/or width of the mirrors in the longitudinal direction of the line extension of the laser beam can remain the same among the individual mirrors or can differ from one another.
- the mirrors can each be arranged one above the other, which means in particular that the mirrors can be moved one above the other without contact and can therefore be stacked on top of one another without contact.
- the individual mirrors, especially each equipped with the previously mentioned carriages, can be movable on roadways, with the individual mirrors and carriages being able to run on different roadways, in particular rails, which can be arranged parallel to the line extension of the laser line beam.
- a large length can be covered with the mirrors, along which the measuring gap or processing gap can be adjusted, although the mirrors do not have to protrude outwards or not very far, because these can be arranged on top of each other instead of next to each other.
- the individual mirrors can be moved at least in sections in at least one direction of movement transversely to a line extension of the laser line beam predetermined by the measuring device.
- the trimming device ensures the mobility or, in other words, displaceability of the mirrors transversely to the line extension or Longitudinal direction of the laser line beam for a particularly simple, compact structure.
- the movability transversely to the line extension can prevent the trimming device with its mirrors from extending outside the process chambers, so that the desired compact structure is achieved.
- the at least one direction of movement or one of several directions of movement can be essentially perpendicular to the line extension.
- Essentially vertical includes vertical and production-related deviations or Tolerances of a mathematically perfect orthogonality.
- a direction of movement transverse to the line extension of the laser line beam can in particular be one that is at an angle of at least 10 °, preferably at least 30 ° and further preferably at least 45 ° Line extension is .
- a direction of movement can be essentially perpendicular to the line extension. If there is a direction of movement or An angle can be the only or act the single angle or, alternatively, many directions of movement can be provided, each of which is at a different angle to the line extension.
- the object mentioned at the beginning is further achieved by a laser system for generating a laser line beam, the laser system having at least one laser source for emitting at least one laser beam, a laser conversion device for converting the at least one laser beam emitted by the at least one laser source into the laser line beam and the measuring device according to the invention for measuring of the generated laser line beam.
- the laser sources and laser forming devices known from the prior art, for example the documents mentioned at the beginning, can be used.
- Figure 1 is a perspective view of a first
- FIG. 1 is a perspective view of a second measuring device in a processing position
- FIG. 3 shows an alternative perspective view of the second embodiment of the measuring device from FIG. 2 in the processing position
- Figure 4 is the perspective view of Fig. 2 of the second embodiment of the measuring device of FIG. 2 and 3, where the measuring device is in a surveying position;
- Figure 5 shows the alternative perspective view of the
- Figure 6 is a perspective view of a third
- Figure 7 is a perspective view of a fourth
- Figure 8 is a perspective view of a fifth
- Figure 9 is a schematic representation of a
- Fig. 1 shows a variant modified compared to the prior art of an arrangement referred to herein as measuring device 10 consisting of a process chamber 20, a beam profile measuring device 30 and a laser beam cutting arrangement 50.
- the measuring device 10 is shown here in a processing position in which a laser line beam 1 is moved from an original length LI to a processing length or a machining gap L2 is trimmed with such a machining length, since for practical reasons the generated length or The original length LI of the laser line is greater than the length L2 required for processing an individual substrate.
- the part of the laser line that goes beyond the necessary length L2 of the laser line is virtually cut off by the beam cutters 52, 54. reflected onto a beam absorber 40 which absorbs the energy contained in this part of the laser line.
- the laser beam 1 which is trimmed to the processing length L2, can process a substrate (not shown) within the process chamber 20.
- the process chamber 20 is normally provided with a protective gas atmosphere and is hermetically sealed.
- Fig. 1 is the direction of incidence 4 or .
- Propagation direction of the laser line beam 1 is shown, which is oriented perpendicular to the line extension of the laser line beam 1. This means in the view of Fig. 1 that the laser line beam is coming from above.
- the direction of incidence 4 is like this oriented that the laser line beam 1 can propagate through the entry area 22 into the process chamber 20.
- the laser line beam 1 has a focus located in the process chamber 20.
- the length LI or L2 of the laser line beam 1 therefore extends perpendicular to its direction of incidence 4.
- a measurement process of the laser line beam 1 is typically required, in which the laser line beam 1 is measured.
- the long laser line is measured with high homogeneity by the beam profile measuring device 30, which moves along the laser line and measures the laser line at specific points in a spatially resolved manner. This process can take several minutes.
- a very small part of, for example, only 1 mm in length of the laser line is measured step by step and then combined to form a measurement of the total length of the laser line. Since only a small part of the laser line is required for the current measurement during the entire measurement process, the energy must be absorbed in the remaining part of the line. This usually happens in radiation absorbers, such as the one in Fig. 1 shown water-cooled radiation absorber 40 outside the process chamber 20.
- the measurement with the beam profile measuring device 30 takes place in the same process chamber 20 in which the substrate is also processed by the laser line beam 1. Not only is the laser line generated longer than the length of the laser line actually entering the process chamber 20. Because the laser line beam 1 and the entrance window 22 are used for processing the substrate the process chamber 20 is typically many times longer than the short part of the laser line that is measured by the beam profile measuring device 30 at a given time. When measuring, the energy contained in the part of the laser line beam 1 that is not measured at any given time must therefore also be destroyed. As described, destruction takes place advantageously in water-cooled absorbers, such as the absorber 40 shown. However, the absorber 40 shown is located outside the process chamber 20 and can therefore advantageously be cooled with water.
- Fig. 1 shows a further development of a measuring device 10 that is basically known from the prior art.
- Fig. 1 can be seen as the already mentioned and movable along the long x-axis of the x, y, z coordinate system shown above the entrance area 22 and in front of the laser line beam 1 (in the opposite directions indicated by the double arrows 3 along the x- Axis movable) jet cutting arrangement 50 in the form of two jet cutters 52, 54 protrude beyond the short sides of the process chamber 20.
- the beam cutters 52, 54 are considerably longer here so that they allow not only the laser line beam 1 or its laser line to the processing length L2, but also by appropriately moving the beam cutter 52, 54 a significantly shorter survey length L3 or a
- the required length of the beam cutter 52, 54 which can be moved in the longitudinal direction of the laser line of the generated laser line beam 1, is so large that it protrudes beyond the process chamber 20. This ensures an increased space requirement and ensures that the jet cutters 52, 54 reach an area in which process reliability must be ensured in a complex manner, for example in order to avoid contamination of the jet cutters 52, 54.
- FIG. 2 and 3 now show an improved embodiment of the measuring device 10, in which the jet cutting arrangement 50 has been omitted. Instead, a trimming device 60 with a large number of individual mirrors 64 is used here. These mirrors 64 can be moved in sections parallel to the line extension of the laser line beam 1, as shown by the double arrows in FIG. 1 indicating the direction of movement 3. 2 and 3 can be seen. The mirrors 64 can also be moved in sections transversely to the line extension (see the double arrows near the short sides of the process chamber 20, which are transverse to the double arrows on the long side of the process chamber 20), in the present case along an exemplary rectangular trajectory (with rounded corners). a roadway 62 shown here as an example, on which the mirrors 64 can be moved.
- the movability of the mirrors 64 is provided by at least one drive (not shown), so that it can also be said that they can be moved on the roadway 62.
- the roadway 62 is here, for example, designed as a rail on which the mirrors 64 are arranged by means of corresponding carriages 66, with one mirror 64 each being arranged on each carriage 66.
- the carriages 66 and thus the individual mirrors 64 can be moved along the directions of movement 3.
- FIG. 4 and 5 now show the same measuring device 10 from FIG. 2 and 3 in the same views, but the carriages 66 and thus the mirrors 64 have been moved along the directions of movement 3 shown in such a way that the processing gap L2 or the original length LI of the laser line beam 1 has been shortened to the measuring gap L3 with the correspondingly reduced length. Due to the large number of mirrors 64 newly moved into the area below (relative to the z-axis) the laser line beam 1 and above (relative to the z-axis) the entrance area 22, a large part of the laser line is now reflected onto the beam absorber 40 and the Energy of the laser line beam 1 is destroyed there.
- a part of the laser line beam 1 with a predetermined length can pass through the small measuring gap L3 in order to be measured by the beam profile measuring device 30.
- the beam profile measuring device 30 can be moved with its measuring range 32 in the direction of movement 2 parallel to the line extension of the laser line beam 1 so that the measuring range 32 detects the measuring gap L3.
- the entire laser line can now be measured step by step by moving the carriages 66 along the movement directions 3 in order to make a not yet measured part of the laser line beam 1 accessible to the measuring area 32 through a new measuring gap L3, whereby The beam profile measuring device 30 is moved in parallel along the laser line extension.
- the individual measurements of parts of the laser line made in this way can later be combined to form an overall measurement.
- a control device may control coordinating the travel of the carriages 66 and the beam profiler 30.
- Figure 6 shows one compared to Figures. 2 to 5 alternative embodiment of a measuring device 10, in which the trajectory of the roadway 62 is not rectangular and not closed, but open.
- the trajectory here is essentially U-shaped.
- Figure 7 shows one compared to Figures. 2 to 6 again alternative embodiment of a measuring device 10, in which the carriages 66 with the mirrors 64 of the trimming device 60 can each be moved individually and perpendicular to the line extension of the laser line beam 1, namely below the
- Figure 8 shows one compared to Figures. 2 to 7 also alternative embodiment of a measuring device 10, in which the carriages 66 with the mirrors 64 of the trimming device 60 can each be moved individually and parallel to the line extension of the laser line beam 1, namely below the laser line beam 1 and in front of the entry area 22 and from that Laser line beam 1 away and out of the entry area 22.
- the mirrors 64 which are shown here by way of example in a number of five, can therefore only be moved in the directions of movement 3 shown, parallel to the line extension of the laser line beam 1. This is advantageously achieved with only a short length of the trimming device 60 by using three on the right in FIG.
- carriages 66 on each of which one of the mirrors 64 is formed, can be moved one above the other without contact along the directions of movement 3 and can be arranged one above the other, stacked virtually without contact.
- the three carriages 66 located here, for example, on the far right and parallel to the laser line beam 1, together with their mirrors 64, have different sizes.
- the sizes refer to the height of the carriages 66 perpendicular to the line extension of the laser beam 1, although the lengths of the carriages 66 and/or mirrors 64 can be the same.
- the cars 66 each have an open space or Cavity into which a smaller car 66 can be moved, so that it is at least partially hidden under the larger car 66.
- a relatively smaller carriage 66 can be seen in FIG. 8 from left to right, each under an adjacent larger car 66 the three right-hand carriages 66 can be moved. The other way around, the larger carriages 66 can also be moved over the smaller carriages.
- the differently sized carriages 66 can run on different lanes (not explicitly shown in FIG. 8) which are arranged parallel to one another and in particular parallel to the line extension of the laser line beam 1.
- the two carriages 66 on the left outside with their mirrors 64 are of different sizes, so that the smaller carriage 66 there with its mirror 64 can also be moved below the larger carriage 66 with its mirror 64.
- FIG. 9 shows schematically a laser system 100 for generating the laser line beam 1.
- the laser system 100 has at least one laser source 110 for emitting at least one laser beam 4.
- the laser system 100 has a laser conversion device 120 for converting the at least one laser beam 4 emitted by the laser source 110 into the laser line beam 1.
- the measuring device 10 according to one of the above exemplary embodiments is used in the laser system 100 to measure the generated laser line beam 1.
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- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380039226.XA CN119173742A (zh) | 2022-05-10 | 2023-04-28 | 用于测量激光线射束的测量设备 |
| KR1020247038607A KR20250005341A (ko) | 2022-05-10 | 2023-04-28 | 레이저 라인 빔을 측정하기 위한 측정 장치 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022111572.0A DE102022111572A1 (de) | 2022-05-10 | 2022-05-10 | Messvorrichtung zum Vermessen eines Laserlinienstrahls |
| DE102022111572.0 | 2022-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023217554A1 true WO2023217554A1 (de) | 2023-11-16 |
Family
ID=86425896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/061259 Ceased WO2023217554A1 (de) | 2022-05-10 | 2023-04-28 | Messvorrichtung zum vermessen eines laserlinienstrahls |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR20250005341A (de) |
| CN (1) | CN119173742A (de) |
| DE (1) | DE102022111572A1 (de) |
| WO (1) | WO2023217554A1 (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008053459A (ja) * | 2006-08-24 | 2008-03-06 | Sumitomo Heavy Ind Ltd | ビームプロファイル計測方法、ビームプロファイル計測装置、レーザ加工方法、及び、レーザ加工装置 |
| KR101164524B1 (ko) * | 2009-12-21 | 2012-07-10 | 에이피시스템 주식회사 | 레이저 빔의 라인 길이 조절이 가능한 레이저 가공 장치 |
| CN103170736A (zh) * | 2011-12-20 | 2013-06-26 | Ap系统股份有限公司 | 激光退火装置 |
| WO2018019374A1 (en) | 2016-07-27 | 2018-02-01 | Trumpf Laser Gmbh | Laser line illumination |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5854803A (en) | 1995-01-12 | 1998-12-29 | Semiconductor Energy Laboratory Co., Ltd. | Laser illumination system |
| DE19630607C1 (de) | 1996-07-29 | 1997-10-23 | Microlas Lasersystem Gmbh | Vorrichtung zum Überwachen der Energie eines Laserstrahls |
-
2022
- 2022-05-10 DE DE102022111572.0A patent/DE102022111572A1/de active Pending
-
2023
- 2023-04-28 CN CN202380039226.XA patent/CN119173742A/zh active Pending
- 2023-04-28 KR KR1020247038607A patent/KR20250005341A/ko active Pending
- 2023-04-28 WO PCT/EP2023/061259 patent/WO2023217554A1/de not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008053459A (ja) * | 2006-08-24 | 2008-03-06 | Sumitomo Heavy Ind Ltd | ビームプロファイル計測方法、ビームプロファイル計測装置、レーザ加工方法、及び、レーザ加工装置 |
| KR101164524B1 (ko) * | 2009-12-21 | 2012-07-10 | 에이피시스템 주식회사 | 레이저 빔의 라인 길이 조절이 가능한 레이저 가공 장치 |
| CN103170736A (zh) * | 2011-12-20 | 2013-06-26 | Ap系统股份有限公司 | 激光退火装置 |
| WO2018019374A1 (en) | 2016-07-27 | 2018-02-01 | Trumpf Laser Gmbh | Laser line illumination |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119173742A (zh) | 2024-12-20 |
| KR20250005341A (ko) | 2025-01-09 |
| DE102022111572A1 (de) | 2023-11-16 |
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