WO2012153785A1 - レンズおよびそのレンズを搭載したレーザ加工装置 - Google Patents
レンズおよびそのレンズを搭載したレーザ加工装置 Download PDFInfo
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- WO2012153785A1 WO2012153785A1 PCT/JP2012/061921 JP2012061921W WO2012153785A1 WO 2012153785 A1 WO2012153785 A1 WO 2012153785A1 JP 2012061921 W JP2012061921 W JP 2012061921W WO 2012153785 A1 WO2012153785 A1 WO 2012153785A1
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- WIPO (PCT)
- Prior art keywords
- lens
- laser processing
- processing apparatus
- light
- surface portion
- Prior art date
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Classifications
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- 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
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/06—Simple or compound lenses with non-spherical faces with cylindrical or toric faces
-
- 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
- B23K26/0665—Shaping the laser beam, e.g. by masks or multi-focusing by beam condensation on the workpiece, e.g. for focusing
-
- 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
- B23K26/0734—Shaping the laser spot into an annular 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
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
- B23K26/388—Trepanning, i.e. boring by moving the beam spot about an axis
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- 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
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
- B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/04—Cutting or splitting in curves, especially for making spectacle lenses
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/09—Severing cooled glass by thermal shock
- C03B33/091—Severing cooled glass by thermal shock using at least one focussed radiation beam, e.g. laser beam
- C03B33/093—Severing cooled glass by thermal shock using at least one focussed radiation beam, e.g. laser beam using two or more focussed radiation beams
-
- 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
- G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
-
- 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
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0966—Cylindrical lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B2003/0093—Simple or compound lenses characterised by the shape
Definitions
- the present invention relates to a lens for laser processing on a workpiece and a laser processing apparatus equipped with the lens, and in particular, a member having an arbitrary shape having a closed curve is processed on the workpiece. And a laser processing apparatus equipped with the lens.
- a laser processing apparatus for processing a member having an arbitrary shape by irradiating a workpiece such as a glass substrate with a laser beam.
- Patent Document 1 or 2 proposes a technique for forming a processing region in a desired shape by using a moving mechanism for moving a cylindrical lens or a moving mechanism for moving a stage on which a workpiece is mounted as a laser processing apparatus. Has been.
- the laser processing apparatus described above is, for example, a moving mechanism that moves the lens itself or a workpiece when cutting an arbitrary shape formed of a closed curve such as a circular shape, a rounded rectangle, or a rounded triangle. Therefore, it is necessary to control a moving mechanism that moves the stage (supporting table) itself.
- FIG. 2 is a diagram illustrating a case where laser processing is performed using a biconvex lens 7B according to an embodiment of the prior art.
- a circular member can be cut into the workpiece 5 by the laser light transmitted through the biconvex lens 7B.
- the laser processing apparatus moves the biconvex lens 7B in a circular shape as shown in FIG.
- the laser beam must be irradiated so as to draw a circle.
- FIG. 4 is a diagram illustrating a case where member processing is performed using a convex cylindrical lens 7C according to an embodiment of the prior art.
- the workpiece 5 is processed by a laser that passes through the convex cylindrical lens 7C.
- the convex cylindrical lens 7C is moved linearly as shown in FIG. 4B.
- the laser processing apparatus irradiates the workpiece 5 with a laser so as to draw a rectangle by moving the convex cylindrical lens 7C.
- the laser processing apparatus cuts the rectangular member by fixing the convex cylindrical lens 7C and moving the stage itself on which the workpiece 5 is placed into a rectangular shape, or moving and rotating the stage.
- the present invention reduces a time for laser processing and enables a reduction in size without mounting an unnecessary movement control device in the laser processing apparatus, and a laser processing apparatus equipped with the lens The purpose is to provide.
- the lens of the present invention is mounted on a laser processing apparatus that processes a member of an arbitrary shape having a closed curve on a workpiece, and a line connecting the apexes of the cylindrical surface of the convex cylindrical lens is a closed curve.
- the convex cylindrical lens is molded so as to form a closed circuit so as to have the same shape as the arbitrary shape made of
- the apex is the highest point of the cylindrical surface of the convex cylindrical lens.
- the same shape as the arbitrary shape consisting of a closed curve with the line connecting the vertices of the cylindrical surface of the convex cylindrical lens means the shape of an arbitrary shape member consisting of a closed curve to be processed by the laser processing apparatus, and the convex cylindrical lens
- the line connecting the vertices of the cylindrical surface is the same or substantially the same shape.
- a line connecting the apexes of the cylindrical surface of the convex cylindrical lens is circular.
- the line connecting the apexes of the cylindrical surface of the convex cylindrical lens may be circular as a whole, and there may be a partial difference due to some unevenness.
- the line connecting the apexes of the cylindrical surface of the convex cylindrical lens may be circular as long as the shape is not necessarily the same. Good.
- Molding means forming a lens. Specifically, it may be molded using a mold, may be molded by polishing, or may be molded by etching.
- “Processing” refers to cutting an arbitrarily shaped member having a closed curve with respect to a workpiece. Specifically, a member having an arbitrary shape including a closed curve is cut. Or the case where it cuts into the shape of the member of the arbitrary shape which consists of a closed curve with respect to a workpiece is mentioned.
- the laser processing apparatus of the present invention processes a member having an arbitrary shape formed of a closed curve on a workpiece, and a line connecting the vertices of the cylindrical surface of the convex cylindrical lens has an arbitrary shape formed of a closed curve.
- a lens formed so that a convex cylindrical lens is closed is mounted so as to have the same shape.
- the lens of the laser processing apparatus of the present invention includes an incident surface portion that receives light irradiated from a light source formed by a cylindrical surface of a convex cylindrical lens, an output surface portion that emits light irradiated from the light source, an incident surface portion, and A hollow lens including an outer surface portion located on the outer surface of the exit surface portion and a hollow surface portion located on the inner surface of the entrance surface portion and the exit surface portion may be used.
- the lens of the laser processing apparatus of the present invention may be provided with a light shielding plate for the hollow portion of the hollow lens.
- Light-shielding plate prevents light from the light source from passing through the lens.
- it may be a film or a thin plate.
- a metal sheet may be used.
- a metal material may be applied to the lens.
- the laser processing apparatus of the present invention may be one that controls the hollow portion of the hollow lens so as not to irradiate the light when the light from the light source is irradiated onto the lens.
- the member having an arbitrary shape formed of the closed curve of the laser processing apparatus of the present invention may be a circular member.
- the lens of the laser processing apparatus emits light from a light source to a substantially half of the lens area on the outer surface side of the entrance surface or the exit surface when the curvature of a predetermined part of an arbitrarily-shaped member having a closed curve is high.
- a light shielding material may be added so as not to guide light.
- a member having an arbitrary shape having a closed curve is processed on a workpiece, and the apex of the cylindrical surface of the convex cylindrical lens is set. Since the lens formed so that the convex cylindrical lens is closed is formed so that the connected line has the same shape as the arbitrary shape consisting of the above closed curve, the arbitrary shape consisting of the closed curve for the workpiece.
- the time for laser processing can be reduced, and the laser processing apparatus itself can be downsized.
- the lens of the present invention and the lens of the laser processing apparatus equipped with the lens are irradiated from the light source and an incident surface portion on which light emitted from the light source of the laser processing apparatus formed by the cylindrical surface of the convex cylindrical lens is incident.
- it is a hollow lens having an exit surface part for emitting light, an outer surface part located on the outer surface of the entrance surface part and the exit surface part, and a hollow surface part located on the inner surface of the entrance surface part and the exit surface part, laser processing should be performed
- the light from the light source can be collected on the region where a member having an arbitrary shape including a closed curve is to be processed.
- the lens of the present invention and the lens of the laser processing apparatus equipped with the lens are regions in which a member having an arbitrary shape consisting of a closed curve to be laser processed is provided when a light shielding material is provided in the hollow portion of the hollow lens.
- the light from the light source can be prevented from being irradiated to the outside.
- the lens of the present invention and the laser processing apparatus equipped with the lens should be laser processed when controlling the light so as not to irradiate the hollow portion of the hollow lens when irradiating the lens with the light from the light source. It is possible to efficiently irradiate the light energy of the light source of the laser processing apparatus to an arbitrarily shaped member having a closed curve.
- the lens of the present invention and the lens of the laser processing apparatus having the lens mounted thereon are approximately half the lens area on the outer surface side of the incident surface or the exit surface when the curvature of a predetermined portion of an arbitrarily shaped member having a closed curve is high.
- a light shielding material is added so that light does not transmit from the light source, the light from the light source can be prevented from being emitted outside the predetermined portion having a high curvature.
- the figure which shows the laser processing apparatus in embodiment of this invention The figure for demonstrating the laser processing by the biconvex lens in conventional embodiment Diagram showing an example of a convex cylindrical lens The figure for demonstrating the laser processing by the convex cylindrical lens in conventional embodiment The figure for demonstrating the circular lens shape
- the top view of the circular lens in the embodiment of the present invention The figure which showed the relationship with the laser which injects / emits the circular lens in embodiment of this invention
- molded in embodiment of this invention The figure which showed the relationship with the light which injects / emits the triangular lens in embodiment of this invention
- FIG. 1 is a diagram showing an outline of a laser processing apparatus 50 according to the present invention.
- the laser processing apparatus 50 cuts a member having an arbitrary shape formed of a closed curve by irradiating a workpiece 5 made of glass with laser light.
- the laser processing apparatus 50 includes a stage 1, a workpiece 5 set on the stage 1, a laser light source 10, a beam expander 15, a reflection mirror 19, a uniformizing apparatus 20, a circular lens 7 ⁇ / b> A, and a control.
- the apparatus 30 is composed of a personal computer 80 (hereinafter referred to as a PC 80).
- the laser light source 10 emits laser light. Further, the beam expander 15 emits the laser light with a diameter increased from the laser light source 10. Further, the homogenizer 20 irradiates the laser beam having an enlarged diameter by multiple reflection and uniformization, and is, for example, a rod lens or a light pipe.
- the circular lens 7 ⁇ / b> A transmits the laser light reflected by the reflection mirror 19.
- the control device 50 controls the output of the light source 10, the position of the stage 1, and the like.
- the specific lens in the embodiment of the present invention is mounted on a laser processing apparatus 50 that processes a member having an arbitrary shape having a closed curve with respect to the workpiece 5, and is formed on the cylindrical surface of the convex cylindrical lens.
- the convex cylindrical lens is molded so as to be closed so that the line connecting the vertices has the same shape as the arbitrary shape formed of the closed curve.
- FIG. 5 is a view for explaining the structure of the circular lens 7A.
- FIG. 5 does not show the manufacturing process of the circular lens 7A, but simply shows what form the circular lens 7A will eventually have.
- the circular lens 7A is molded so that the line connecting the apexes of the cylindrical surface of the convex cylindrical lens shown in FIG.
- the convex cylindrical lens of FIG. 5 (a) is deformed, a semicircle is drawn as shown in FIG. 5 (b), finally a substantially circular shape is drawn as shown in FIG. 5 (c), and finally the cylindrical shape of the convex cylindrical lens is drawn.
- the convex cylindrical lens is closed so that the line connecting the vertices of the surface is arranged in a circle.
- the unique lens (circular lens, triangular lens described later) in the embodiment of the present invention is molded using a mold, for example. Further, it may be molded by polishing or may be molded by etching.
- FIG. 6 is a plan view of the circular lens 7A. As shown in FIG. 6, the line connecting the vertexes of the cylindrical surfaces corresponding to the center points (vertical points of the cylindrical surfaces) of the lines GL perpendicular to the cylindrical surface from the center of the convex cylindrical lens is made circular. A member having a circular shape with a radius r can be processed on the workpiece 5.
- FIG. 7 is a diagram showing the relationship with the laser light L entering and exiting the circular lens 7A.
- the circular lens 7A is formed of a cylindrical surface of a convex cylindrical lens, and includes an incident surface portion 70 that receives light emitted from the light source 10 of the laser processing apparatus 50, an emission surface portion 71 that emits light emitted from the light source, and
- the hollow lens includes an outer surface portion 72 positioned on the outer surface of the incident surface portion 70 and the output surface portion 71, and a hollow surface portion 73 positioned on the inner surface of the incident surface portion 70 and the output surface 71.
- the hollow surface portion 73 is a side surface portion inside the circular lens as shown in FIG.
- the laser processing apparatus 50 causes the laser beam of the light source 10 to be incident on the incident surface portion 70 and to be emitted from the emission surface portion 71 to the circular lens 7A to be mounted. Therefore, the laser processing apparatus 50 can laser process a circular member substantially the same as the radius r of the circular lens 7A shown in FIG. 6 (for example, the length connecting the center line of the line GL from the center of the lens). For example, when the workpiece is glass, the laser processing apparatus 50 can cut a circular member by laser processing. Specifically, the laser processing apparatus 50 can easily cut a circular shape with respect to the protective glass of a mobile phone or a portable electronic device.
- the material to be processed may be not only glass but also plastic, silicon, or other material that becomes a substrate.
- FIG. 8 is a flowchart showing a series of processes in the processing of members of the laser processing apparatus.
- the operator makes initial settings via the PC 80 (step 1). Specifically, the operator inputs instruction information to the PC 80 so as to set the light output level of the light source 10 according to the material of the workpiece 5. Further, the operator inputs instruction information to the PC 80 so as to move the position of the stage 1 on which the workpiece 5 is installed. Although the operator can perform initial setting by inputting instruction information to the PC 80, the PC 80 may perform initial setting by automatic processing to automatically generate instruction information of the PC 80.
- control device 30 controls the laser irradiation timing of the light source 10 or the movement of the stage 1 based on the instruction information instructed by the PC 80 (step 2).
- the light source 10 emits laser light under the control of the control device 30 (step 3).
- the laser light emitted from the light source 10 is enlarged in diameter by the beam expander 15, and the luminance distribution is obtained by the homogenizing device 20. It is made uniform.
- the laser light is reflected by the reflection mirror 19 and enters the circular lens 7A.
- the laser beam incident on the incident surface portion 70 of the circular lens 7A is condensed so as to cut the circular member.
- a light shielding plate N having a light shielding material may be attached to the hollow portion of the lens.
- the light shielding plate N having this light shielding material prevents the laser light from the light source from passing through the lens.
- it may be a film or a thin plate.
- a metal sheet may be used.
- the circular lens 7A may be fitted into the hollow surface portion 73.
- the light shielding plate N may be one in which a metal material is applied to the lens.
- the laser processing apparatus 50 can be controlled not to irradiate the hollow portion of the hollow lens when irradiating the lens with the laser beam of the light source.
- the laser processing apparatus 50 includes a light guide path 35 that guides the laser light reflected from the reflection mirror 19, and an optical fiber 40 for making the laser light incident only on the incident surface portion 70 of the circular lens 7A. Control can be performed so that laser light is incident only on the incident surface portion 70 of the circular lens 7A.
- the laser processing apparatus 50 can be controlled not to irradiate the hollow surface portion 73 of the circular lens 7A with laser light.
- the laser processing device 50 can be controlled so as not to irradiate the laser beam by optimally arranging a reflection mirror and other mirrors so that the laser beam is incident only on the incident surface portion 70 of the circular lens 7A.
- the control device 30 determines whether or not a new circular member should be cut from the workpiece 5 obtained by cutting the circular member.
- the control device 30 moves the workpiece 5 to a desired position for cutting the new circular member by moving the stage 1 ( Step 7).
- the image processing function installed in the PC 80 mounted on the laser processing apparatus 50 can recognize and process the marked position of the workpiece 5, and the control apparatus 30 determines the stage of the stage according to the recognition result. The movement may be performed automatically.
- the control device 50 determines whether or not to cut a member having a different shape.
- the lens can be changed. Then, it can be changed to a lens other than the circular lens 7A (step 8).
- a member having a different shape is not cut from the workpiece 5 (step 6; NO)
- the process is completed.
- the laser processing device 50 includes a lens conversion device (not shown), and may be configured to be changed to a lens other than the circular lens 7A as described above.
- the laser processing apparatus 50 may include a triangular lens 7D as shown in FIG.
- FIG. 12 is a diagram for explaining the structure of the triangular lens 7D.
- the triangular lens 7D is a triangular member formed of a closed curve.
- the triangular lens 7D is formed such that a line CL connecting the apexes of the cylindrical surface of the convex cylindrical lens is arranged in a triangle.
- a line CL connecting the vertices of the cylindrical surface corresponding to the center point of each line GL perpendicular to the cylindrical surface from the center of the convex cylindrical lens (the vertex of the cylindrical surface) is formed into a triangle.
- a convex cylindrical lens is formed as a closed circuit.
- FIG. 12 is a plan view of the triangular lens 7D.
- FIG. 13 is a diagram showing a relationship with laser light entering and exiting the triangular lens 7D.
- the triangular lens 7D includes an incident surface portion 70 on which laser light emitted from the light source 10 of the laser processing apparatus 50 formed by the cylindrical surface of the convex cylindrical lens is incident, and an emission surface portion 71 that emits light emitted from the light source.
- the hollow lens includes an outer surface portion 72 positioned on the outer surface of the incident surface portion 70 and the output surface portion 71, and a hollow surface portion 73 positioned on the inner surface of the incident surface portion 70 and the output surface 71.
- the laser processing apparatus 50 condenses the light by transmitting the laser light from the light source 10 through the incident surface portion 70 of the triangular lens 7D and through the output surface portion 71, the line of the triangular lens 7D shown in FIG.
- the same triangular member as CL can be laser processed.
- the laser processing apparatus 50 can cut a triangular member by laser processing.
- the laser processing apparatus 50 can easily cut a triangular shape with respect to a protective glass of a mobile phone or a portable electronic device.
- the lens of the laser processing device 50 emits light from a light source with respect to the region of the predetermined part located on the outer surface part 72 side of the incident surface part 70 or the emission surface part 71.
- a light blocking material can be added to prevent light from being guided. For example, as shown in FIG. 14, when the curvature of three points is high as in the corner of the triangular lens 7 ⁇ / b> D, a desired portion of a high curvature portion located on the outer surface portion 72 side on the incident surface portion 70 or the emission surface portion 71 is desired.
- a light shielding material M is added to the region so that light is not guided from the light source 10.
- the light shielding material M can prevent the light from the light source 10 from being emitted from the lens.
- a light shielding material may be added to a region of a portion having a high curvature of a star-shaped lens, a heart-shaped lens, an S-shaped lens, or other lenses.
- the triangular lens 7D may include a light shielding material M on the hollow surface portion 73, similarly to the circular lens 7A.
- the laser processing device 50 includes a lens conversion device (not shown), and can change a triangular lens 7D to cut a triangular member with respect to the workpiece 5. Further, the laser processing device 50 may be a star lens, a heart lens, an S lens, or a lens having other shapes besides the circular lens and the triangular lens described above.
- the laser processing apparatus may include only the circular lens 7A or the triangular lens 7D without including a lens conversion device (not shown).
- the line connecting the vertices of the cylindrical surface of the convex cylindrical lens has the same shape as an arbitrary shape formed of a closed curve. Since a lens formed so that a closed cylindrical lens is formed in a closed circuit is used, the time for laser processing is reduced when a member having an arbitrary shape having a closed curve is laser processed on a workpiece. Further, the laser processing apparatus 50 does not need to provide a mechanism for rotating and moving the lens or a mechanism for rotating and moving the stage 1 when laser processing an arbitrarily shaped member having a closed curve. The size can be reduced.
- the lens in the embodiment of the present invention and the lens of the laser processing apparatus 50 on which the lens is mounted include an incident surface portion 70 on which light irradiated from the light source of the laser processing apparatus 50 formed by the cylindrical surface of the convex cylindrical lens is incident. , An exit surface portion 71 that emits light emitted from the light source, an entrance surface portion 70 and an outer surface portion 72 located on the outside surface of the exit surface portion 71, and a hollow surface portion 73 located on the inside surface of the entrance surface portion 70 and the exit surface portion 71.
- the hollow lens is provided, the light from the light source can be focused on a region where an arbitrarily shaped member having a closed curve to be laser processed is to be processed.
- the lens of the embodiment of the present invention and the lens of the laser processing apparatus 50 equipped with the lens are formed of a member having an arbitrary shape including a closed curve to be laser processed when a light shielding plate is provided for the hollow portion of the hollow lens.
- the light from the light source can be prevented from being irradiated outside the region to be processed.
- the lens in the embodiment of the present invention and the laser processing apparatus 50 equipped with the lens when irradiating the lens with the light of the light source, when controlling so that the hollow portion of the hollow lens is not irradiated with the light,
- the light energy of the light source of a laser processing apparatus can be efficiently irradiated with respect to the member of the arbitrary shape which consists of a closed curve which should be laser processed.
- the lens of the embodiment of the present invention and the lens of the laser processing apparatus 50 on which the lens is mounted are positioned on the outer surface portion side of the incident surface portion or the output surface portion when the curvature of a predetermined portion of the member having an arbitrary shape formed of a closed curve is high.
- a light shielding material is added to a predetermined region so that light is not guided from the light source, the light from the light source can be prevented from being condensed outside the predetermined region having a high curvature.
- the curvature of three points is high, such as the corner of the triangular lens 7D, a desired portion of the high curvature portion located on the outer surface portion 72 side on the incident surface portion 70 or the emission surface portion 71 is desired.
- a light shielding material M is added to the region so that light is not guided from the light source.
- the light shielding material M can prevent the light from the light source 10 from being emitted from the lens.
- a light shielding material may be added to a region of a portion having a high curvature of a star-shaped lens, a heart-shaped lens, an S-shaped lens, or other lenses.
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Toxicology (AREA)
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Abstract
Description
そこで、本発明は、上記事情に鑑み、レーザ加工する時間を削減し、かつレーザ加工装置に不要な移動制御装置を搭載することなく小型化を可能とするレンズおよびそのレンズを搭載したレーザ加工装置を提供することを目的とする。
GL シリンドリカル面の線
L レーザ光
M 遮光材
N 遮光板
r 半径(レンズ)
R 半径(集光した光)
1 ステージ
5 被加工材
7A 円形レンズ
7B 両凸レンズ
7C 凸型シリンドリカルレンズ
7D 三角レンズ
10 光源
15 ビームエキスパンダ
19 反射ミラー
20 均一化装置
30 制御装置
35 導光路
40 光ファイバー
50 レーザ加工装置
70 入射面部
71 出射面部
72 外側面部
73 中空面部
Claims (8)
- 被加工材に対して、閉曲線からなる任意形状の部材を加工するレーザ加工装置に搭載されるレンズにおいて、
凸型シリンドリカルレンズのシリンドリカル面の頂点を結んだ線が前記閉曲線からなる任意形状と同一の形となるように、前記凸型シリンドリカルレンズを閉路形成されるように成形されたことを特徴とするレンズ。 - 被加工材に対して、閉曲線からなる任意形状の部材を加工するレーザ加工装置において、
凸型シリンドリカルレンズのシリンドリカル面の頂点を結んだ線が前記閉曲線からなる任意形状と同一の形となるように、前記凸型シリンドリカルレンズを閉路形成されるように成形されたレンズを搭載していることを特徴とするレーザ加工装置。 - 前記レンズは、
前記凸型シリンドリカルレンズのシリンドリカル面で形成される前記レーザ加工装置の光源から照射される光を入射する入射面部と、
前記光源から照射される光を出射する出射面部と、
前記入射面部及び前記出射面部の外側面に位置する外側面部と、
前記入射面部及び前記出射面部の内側面に位置する中空面部を備える中空レンズであることを特徴とする請求項2記載のレーザ加工装置。 - 前記レンズは、前記中空レンズの中空部分に、遮光板を設けることを特徴とする請求項3記載のレーザ加工装置。
- 前記レーザ加工装置は、前記光源の光を前記レンズに対して照射するに際し、前記中空レンズの中空部分には光を照射しないように制御することを特徴とする請求項3記載のレーザ加工装置。
- 前記閉曲線からなる任意形状の部材は、円形の部材であることを特徴とする請求項2から5いずれか1項記載のレーザ加工装置。
- 前記レンズは、前記閉曲線からなる任意形状の部材の所定部位の曲率が高い場合に際し、前記入射面部または前記出射面部における前記外側面部側に位置する前記所定部位の領域に対して、前記光源から光が導光しないよう、遮光材をレンズに付加することを特徴とする請求項3から5いずれか1項記載のレーザ加工装置。
- 前記レーザ加工装置は、被加工材に対して、閉曲線からなる任意形状の部材を切断することを特徴とする請求項2から7いずれか1項記載のレーザ加工装置。
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US14/116,602 US9310531B2 (en) | 2011-05-11 | 2012-05-09 | Lens and laser processing apparatus equipped with the lens |
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KR1020137032665A KR101993128B1 (ko) | 2011-05-11 | 2012-05-09 | 렌즈 및 그 렌즈를 탑재한 레이저 가공장치 |
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US9645585B2 (en) | 2009-01-15 | 2017-05-09 | Robertshaw Controls Company | Variable flow digital gas valve |
JP5923765B2 (ja) * | 2011-10-07 | 2016-05-25 | 株式会社ブイ・テクノロジー | ガラス基板のレーザ加工装置 |
JP6161188B2 (ja) * | 2013-02-05 | 2017-07-12 | 株式会社ブイ・テクノロジー | レーザ加工装置、レーザ加工方法 |
KR102232168B1 (ko) * | 2014-11-25 | 2021-03-29 | 삼성디스플레이 주식회사 | 기판 커팅 장치 |
CN107771299B (zh) * | 2015-06-23 | 2021-11-19 | 特拉迪欧德公司 | 用于改变激光输送系统中的光束参数乘积的光学元件布置 |
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CN111745306B (zh) * | 2020-06-17 | 2021-03-26 | 同济大学 | 一种激光切割五轴联动运行控制方法 |
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US20140347744A1 (en) | 2014-11-27 |
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CN103619527A (zh) | 2014-03-05 |
TW201244863A (en) | 2012-11-16 |
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