WO2010007852A1 - レーザ加工装置及びその加工方法 - Google Patents
レーザ加工装置及びその加工方法 Download PDFInfo
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- WO2010007852A1 WO2010007852A1 PCT/JP2009/061110 JP2009061110W WO2010007852A1 WO 2010007852 A1 WO2010007852 A1 WO 2010007852A1 JP 2009061110 W JP2009061110 W JP 2009061110W WO 2010007852 A1 WO2010007852 A1 WO 2010007852A1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
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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
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95684—Patterns showing highly reflecting parts, e.g. metallic elements
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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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/40—Semiconductor devices
Definitions
- the present invention relates to a laser processing apparatus and a processing method thereof.
- Patent Document 1 determines the quality of a bonding state of a laser light source that emits bonding light to a bonding portion between a lead and a bonding land of a substrate, a laser light source that emits determination light, and the bonding portion.
- a determination device and a CCD camera for recognizing lead defects are provided. Then, after irradiating the bonding portion with the bonding light, the bonding portion is irradiated with the determination light, the reflected light and the radiant light are received by the determination device, and the bonding state is judged to be good, and further, the defect is confirmed via the CCD camera.
- the bonding state is judged to be good, and further, the defect is confirmed via the CCD camera.
- An object of the present invention is to provide a laser processing apparatus and a laser processing method capable of improving processing accuracy.
- the laser processing apparatus is a laser processing apparatus that scans and processes an object to be processed with processing light, and includes a first light emitting unit that emits processing light, and processing light emitted from the first light emitting unit.
- a first light guide that guides light to the object to be processed, a second light-emitting unit that emits observation light for observing the object to be processed, and observation light emitted from the second light-emitting part
- a control unit for controlling the light emission state of the first light emitting unit based on the result detected by the detection unit, and the second light guide is in at least two groups.
- the observation light emitted from the second light emitting unit is divided into groups and guided to the object to be processed.
- the second light guide is divided into at least two groups, and the observation light emitted from the second light emitting unit is guided to the processing object for each group. Therefore, by shifting the irradiation timing of the observation light emitted from each group, the object irradiated with the observation light emitted for each group can be specified.
- the position of the specified object corresponds to the arrangement position of the group, the position of the object specified based on the arrangement position of the group can be easily grasped. Therefore, the specified object can be processed erroneously by controlling the irradiation power of the processing light according to the type of the specified object, or adjusting the irradiation time of the processing light according to the position of the specified object. Can be reliably prevented. As a result, it is possible to improve processing accuracy.
- the second light guides are divided into four groups, and the second light guides divided into four groups at the emission end of the first light guide are: It is preferable that the first light guide is disposed on the front, rear, left and right with respect to the scanning direction of the processing light emitted from the first light guide so as to surround the first light guide. In this case, the objects arranged at the front, rear, left and right positions of the processing area can be specified.
- the second light guides divided into four groups guide the observation light emitted from the second light emitting unit to the processing object in order. is there. In this case, it is possible to easily specify an object placed at the front / rear / right / left positions of the processing region.
- the laser processing apparatus is a laser processing apparatus that scans and processes an object to be processed with processing light, and includes a first light emitting unit that emits processing light, and processing light emitted from the first light emitting unit.
- a first light guide that guides light to the object to be processed, a second light-emitting unit that emits observation light for observing the object to be processed, and observation light emitted from the second light-emitting part
- a control unit that controls a light emission state of the first light emitting unit based on a result detected by the detection unit, and the third light guide body is arranged in at least two groups. It is characterized by guiding light of a plurality of wavelengths which is divided and generated in a processing object for each group.
- the third light guide is divided into at least two groups and guides light of a plurality of wavelengths generated in the processing target for each group.
- the objects corresponding to the third light guides in each group can be specified.
- the position of the specified object corresponds to the arrangement position of the group, the position of the object specified based on the arrangement position of the group can be easily grasped. Therefore, the specified object can be processed erroneously by controlling the irradiation power of the processing light according to the type of the specified object, or adjusting the irradiation time of the processing light according to the position of the specified object. Can be reliably prevented. As a result, it is possible to improve processing accuracy.
- the third light guides are divided into four groups, and the third light guides divided into four groups at the emission end of the first light guide are: It is preferable that the first light guide is disposed on the front, rear, left and right with respect to the scanning direction of the processing light emitted from the first light guide so as to surround the first light guide. In this case, the objects arranged at the front, rear, left and right positions of the processing area can be specified.
- the third light guides divided into four groups sequentially guide light having a plurality of wavelengths generated in the processing object. In this case, it is possible to easily specify an object placed at the front / rear / right / left positions of the processing region.
- the detection unit includes a detection element corresponding to each third light guide group. In this case, the light detection accuracy can be increased.
- the detection unit includes one detection element and an optical path changing unit for causing the light guided by the third light guide to enter the detection element. is there.
- the configuration of the detection unit can be simplified, and the overall cost of the apparatus can be reduced.
- the laser processing method is a laser processing method using the above-described laser processing apparatus, and irradiates the processing object with observation light for each group using each group of the second light guide.
- the second step of detecting light of a plurality of wavelengths generated in the object to be processed, and specifying the irradiation target based on the characteristics of the detected light, and processing by controlling the processing light based on the result of specifying the irradiation target And a third step of processing the object.
- the laser processing method of the present invention by using each group of the second light guides and irradiating the processing object with the observation light for each group, the types of objects arranged around the processing region And the position can be easily identified. Then, the specified object is erroneously processed by controlling the irradiation power of the processing light according to the type of the specified object, or adjusting the irradiation time of the processing light according to the position of the specified object. This can be surely prevented. As a result, it is possible to improve processing accuracy.
- the observation object in the first step, is irradiated with the observation light using only the second light guide group disposed in front of the processing light in the scanning direction. Is preferred. In this case, since only the object arranged in front of the scanning direction of the processing light is specified, the processing speed can be increased.
- a laser processing method is a laser processing method using the above-described laser processing apparatus, and uses each group of a first step and a third light guide for irradiating a processing object with observation light.
- a third step of processing the object is a laser processing method using the above-described laser processing apparatus, and uses each group of a first step and a third light guide for irradiating a processing object with observation light.
- an object disposed around the processing region by detecting light of a plurality of wavelengths generated in the processing object for each group using each group of the third light guide. Can be easily identified.
- the specified object is erroneously processed by controlling the irradiation power of the processing light according to the type of the specified object, or adjusting the irradiation time of the processing light according to the position of the specified object. This can be surely prevented. As a result, it is possible to improve processing accuracy.
- the second step light of a plurality of wavelengths generated in the processing object is detected using only the third light guide group arranged in front of the processing light in the scanning direction. It is preferable to do. In this case, since only the object arranged in front of the scanning direction of the processing light is specified, the processing speed can be increased.
- a laser processing apparatus and a laser processing method capable of improving processing accuracy are provided.
- FIG. 1 is a schematic diagram showing the configuration of the laser processing apparatus according to the first embodiment.
- FIG. 2A is a cross-sectional view showing bundle fibers
- FIG. 2B is a diagram for explaining grouping of optical fibers.
- FIG. 3 is a diagram showing the irradiation timing of observation light emitted from each group of optical fibers.
- FIG. 4 is a flowchart showing a control process of the laser machining apparatus according to the first embodiment.
- FIG. 5 is a flowchart showing a control process of the laser machining apparatus according to the first embodiment.
- FIG. 6 is a schematic view showing the configuration of the laser processing apparatus according to the second embodiment.
- FIG. 7 is a flowchart showing a control process of the laser machining apparatus according to the second embodiment.
- FIG. 8 is a flowchart showing a control process of the laser machining apparatus according to the second embodiment.
- FIG. 9 is a schematic view showing a modification of the laser processing apparatus according to the second embodiment.
- FIG. 1 is a schematic diagram showing the configuration of the laser processing apparatus according to the first embodiment.
- the laser processing apparatus 1 is an apparatus used for processing an electronic component, and includes a processing light source (first light emitting unit) 3 that emits processing light for processing the electronic component (processing object) 2, and an electronic device.
- An observation light emitting unit (second light emitting unit) 4 that emits observation light for observing the component 2, a detection unit 5 that detects light of a plurality of wavelengths generated in the electronic component 2, and a processing light emitting unit 3
- the control part 31 which controls the light emission state is provided.
- the processing light source 3 includes a semiconductor laser element that outputs laser light having a specific wavelength of 408 nm.
- the processing light emitted from the processing light source 3 is guided to the electronic component 2 by an optical fiber (first light guide) 6 optically connected to the processing light source 3.
- the observation light emitting section 4 emits observation light for observing the electronic component 2, has two types of light sources having different center wavelengths, and outputs four first light beams having a wavelength of 445 nm.
- the observation light source 7 includes four observation light sources 8 that output laser light having a wavelength of 660 nm.
- the four first observation light sources 7 are optically connected to four optical fibers (second light guides) 9.
- the four second observation light sources 8 are optically connected to four optical fibers (second light guides) 10.
- the optical fibers 9 and 10 are further connected to the multiplexing unit 11.
- the multiplexing unit 11 multiplexes the light having a wavelength of 445 nm guided by the optical fiber 9 and the light having a wavelength of 660 nm guided by the optical fiber 10 on a one-to-one basis.
- the detection unit 5 includes a first detection element 13 and a second detection element 14 having different light receiving sensitivities depending on wavelengths.
- the first detection element 13 has high light receiving sensitivity with respect to light having a wavelength of 445 nm
- the second detection element 14 has high light receiving sensitivity with respect to light having a wavelength of 660 nm.
- the first detection element 13 and the second detection element 14 are optically connected to optical fibers (third light guides) 15 and 16, respectively, and have different wavelengths guided by the optical fibers 15 and 16. The light intensity is detected, and the detection result is output to the control unit 31.
- the detection unit 5 includes an optical filter that transmits or reflects light having different center wavelengths, and a plurality of detections that respectively detect the intensities of light having different center wavelengths that are transmitted through or reflected by the optical filters.
- An element may be provided.
- the detection unit 5 may include an optical path changing unit that switches or switches the optical path from the third light guide to the detection element according to the wavelength, and a detection element corresponding to the light traveling through each optical path. Good.
- the control unit 31 controls the light emission state of the processing light source 3 based on the results detected by the first detection element 13 and the second detection element 14. Further, the control unit 31 calculates the ratio between the light intensity at the wavelength 445 nm and the light intensity at the wavelength 660 nm detected by the first detection element 13 and the second detection element 14, and calculates the ratio between the calculated value and the determination threshold value. By comparing, the object on the electronic component 2 is specified.
- the optical fiber 6 and the optical fiber 12 are bundled to form a bundle fiber 17.
- the laser processing apparatus 1 can be miniaturized and the apparatus can be easily operated. It is also preferable to install a condenser lens (not shown) at the tip of the bundle fiber. The working distance from the workpiece can be increased, and the apparatus can be easily operated.
- FIG. 2A is a cross-sectional view showing a bundle fiber
- FIG. 2B is a diagram for explaining grouping of optical fibers.
- the bundle fiber 17 is formed in a hexagonal cross section, and seven optical fibers (first light guides) 18 are provided at the center thereof, and around the optical fiber 18.
- the 30 optical fibers (second light guides) 19 are arranged.
- the seven optical fibers 18 constitute an optical fiber 6 for guiding processing light
- the thirty optical fibers 19 constitute an optical fiber 12 for guiding observation light.
- the 30 optical fibers 19 correspond to the four optical fibers 12 and are divided into four groups.
- the first group is composed of eight optical fibers 19
- the second group is composed of seven optical fibers 19
- the third group is composed of eight optical fibers 19
- the fourth group is composed of seven optical fibers.
- a fiber 19 is used.
- the optical fibers 19 divided into four groups are formed so that the observation light can be guided to the electronic component 2 for each group.
- the optical fibers 19 divided into the four groups receive the control signal from the control unit 31 and guide the observation light in the order of the first, second, third, and fourth groups.
- FIG. 3 is a diagram illustrating irradiation timing of observation light emitted from each group of optical fibers.
- a white circle represents a state where the observation light emitted from the optical fiber 19 is irradiated
- a black circle represents a state where the observation light is not irradiated. .
- an arrow F indicates the scanning direction of the processing light. Therefore, the first, second, third, and fourth groups of optical fibers 19 are arranged in the front, rear, left, and right sides in the scanning direction F, respectively.
- FIG. 3A while scanning the electronic component 2 with the processing light guided by the optical fiber 18, only the observation light emitted from the first group of optical fibers 19 is predetermined.
- the electronic component 2 is irradiated with time.
- irradiation of the observation light emitted from the first group of optical fibers 19 is stopped, and only the observation light emitted from the second group of optical fibers 19 is irradiated onto the electronic component 2 at a predetermined time (FIG. 3 (b)).
- the irradiation of the observation light emitted from the second group of optical fibers 19 is stopped, and only the observation light emitted from the third group of optical fibers 19 is irradiated to the electronic component 2 at a predetermined time (see FIG. 3 (c)).
- irradiation of the observation light emitted from the third group of optical fibers 19 is stopped, and only the observation light emitted from the fourth group of optical fibers 19 is irradiated to the electronic component 2 at a predetermined time (see FIG. 3 (d)).
- Such an operation is repeated until the end of processing.
- the optical fibers 19 are divided into four groups, and the observation light emitted from the observation light emitting unit 4 is guided to the electronic component 2 for each group.
- an object for example, gold plating is applied on the electronic component 2 irradiated by the observation light emitted for each group.
- the position of the specified object corresponds to the arrangement position of the group of the optical fibers 19, the position of the specified object can be easily grasped based on the arrangement position of the group. Therefore, it becomes possible to control the irradiation power of the processing light according to the specified type of the object, or to adjust the irradiation time of the processing light according to the position of the specified object. For example, when the processing light is scanned and the terminals plated with gold are joined with solder (main component: tin), the boundary between the solder and the gold-plated terminal can be specified to increase the irradiation power. In this way, it is possible to prevent the electronic component 2 from being heated excessively, and it is possible to improve processing accuracy and quality.
- FIG. 4 is a flowchart showing a control process of the laser machining apparatus according to the first embodiment.
- the control process in FIG. 4 is repeatedly executed by the control unit 31 at a predetermined cycle.
- detection of light generated in the electronic component 2 by irradiation of observation light is performed (S13).
- light of a plurality of wavelengths generated in the electronic component 2 is detected via the optical fibers 15 and 16 and the detection elements 13 and 14, and an adjacent object adjacent to the processing region is specified by the characteristics of the detected light.
- the optical fibers 19 are divided into four groups, if the reference value n is 4, the light beams are emitted from the first, second, third, and fourth groups of optical fibers 19. Irradiation of observation light is sequentially performed.
- the control unit 31 transmits a control signal for reducing the irradiation power to the processing light source 3, and the processing light source 3 receives the control signal and weakens the power of the generated processing light.
- the control unit 31 transmits a control signal for increasing the irradiation power to the processing light source 3, and the processing light source 3 receives the control signal and increases the power of the generated processing light. Thereby, the processing of the electronic component 2 is performed. Then, when the processes of S17 and S18 are completed, the process moves to the next point and this process is repeated, and then a series of control is terminated.
- FIG. 5 is a flowchart showing a control process of the laser machining apparatus according to the first embodiment.
- the feature of the control processing in FIG. 5 is that the observation light is irradiated using only the group of optical fibers 19 arranged in front of the processing light in the scanning direction. This control process is repeatedly executed by the control unit 31 at a predetermined cycle.
- the process proceeds to S25 without irradiating the observation light emitted from the optical fiber 19 of the group.
- irradiation with the observation light emitted from the optical fiber 19 of the group is performed (S23).
- the light generated in the electronic component 2 by the irradiation of the observation light is detected (S24).
- light of a plurality of wavelengths generated in the electronic component 2 is detected via the optical fibers 15 and 16 and the detection elements 13 and 14, and the adjacent object is specified by the detected light characteristics.
- the control unit 31 transmits a control signal for reducing the irradiation power to the processing light source 3, and the processing light source 3 receives the control signal and weakens the power of the generated processing light.
- the control unit 31 transmits a control signal for increasing the irradiation power to the processing light source 3, and the processing light source 3 receives the control signal and increases the power of the generated processing light. Thereby, the processing of the electronic component 2 is performed. Then, when the processes of S28 and S29 are finished, a series of control is finished. According to such a laser processing method, since only the adjacent object ahead in the scanning direction of the processing light is specified, the processing speed can be increased.
- FIG. 6 is a schematic view showing the configuration of the laser processing apparatus according to the second embodiment.
- the difference between the laser processing apparatus 20 according to the second embodiment and the first embodiment is that the optical fibers (third light guides) 24 that guide light generated in the electronic component 2 are divided into four groups. It is. Since other configurations are the same as those of the laser processing apparatus 1 described above, the same reference numerals are given and redundant description is omitted.
- the detection unit 21 includes four detection elements 23.
- the detection element 23 detects light having a plurality of wavelengths including a wavelength of 445 nm and a wavelength of 660 nm.
- the four detection elements 23 are optically connected to four optical fibers 24.
- the laser processing apparatus 20 includes one observation light source (second light emitting unit) 22.
- the observation light source 22 is composed of a halogen lamp that emits white light.
- the observation light emitted from the observation light source 22 is applied to the electronic component 2 via the optical fiber (second light guide) 25.
- the optical fiber 6 and the optical fiber 24 are bundled at the emission end of the optical fiber 6 to form a bundle fiber 30.
- the bundle fiber 30 has the same configuration as the bundle fiber 17 according to the first embodiment. That is, the optical fibers 24 that guide the light generated in the electronic component 2 are divided into four groups, and are arranged in front, rear, left, and right with respect to the scanning direction of the processing light so as to surround the optical fiber 6 that guides the processing light. Has been. It is also preferable to install a condenser lens (not shown) at the tip of the bundle fiber. The working distance from the workpiece can be increased, and the apparatus can be easily operated.
- the optical fibers 24 divided into these four groups are formed so as to be able to sequentially guide light of a plurality of wavelengths generated in the electronic component 2.
- an openable / closable mask corresponding to each group is provided between the optical fiber 24 divided into four groups and the detection element 23, and light guided by the optical fiber 24 by opening / closing the mask. Are sequentially incident on or shielded from the detection element 23.
- the optical fibers 24 are divided into four groups, and light of a plurality of wavelengths generated in the electronic component 2 is guided for each group. Therefore, the light guide timing of each group is shifted.
- objects for example, terminals plated with gold, terminals plated with tin, and glass epoxy substrates
- corresponding to the optical fibers 24 of each group can be specified.
- the position of the identified object corresponds to the arrangement position of the group of the optical fibers 24, the position of the identified object can be easily grasped based on the arrangement position of the group. Therefore, it becomes possible to control the irradiation power of the processing light according to the specified type of the object, or to adjust the irradiation time of the processing light according to the position of the specified object. For example, when the processing light is scanned to join the gold-plated terminals with solder (main component: tin), it is possible to specify the boundary between the solder and the gold-plated terminal and increase the irradiation power. . In this way, it is possible to prevent the electronic component 2 from being overheated, and it is possible to improve processing accuracy and quality.
- solder main component: tin
- FIG. 7 is a flowchart showing a control process of the laser machining apparatus according to the second embodiment.
- the control process in FIG. 7 is repeatedly executed by the control unit 31 at a predetermined cycle.
- the number of groups i is set to 1 (S31), and observation light emitted from the optical fiber 25 is irradiated onto the electronic component 2 (S32).
- detection of light generated in the electronic component 2 by irradiation of observation light is performed (S33).
- the optical fibers 24 are divided into four groups, for example, if the reference value n is 4, the light transmitted through the first, second, third, and fourth groups of optical fibers 24 will be described. Detection is performed in order.
- the control unit 31 transmits a control signal for reducing the irradiation power to the processing light source 3, and the processing light source 3 receives the control signal and weakens the power of the generated processing light.
- the control unit 31 transmits a control signal for increasing the irradiation power to the processing light source 3, and the processing light source 3 receives the control signal and increases the power of the generated processing light. Thereby, the processing of the electronic component 2 is performed. Then, when the processes of S37 and S38 are finished, the process moves to the next point and repeats this process, and then a series of control is finished.
- FIG. 8 is a flowchart showing a control process of the laser machining apparatus according to the second embodiment.
- the feature of the control processing in FIG. 8 is that light generated in the electronic component 2 is detected only through the group of optical fibers 24 arranged in front of the processing light in the scanning direction. This control process is repeatedly executed by the control unit 31 at a predetermined cycle.
- the number of groups i is set to 1 (S41), and observation light emitted from the optical fiber 25 is irradiated onto the electronic component 2 (S42).
- it is determined whether or not the position of the i-th (i 1) group is ahead in the scanning direction of the processing light (S43). If it is determined that the position of the i-th group is not in front of the scanning direction, the process proceeds to S45 without detecting light through the optical fiber 24 of that group.
- the light generated in the electronic component 2 is detected through the optical fiber 24 of the group (S44). And an adjacent target object is specified based on the characteristic of the detected light.
- the control unit 31 transmits a control signal for reducing the irradiation power to the processing light source 3, and the processing light source 3 receives the control signal and weakens the power of the generated processing light.
- the control unit 31 transmits a control signal for increasing the irradiation power to the processing light source 3, and the processing light source 3 receives the control signal and increases the power of the generated processing light. Thereby, the processing of the electronic component 2 is performed. Then, when the processes of S48 and S49 are finished, the series of control is finished. According to such a laser processing method, since only the adjacent object ahead in the scanning direction of the processing light is specified, the processing speed can be increased.
- FIG. 9 is a schematic view showing a modification of the laser processing apparatus according to the second embodiment.
- the detection unit 27 of the laser processing device 26 includes one detection element 28 and a mirror (optical path) that switches the optical path so that the light guided by the optical fiber 24 is incident on the detection element 28.
- Change means 29 The mirror 29 is rotatably provided, and the light guided by the four groups of optical fibers 24 enters the detection element 28 in order.
- the detection element 28 can detect light having a plurality of wavelengths including a wavelength of 445 nm and a wavelength of 660 nm.
- the laser processing apparatus 26 having such a configuration can obtain the same effects as the laser processing apparatus 20 according to the second embodiment, can simplify the configuration of the detection unit 27, and can reduce the cost of the entire apparatus. It becomes possible to plan.
- the processing light and the observation light may have the same wavelength.
- the laser processing apparatus and the processing method used for electronic component processing have been described.
- the laser processing apparatus and the laser processing method according to the present invention are not limited to the processing of electronic components, and are used for dental treatment and the like. Also applies.
Abstract
Description
図1は第1実施形態に係るレーザ加工装置の構成を示す概略図である。レーザ加工装置1は、電子部品加工に用いられる装置であって、電子部品(加工対象物)2を加工するための加工用光を発する加工用光光源(第1の発光部)3と、電子部品2を観察するための観察用光を発する観察用光発光部(第2の発光部)4と、電子部品2で生じる複数波長の光を検出する検出部5と、加工用光発光部3の発光状態を制御する制御部31とを備えている。
次に、第2実施形態に係るレーザ加工装置20について説明する。図6は第2実施形態に係るレーザ加工装置の構成を示す概略図である。第2実施形態に係るレーザ加工装置20と第1実施形態との相違点は、電子部品2で生じる光を導光する光ファイバ(第3の導光体)24が4つのグループに分けられることである。その他の構成は、上述したレーザ加工装置1と同等であるため、同一符号を付して重複説明を省略する。
次に、第2実施形態に係るレーザ加工装置20の変形例について説明する。図9は第2実施形態に係るレーザ加工装置の変形例を示す概略図である。図9に示す変形例では、レーザ加工装置26の検出部27は、1つの検出素子28と、光ファイバ24により導光された光を検出素子28に入射させるように、光路を切り替えるミラー(光路変更手段)29とを含んで構成されている。ミラー29は、回転自由に設けられ、4つのグループの光ファイバ24により導光されてき光を順番に検出素子28に入射させる。検出素子28は、波長445nm及び波長660nmを含む複数波長の光を検出可能なものである。
2 電子部品(加工対象物)
3 加工用光光源(第1の発光部)
4 観察用光発光部(第2の発光部)
5,21,27 検出部
6,18 光ファイバ(第1の導光体)
9,10,12,19,25 光ファイバ(第2の導光体)
15,16,24 光ファイバ(第3の導光体)
22 観察用光光源(第2の発光部)
29 ミラー(光路変更手段)
31 制御部。
Claims (12)
- 加工対象物を加工用光で走査し加工するレーザ加工装置において、
加工用光を発する第1の発光部と、
前記第1の発光部から発せられる加工用光を加工対象物へと導光する第1の導光体と、
加工対象物を観察するための観察用光を発する第2の発光部と、
前記第2の発光部から発せられる観察用光を加工対象物へと導光する複数の第2の導光体と、
加工対象物で生じる複数波長の光を導光する第3の導光体と、
前記第3の導光体により導光される複数波長の光を検出する検出部と、
前記検出部により検出された結果に基づき、前記第1の発光部の発光状態を制御する制御部と、を備え、
前記第2の導光体は、少なくとも2つのグループに分けられ、且つグループ毎に前記第2の発光部から発せられる観察用光を加工対象物へと導光することを特徴とするレーザ加工装置。 - 前記第2の導光体は、4つのグループに分けられ、
前記第1の導光体の出射端において、4つのグループに分けられた前記第2の導光体は、前記第1の導光体を取り囲むように、前記第1の導光体から出射される加工用光の走査方向に対し前後左右に配置されていることを特徴とする請求項1に記載のレーザ加工装置。 - 4つのグループに分けられた前記第2の導光体は、前記第2の発光部から発せられる観察用光を順番に加工対象物へと導光することを特徴とする請求項2に記載のレーザ加工装置。
- 加工対象物を加工用光で走査し加工するレーザ加工装置において、
加工用光を発する第1の発光部と、
前記第1の発光部から発せられる加工用光を加工対象物へと導光する第1の導光体と、
加工対象物を観察するための観察用光を発する第2の発光部と、
前記第2の発光部から発せられる観察用光を加工対象物へと導光する第2の導光体と、
加工対象物で生じる複数波長の光を導光する複数の第3の導光体と、
前記第3の導光体により導光される複数波長の光を検出する検出部と、
前記検出部により検出された結果に基づき、前記第1の発光部の発光状態を制御する制御部と、を備え、
前記第3の導光体は、少なくとも2つのグループに分けられ、且つグループ毎に加工対象物で生じる複数波長の光を導光することを特徴とするレーザ加工装置。 - 前記第3の導光体は、4つのグループに分けられ、
前記第1の導光体の出射端において、4つのグループに分けられた前記第3の導光体は、前記第1の導光体を取り囲むように、前記第1の導光体から出射される加工用光の走査方向に対し前後左右に配置されていることを特徴とする請求項4に記載のレーザ加工装置。 - 4つのグループに分けられた前記第3の導光体は、加工対象物で生じる複数波長の光を順番に導光することを特徴とする請求項5に記載のレーザ加工装置。
- 前記検出部は、前記第3の導光体のグループ毎に対応する検出素子を含むことを特徴とする請求項4~6のいずれか一項に記載のレーザ加工装置。
- 前記検出部は、1つの検出素子と、前記第3の導光体により導光される光を前記検出素子に入射させるための光路変更手段と、を含むことを特徴とする請求項4~6のいずれか一項に記載のレーザ加工装置。
- 請求項1に記載のレーザ加工装置を用いたレーザ加工方法であって、
第2の導光体の各グループを用いて、グループ毎に観察用光を加工対象物に照射する第1ステップと、
加工対象物で生じる複数波長の光を検出し、検出した光の特性により照射対象を特定する第2ステップと、
照射対象の特定結果に基づき、加工用光を制御して加工対象物を加工する第3ステップと、
を備えることを特徴とするレーザ加工方法。 - 前記第1ステップにおいて、加工用光の走査方向の前方に配置された第2の導光体のグループのみを用いて、加工対象物に観察用光を照射することを特徴とする請求項9に記載のレーザ加工方法。
- 請求項4に記載のレーザ加工装置を用いたレーザ加工方法であって、
加工対象物に観察用光を照射する第1ステップと、
第3の導光体の各グループを用いて、加工対象物で生じる複数波長の光をグループ毎に検出し、検出した光の特性により照射対象を特定する第2ステップと、
照射対象の特定結果に基づき、加工用光を制御して加工対象物を加工する第3ステップと、
を備えることを特徴とするレーザ加工方法。 - 前記第2ステップにおいて、加工用光の走査方向の前方に配置された第3の導光体のグループのみを用いて、加工対象物で生じる複数波長の光を検出することを特徴とする請求項11に記載のレーザ加工方法。
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US13/054,459 US8546722B2 (en) | 2008-07-16 | 2009-06-18 | Laser processing apparatus and processing method employed therein |
EP09797780.5A EP2329907A4 (en) | 2008-07-16 | 2009-06-18 | LASER PROCESSING DEVICE AND METHOD OF APPLICATION THEREFOR |
CN200980127599.2A CN102099145B (zh) | 2008-07-16 | 2009-06-18 | 激光加工装置及其加工方法 |
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JP6832004B2 (ja) * | 2017-02-21 | 2021-02-24 | 株式会社ジャパンユニックス | 手動式レーザー溶着装置 |
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- 2009-06-18 JP JP2010520808A patent/JP5440499B2/ja not_active Expired - Fee Related
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US8546722B2 (en) | 2013-10-01 |
EP2329907A1 (en) | 2011-06-08 |
JPWO2010007852A1 (ja) | 2012-01-05 |
JP5440499B2 (ja) | 2014-03-12 |
EP2329907A4 (en) | 2014-01-29 |
CN102099145B (zh) | 2014-08-13 |
CN102099145A (zh) | 2011-06-15 |
US20110155709A1 (en) | 2011-06-30 |
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