CN103314324A - Apparatus and method for processing light guide plate using laser - Google Patents
Apparatus and method for processing light guide plate using laser Download PDFInfo
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- CN103314324A CN103314324A CN201180065345XA CN201180065345A CN103314324A CN 103314324 A CN103314324 A CN 103314324A CN 201180065345X A CN201180065345X A CN 201180065345XA CN 201180065345 A CN201180065345 A CN 201180065345A CN 103314324 A CN103314324 A CN 103314324A
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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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
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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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
- B23K26/0821—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head using multifaceted mirrors, e.g. polygonal mirror
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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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
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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
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
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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
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
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- Engineering & Computer Science (AREA)
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- Manufacturing & Machinery (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention relates to an apparatus and method for processing a light guide plate using a laser, and more particularly, to an apparatus and method for processing a light guide plate using a laser, which can significantly reduce processing time without acceleration/deceleration or changing of direction during processing of an optical pattern and can generate a laser optimized for processing the light guide plate using a cooling device and a shutter device which are adjusted by levels. The apparatus for processing a light guide plate using a laser according to the present invention relates to a laser processing apparatus for forming an optical pattern on a light guide plate using a laser, and comprises: a laser generating unit which generates the laser for forming the optical pattern; a transporting unit which transports the light guide plate on which the optical pattern is to be formed; a circulating optical unit which irradiates the laser generated from the laser generating unit onto the light guide plate being transported; and a control unit which controls the laser generating unit, the transporting unit, and the circulating optical unit for forming the optical pattern. The apparatus for processing a light guide plate using a laser according to the present invention can rapidly and accurately process a large-size light guide plate by forming an optical pattern using the circulating optical unit which does not require acceleration/deceleration or changing of direction, and can generate a uniform laser optimized for processing the light guide plate, thereby significantly improving the quality of processing and also significantly reducing a rate of defects.
Description
Technical field
The present invention relates to utilize the light guide plate processing unit (plant) of laser, relate in particular to a kind of light guide plate of in back light unit, using and utilize the device of Laser Processing optical design to reach processing optical method of patterning on light guide plate.
Background technology
Recently, LCD (the Liquid Crystal Display that attracts tremendous attention as display device, liquid crystal indicator) between the substrate that is formed with for the electrode of controlling each pixel, injects liquid crystal, for displays image information forms electric field between substrate, the ordered state of liquid crystal changes by means of the electric field that forms, utilize the permeability that causes thus poor, show the image information that needs.
Device such as LCD is different from PDP (Plasma Display Pannel), is not that liquid crystal itself is luminous, and only therefore the printing opacity and different according to whether, is displays image information, should be equipped with light supply apparatus in addition.
The light supply apparatus that is equipped with among the LCD etc. is commonly referred to back light unit, in this back light unit, comprises light source such as cathode-ray tube (CRT) that light takes place, LED, fluorescent light and make the homodisperse light guide plate of light, prismatic lens etc. of light source generation.
In the back light unit that uses in LCD etc., light source generally is positioned at the end of LCD, disperses equably for making the light that takes place from end, need comprise a plurality of of light guide plate.
Wherein, light guide plate is made of acryl resin usually, is formed with set optical design in a side with the moon quarter or positive the quarter.The effect of this optical design performance is to make the light that takes place from light source inject to outside the light guide plate between propagation periods by means of total reflection, namely, the incident angle of the light of propagating at ad-hoc location is reached below the critical angle, make the light of the light source generation that is provided to a side pass to whole LCD equably.
Be formed with the light guide plate of optical design in the past, the injection mo(u)lding manufacturing of the mould of utilization by being formed with optical design, but it is very difficult to make the light guide plate that is applied to big molded dimension more than 10 inches, ultra-thinization trend along with nearest display device, the thickness of light guide plate is attenuation gradually also, has the problem that can't make the light guide plate below the set thickness by injection mo(u)lding.
In addition, with regard to injection mo(u)lding, for making light guide plate, must need expensive mould, thereby existence is difficult to tackle the problem of the market situation of a small amount of many kindizations recently.
In addition, with regard to the light guide plate processing unit (plant) that utilizes laser in the past, because the streaking one of laser, fraction defective height not only, and the control of the optical devices of irradiating laser is efficient inadequately, the process time of light guide plate is long more a lot of than injection mo(u)lding, therefore exists manufacturing cost to raise, the problem that economy descends.
Summary of the invention
The present invention is used for solving aforesaid problem, the object of the present invention is to provide a kind of light guide plate processing unit (plant) and job operation thereof of utilizing laser, need not acceleration and deceleration and the direction conversion ground processing optical pattern of optical devices, improve process velocity, utilize each step cooling device, the laser of homogeneous takes place, improve the light guide plate processing quality, pass through shutter device, generation has not only homogeneous but also the laser pulse of the energy realizing towards light guide plate processing optimizing, the quality of the optical design that raising is processed in light guide plate can realize rapid processing.
For reaching aforesaid purpose, the 1st embodiment that utilizes the light guide plate processing unit (plant) of laser of the present invention, laser processing device as utilizing laser processing optical pattern on light guide plate comprises: laser generating unit, and the laser of described optical design processing takes place to be used in it; Transfer unit, its handover will be processed the light guide plate of described optical design; Rotary-type optical unit, it shines the laser that described laser generating unit takes place to the light guide plate in the described handover; Control module, it controls described laser generating unit, transfer unit and rotary-type optical unit for the processing of described optical design.
In addition, for reaching purpose as mentioned above, the 2nd embodiment that utilizes the light guide plate processing unit (plant) of laser of the present invention is as the laser processing device that utilizes laser processing optical pattern on light guide plate, comprise: laser generating unit, the laser of described optical design processing takes place to be used in it; Platform, it is placed for the light guide plate that will process described optical design; Rotary-type optical unit, it shines the laser that described laser generating unit takes place to described light guide plate; Rotary-type optical unit moving part, it makes described rotary-type optical unit move with set speed for the processing of described optical design; Control module, it controls described laser generating unit, rotary-type optical unit and rotary-type optical unit moving part for the processing of described optical design.
In addition, it is characterized in that described laser generating unit comprises: LASER Light Source; Described LASER Light Source is remained in both cooling devices of fixed temperature.
In addition, it is characterized in that described LASER Light Source comprises carbon dioxide laser.
In addition, it is characterized in that described laser generating unit also comprises shutter device, described control module control makes described carbon dioxide laser recur laser, controls the startup of described shutter device, makes the laser pulse corresponding with described optical design takes place.
In addition, it is characterized in that described shutter device comprises that acousto-optic modulator (AOM:AcousticOptical Modulator) constitutes.
In addition, it is characterized in that described LASER Light Source is that the LASER Light Source that wavelength is the laser between 10 μ m～20 μ m (acryl resin absorbing wavelength scope) takes place in fact.
In addition, it is characterized in that, described cooling device the adjustment of described LASER Light Source be described both fixed temperatures ± 0.1 ℃ scope in.
In addition, it is characterized in that, described cooling device for be adjustment described both fixed temperatures ± 0.1 ℃ scope, regulate temperature through 2 above steps at least, more through each step, thermoregulator amplitude is more narrow.
In addition, it is characterized in that, described cooling device is the cooling device that utilizes chilled water, for the temperature of described chilled water is kept set, comprise main cooling end, auxiliary cooling end and respond to the temperature sensor of the temperature of the chilled water in the main cooling end, described auxiliary cooling end is provided to entrance or the outlet of described main cooling end, based on the temperature of the chilled water of described temperature sensor perception, makes the chilled water heating or the cooling that flow into or flow out described main cooling end.
In addition, described rotary-type optical unit comprises: catoptron portion, and it is used for the travel direction of the laser of the described laser generating unit generation of change; The laser head, it is to the light guide plate irradiation laser by the input of described catoptron portion; The wheel frame, it is for described laser head fixed installation; Actuator, it makes described the wheel confine the speed rotation.
In addition, it is characterized in that described catoptron portion comprises: the 1st catoptron, it is installed on described top of taking turns frame, changes the travel direction of the laser that described laser generating unit takes place; The 2nd catoptron, it is installed on described central portion of taking turns frame, reflects the laser of described the 1st mirror reflects to the laser head.
In addition, it is characterized in that described the 1st catoptron is fixedly installed in the top of wheel frame; Described laser head and the 2nd catoptron constitute right more than 2 at least, are installed on the described frame of taking turns, and each the 2nd catoptron reflects the laser of described hard-wired the 1st mirror reflects to constituting right laser head.
In addition, for reaching aforesaid purpose, the 1st embodiment that utilizes the light conducting board processing method of laser processing device of the present invention, as the light conducting board processing method that utilizes laser processing device processing optical pattern on light guide plate, comprise: transfer step, for the processing of described optical design, transfer the light guide plate on the transfer unit that is provided to the described laser processing device of transferring described light guide plate with set speed; Procedure of processing rotates the rotary-type optical unit of described laser processing device, with processing optical pattern on the light guide plate of concentric tracing pattern in handover with constant speed on the light guide plate of set speed handover in described handover step.
In addition, for reaching aforesaid purpose, the 2nd embodiment that utilizes the light conducting board processing method of laser processing device of the present invention, as the light conducting board processing method that utilizes laser processing device processing optical pattern on light guide plate, comprise: installation steps, for the processing of described optical design, described light guide plate is installed on the platform of described laser processing device; Transfer step, transfer the rotary-type optical unit of the described laser processing device of constant speed rotation to the top that is installed on described light guide plate with set speed; Procedure of processing makes the described rotary-type optical unit constant speed rotation of transferring with described set speed, is being provided to processing optical pattern on described the light guide plate with concentric tracing pattern.
As above the present invention of Gou Chenging just realizes the processing of optical design owing to need not acceleration and deceleration and the direction conversion of optical unit, thereby has the effect that can significantly improve process velocity.
In addition, owing to utilize shutter device generation laser pulse, thereby has generating plane is equably realized effect from the laser optimized to light guide plate processing.
In addition, owing to utilize shutter device, thereby have and can process rapidly, can supply the effect towards the laser of processing realization optimization of homogeneous again.
In addition, owing to utilize each step cooling device, keep the temperature of LASER Light Source setly, thereby have and homogeneous can take place and the effect of high-quality laser.
Description of drawings
Fig. 1 is the summary block diagram of the 1st embodiment of laser processing device of the present invention;
Fig. 2 is the summary block diagram of the 2nd embodiment of laser processing device of the present invention;
Fig. 3 is the front view that the integral body of the laser processing device of demonstration the 1st embodiment of the present invention constitutes;
Fig. 4 is the vertical view that the integral body of the laser processing device of demonstration the 1st embodiment of the present invention constitutes;
Fig. 5 is the front view that the integral body of the laser processing device of demonstration the 2nd embodiment of the present invention constitutes;
Fig. 6 is the block diagram of summary formation that shows the cooling unit of one embodiment of the invention;
Fig. 7 is the process flow diagram that shows the 1st embodiment of the light conducting board processing method that utilizes laser processing device of the present invention;
Fig. 8 is the process flow diagram that shows the 1st embodiment of the light conducting board processing method that utilizes laser processing device of the present invention;
Fig. 9 shows that acrylic acid material light guide plate is to the chart of the absorbance log of optical maser wavelength.
Preferred forms
The 1st embodiment that utilizes the light guide plate processing unit (plant) of laser of the present invention, the laser processing device as utilizing laser processing optical pattern on light guide plate comprises: laser generating unit, the laser of described optical design processing takes place to be used in it; Transfer unit, its handover will be processed the light guide plate of described optical design; Rotary-type optical unit, it shines the laser that described laser generating unit takes place to the light guide plate in the described handover; Control module, it controls described laser generating unit, transfer unit and rotary-type optical unit for the processing of described optical design.
In addition, the 2nd embodiment that utilizes the light guide plate processing unit (plant) of laser of the present invention, the laser processing device as utilizing laser processing optical pattern on light guide plate comprises: laser generating unit, the laser of described optical design processing takes place to be used in it; Platform, it is placed for the light guide plate that will process described optical design; Rotary-type optical unit, it shines the laser that described laser generating unit takes place to described light guide plate; Rotary-type optical unit moving part, it makes described rotary-type optical unit move with set speed for the processing of described optical design; Control module, it controls described laser generating unit, rotary-type optical unit and rotary-type optical unit moving part for the processing of described optical design.
Embodiment
With reference to the accompanying drawings, light guide plate processing unit (plant) and the job operation of laser utilized of the present invention is elaborated.
Fig. 1 is the summary block diagram of the 1st embodiment of laser processing device of the present invention, Fig. 3 is the front view that the integral body of the laser processing device of demonstration the 1st embodiment of the present invention constitutes, Fig. 4 is the vertical view that shows that the integral body of the laser processing device of the 1st embodiment of the present invention constitutes, and Fig. 6 is the block diagram of summary formation that shows the cooling unit of one embodiment of the invention.
The 1st embodiment of the light guide plate processing unit (plant) of laser that utilizes of the present invention comprises: laser generating unit 100, and it is used for the processing of optical design A; Transfer unit 300, it transfers light guide plate with set speed; Rotary-type optical unit 200, the laser that it takes place to the light guide plate irradiating laser generating unit 100 in transferring for the processing optical pattern; And control module 400, it controls each unit.
LASER Light Source 110 is light sources that the laser of processing optical pattern A on light guide plate 1 takes place to be used for, the energy of the laser that the laser processing device utilization takes place forms all shapes that the point corresponding with optical design etc. comprises formation optical designs such as circle, rectangle in light guide plate 1.
LASER Light Source 110 is according to its occurring principle or be used for the material of laser amplification, and multiple kind is arranged, and resulting characteristic of laser is also various.Fig. 9 is as the acryl resin of light guide plate 1 chart to the reflectance of optical maser wavelength, and therefrom as can be known, the acryl resin only absorptivity to the laser of particular range of wavelengths is outstanding.Therefore, be processing optical pattern on light guide plate 1, laser should be absorbed by acryl resin, therefore, utilizes the light of the outstanding wavelength coverage of absorptivity, is suitable for homogeneous and the processing of optical design efficiently.
Particularly carbon dioxide laser is as the gas laser of the transition between the vibrational energy level of utilizing carbon dioxide, the absorbance log height that is used as the acryl resin of light guide plate 1 material, can utilize radiofrequency signal to vibrate like a cork, therefore, be the LASER Light Source that is fit to utilize the light guide plate processing of laser.But, for forming optical design, should be to the laser of the light guide plate 1 irradiation pulse mode corresponding with pattern, therefore, be generally the laser pulse corresponding with optical design takes place, to carbon dioxide laser light source incoming radio frequency signal, make laser generation, according to the optical design with processing, regulate the cycle of radiofrequency signal.
The point etc. that forms optical design has following feature, for dispersed light equably on whole LCD, not only needs big or small homogeneous, and if the energy of laser both do not reach more than the sizing, then can't process the point that forms optical design.In addition, the thickness of light guide plate is more thin, and the some size of the optical design that forms in light guide plate is more little.For forming the less point of this size, the amplitude of laser pulse is little.In addition, for the rapid processing that realizes be fit to producing in batches, big or small homogeneous not only should take place but also have the laser pulse of the energy that satisfies light guide plate processing fully, and the cycle of each pulse also to lack.
But carbon dioxide laser is by means of radiofrequency signal generation laser or when interrupting, the waveform that the energy of the laser of generation continues to reduce after demonstrating and continuing to increase.Therefore, when by means of the radiofrequency signal of both fixed cycles and when laser pulse takes place, the energy waveform of laser is not the form with square wave, but demonstrate the waveform that continues to reduce after continuing to increase, for processing very little point or processing with the speed that is enough to the satisfied property produced in batches, shortened the radiofrequency signal cycle.So, shortening along with the radiofrequency signal cycle, before the energy level that the laser that vibrates in carbon dioxide laser is able to process, demonstrate the waveform that energy reduces, therefore, can't process a little in light guide plate, or the following laser of processing stage continues to be delivered to light guide plate, bring out the thermal deformation of light guide plate.In addition, along with to carry out laser generation and interruption repeatedly than the short period, the energy of the laser of vibration is non-constant, has the big or small inconstant problem of the point of processing.
The present invention's control makes LASER Light Source 110 recur laser, be equipped with shutter device 120, the feasible laser of output continuously blocks or passes through, the pulse of each impulse magnitude homogeneous can take place, have the above laser pulse of processing stage energy does not only take place, and to make the waveform of laser pulse be the effect of square wave.That is, not that laser pulse On/Off carbon dioxide laser be to take place, but make carbon dioxide laser continue vibration, utilize shutter device 120 to control on one side on one side, make and block/pass through, form the suitable laser pulse of processing.Thereby, even under the process velocity faster that can satisfy the property produced in batches, the laser pulse with homogeneous energy of high-quality also can take place.
For example, with regard to the CO2 laser instrument, the minimum On/Off time is 150 μ s, supposes when process velocity is 4m/s, and then the following point of 0.6mm can't be processed.But, with regard to shutter device 120, can be with far away than carrying out On/Off about short 1 μ s of On/Off time of laser, thus even process with the process velocity that is fit to produce in batches, also can be suitable for its laser pulse.
Therefore, point at the optical design of light guide plate 1 processing forms equably, only shine the above laser of processing stage, thereby have and to realize minimized while processing optical pattern in the thermal deformation that makes light guide plate 1, even under the process velocity faster that is suitable for producing in batches, also can supply the effect of the high-quality laser that is suitable for processing.
As the explanation that the front is done, shutter device 120 is to make the laser that recurs block, pass through, and forms the device of laser pulse.This shutter device 120 so long as the device that makes laser in the very short time, block or pass through then all can use.But, for the convenience of shutter device 120 controls, the AOM (Acoustic Optical Modulator) that preferably uses refractive index to change because of radiofrequency signal.The refractive index of AOM inside changes because of radiofrequency signal, and therefore, the refraction angle of laser is different, staggers in the path.Therefore, break away from the path of inciding rotary-type optical unit 200, laser pulse is not to light guide plate 1 irradiation.Certainly, on different path, can be equipped with and substitute member, the feasible energy that absorbs laser.
LASER Light Source 110 both makes laser generation more than the fixed temperature, thereby a large amount of heat takes place.In addition, 110 pairs of thermotonus sensitivities of LASER Light Source, so if temperature is non-constant, the output of laser then can be non-constant, thus the size of point of processing form heterogeneity.Therefore, constant for the output that keeps energy, cooling device 130 of the present invention keeps the temperature of LASER Light Source 110 setly.As the explanation that the front is done, along with nearest ultra-thinization tendency, the thickness of light guide plate presents the trend of attenuation gradually, and therefore, the size that forms the point of optical design also should form very for a short time.In addition, be that the light of homogeneous disperses, the size of point is also answered homogeneous, so what keep laser output all once had been unusual important problem setly.But common cooling device has the deviation about several ℃, and this deviation causes being not enough to form equably the less point of foregoing size.Under normal temperature roughly, usually (the CO2 laser instrument is formation in the 100W ± 3W) in 3% scope of output in the output of LASER Light Source change, but for forming the very little point (being roughly 40 μ m to 300 μ m) of size, the temperature of preferred LASER Light Source 110 both remaining under the fixed temperature ± 0.1 ℃ of scope in.
From real angle, only by once keeping temperature as above very difficult, or keep the cooling device price of as above temperature very expensive, therefore, the present invention regulates temperature by 2 above steps.That is, for LASER Light Source 110 is remained in both fixed temperatures, in the adjustment of the 1st step, temperature is remained in ± 0.2 ℃ of scope, detect the temperature of in the 1st step, regulating, in the 2nd step, regulate according to its difference.If with the adjusted temperature, so, in the 3rd step, detect the temperature of in the 2nd step, regulating by 3 steps, in the 3rd step, regulate according to its difference.Cooling device 130 utilizes chilled water to keep temperature usually, and specific heat of water is big, and temperature is difficult for changing.Therefore, only not only difficult by once regulating temperature, and also it is more difficult to reach its accuracy.Based on this reality, if be equipped with a plurality of cooling ends, regulate the temperature of chilled water step by step by it, then can regulate temperature with required precision.
In one embodiment of the invention, to utilize the cooling end of 2 steps, namely, utilize main cooling end 132 and auxiliary cooling end 134, the temperature that keeps LASER Light Source 110 is example explanation cooling device 130 setly, for keep the temperature of LASER Light Source 110 with ± 0.1 ℃ precision, if suppose that the temperature deviation on main cooling end 132 technical indicators is 0.2 ℃, then the adjusting temperature of main cooling end 132 is set to 7.7 ℃.So, even in view of the temperature deviation on the technical indicator, also can not surpass 8 ℃ as the maintenance temperature of LASER Light Source 110, exit portion at main cooling end 132 is equipped with temperature sensor 138, to the temperature of the chilled water that comes out from main cooling end 132 with keep 8 ℃ of temperature to compare as target, in auxiliary cooling end 134, replenish according to its difference.Though the auxiliary preferred serviceability temperature pondage of cooling end is little, but can more fine regulate the cooling device of temperature, in an example that is used for explanation, auxiliary 134 of cooling ends have heating function, but it is opposite, also can also make whole execution heat and cooling so that carry out refrigerating function.If according to the function of auxiliary cooling end 134, change the temperature that arranges of main cooling end 132, then preferably, can remain on the temperature of LASER Light Source 110 ± 0.1 ℃ precision.Main cooling end 132 and auxiliary cooling end 134 by cooling device 130 have ± chilled water of 0.1 ℃ of precision, flow into and surround LASER Light Source 110 cooling chamber 136 on every side, the temperature that keeps LASER Light Source 110 circulates through main cooling end 132, auxiliary cooling end 134 setly.With regard to regard to the cooling of cooling chamber 136 inner light sources, between the battery lead plate of LASER Light Source 110, form the stream for flow of cooling water, make the electrode cooling, or configuration heat sink, utilization is flowed chilled water in heat sink principle, chilled water make it cooling in can be around flowing through the various device that is provided to LASER Light Source 110.
* 45 rotary-type optical units 200 are according to optical design, the laser that the light guide plate 1 irradiating laser generating unit 100 in transferring takes place.
Rotary-type optical unit 200 is light guide plate 1 irradiating laser in transfer, and comprising: catoptron portion 240,250, and it changes the travel direction of laser; Laser head 220,230, its laser to light guide plate 1 irradiation from 240,250 incidents of catoptron portion; Wheel frame 260, it is for 220,230 fixed installations of laser head; Actuator 210, it makes the rotation of wheel frame 260 constant speed.
Catoptron portion 240,250 comprises: the 1st catoptron 240, the top that it is installed on wheel frame 260, laser reflection 90 degree that laser generating unit 100 is taken place; The 2nd catoptron 250, it is to each laser head 220,230 reflections the 1st catoptron 240 laser light reflected.The 1st catoptron 240 and the irrelevant to rotation of taking turns frame 260, the direction fixed installation of aiming at the laser of laser generating unit 100 outputs.The 2nd catoptron 250 is different from the 1st catoptron 240, is fixedly installed in wheel frame 260, and is provided to and each laser head 220,230 in opposite directions positions together rotate with the rotation of wheel frame 260, during set interval, make the 1st catoptron 240 laser light reflected reflex to each laser head 220,230.
That is, the 2nd catoptron 250 is mounted to the number identical with the laser head, constitutes rightly with each laser head, is equipped with to such an extent that make from the laser of the 1st catoptron 240 incidents and incide each laser head.Therefore, along with the rotation of wheel frame 260, have only the 2nd catoptron 250 with the 1st catoptron 240 position in opposite directions to make the 1st catoptron 240 laser light reflected to the incident of corresponding laser head.Certainly, different if optics constitutes, also can omit the 1st catoptron or the 2nd catoptron, but be in during balance (trade-off) concerns with the homogeneity of laser.
Fig. 2 is the summary block diagram of the 2nd embodiment of laser processing device of the present invention, and Fig. 5 is the front view that the integral body of the laser processing device of demonstration the 2nd embodiment of the present invention constitutes.
With reference to Fig. 2 and Fig. 5, the 2nd embodiment of the present invention is described, but omits the explanation that repeats with the 1st embodiment.The 2nd embodiment of the present invention is different from the 1st embodiment, and light guide plate is not mobile on platform, but under laying state, rotary-type optical unit 200 is transferred with set speed by means of rotary-type optical unit moving part 500.Certainly, the rotary-type optical unit in the handover 200 carries out the constant speed rotation for the processing of optical design.
Rotary-type optical unit moving part 500 comprises: guide rail 510, and it is provided on the path that rotary-type optical unit 200 moves; Rotary-type optical unit moves actuator 520, and itself and 200 combinations of rotary-type optical unit transfer rotary-type optical unit 200 constant speed along guide rail 510.
Under the state that light guide plate 1 is so fixed, even rotary-type optical unit 200 is processed, also can process the optical design with the 1st embodiment same modality when constant speed moves.
As mentioned above, the light guide plate processing unit (plant) that utilizes laser of the present invention, the optical devices etc. that can eliminate laser processing device in the past fully up and down or left and right sides to-and-fro movement processing optical pattern, the loss of time because causing in the conversion of two terminal acceleration and deceleration and direction, has the effect of the process time that can keep almost the same with injection mo(u)lding.
With reference to Fig. 7, the 1st embodiment that utilizes the light conducting board processing method of laser processing device of the present invention is described, at first, for the processing of optical design, with set speed, constant speed is transferred the light guide plate (S100) that is provided on the transfer unit 300.In light guide plate is transferred with constant speed, rotary-type optical unit 200 in the constant speed rotation, processing optical pattern (S110) on light guide plate 1.If utilize the system of robotization, then can be when continuously transferring light guide plate, processing optical pattern very efficiently.
With reference to Fig. 8, the 2nd embodiment that utilizes the light conducting board processing method of laser processing device of the present invention is described, the light guide plate with the processing optical pattern is installed on (S200) on the platform.Rotary-type optical unit 200 crosses light guide plate by rotary-type optical unit moving part 500, carries out the constant speed rectilinear motion, simultaneously, rotary-type optical unit 200 in constant speed rotation the processing optical pattern (S210, S220).By this processing, can process the optical design identical with the 1st embodiment of the light conducting board processing method that utilizes laser processing device of the present invention.
The industrial utilization possibility
As mentioned above, the present invention has the feature that can process light guide plate quickly and accurately, can make fraction defective realize minimizing, and improves the property produced in batches.
Claims (15)
1. light guide plate processing unit (plant) that utilizes laser, the laser processing device as utilizing laser processing optical pattern on light guide plate is characterized in that, comprising:
Laser generating unit, the laser of described optical design processing takes place to be used in it;
Transfer unit, its handover will be processed the light guide plate of described optical design;
Rotary-type optical unit, it shines the laser that described laser generating unit takes place to the light guide plate in the described handover;
Control module, it controls described laser generating unit, transfer unit and rotary-type optical unit for the processing of described optical design.
2. light guide plate processing unit (plant) that utilizes laser, the laser processing device as utilizing laser processing optical pattern on light guide plate is characterized in that, comprising:
Laser generating unit, the laser of described optical design processing takes place to be used in it;
Platform, it is placed for the light guide plate that will process described optical design;
Rotary-type optical unit, it shines the laser that described laser generating unit takes place to described light guide plate;
Rotary-type optical unit moving part, it makes described rotary-type optical unit move with set speed for the processing of described optical design;
Control module, it controls described laser generating unit, rotary-type optical unit and rotary-type optical unit moving part for the processing of described optical design.
3. the light guide plate processing unit (plant) that utilizes laser according to claim 1 and 2 is characterized in that,
Described laser generating unit comprises: LASER Light Source; Described LASER Light Source is remained in both cooling devices of fixed temperature.
4. the light guide plate processing unit (plant) that utilizes laser according to claim 3 is characterized in that,
Described LASER Light Source comprises carbon dioxide laser.
5. the light guide plate processing unit (plant) that utilizes laser according to claim 4 is characterized in that,
Described laser generating unit also comprises shutter device,
Described control module control makes described carbon dioxide laser recur laser, controls the startup of described shutter device, makes the laser pulse corresponding with described optical design takes place.
6. the light guide plate processing unit (plant) that utilizes laser according to claim 5 is characterized in that,
Described shutter device comprises that acousto-optic modulator (AOM:AcousticOptical Modulator) constitutes.
7. the light guide plate processing unit (plant) that utilizes laser according to claim 3 is characterized in that,
Described LASER Light Source is that the LASER Light Source that wavelength is the laser between 10 μ m～20 μ m takes place in fact.
8. the light guide plate processing unit (plant) that utilizes laser according to claim 3 is characterized in that,
Described cooling device the adjustment of described LASER Light Source be described both fixed temperatures ± 0.1 ℃ scope in.
9. the light guide plate processing unit (plant) that utilizes laser according to claim 8 is characterized in that,
Described cooling device for be adjustment described both fixed temperatures ± 0.1 ℃ scope, regulate temperature through 2 above steps at least, more through each step, thermoregulator amplitude is more narrow.
10. the light guide plate processing unit (plant) that utilizes laser according to claim 3 is characterized in that,
Described cooling device is the cooling device that utilizes chilled water,
For the temperature of described chilled water is kept set, comprise main cooling end, auxiliary cooling end and respond to the temperature sensor of the temperature of the chilled water in the main cooling end,
Described auxiliary cooling end is provided to entrance or the outlet of described main cooling end, based on the temperature of the chilled water of described temperature sensor perception, makes the chilled water heating or the cooling that flow into or flow out described main cooling end.
11. the light guide plate processing unit (plant) that utilizes laser according to claim 1 and 2 is characterized in that,
Described rotary-type optical unit comprises: catoptron portion, and it is used for the travel direction of the laser of the described laser generating unit generation of change;
The laser head, it is to the light guide plate irradiation laser by the input of described catoptron portion;
The wheel frame, it is for described laser head fixed installation;
Actuator, it makes described the wheel confine the speed rotation.
12. the light guide plate processing unit (plant) that utilizes laser according to claim 11 is characterized in that,
Described catoptron portion comprises: the 1st catoptron, and it is installed on described top of taking turns frame, changes the travel direction of the laser that described laser generating unit takes place;
The 2nd catoptron, it is installed on described central portion of taking turns frame, reflects the laser of described the 1st mirror reflects to the laser head.
13. the light guide plate processing unit (plant) that utilizes laser according to claim 12 is characterized in that,
Described the 1st catoptron is fixedly installed in the top of wheel frame;
Described laser head and the 2nd catoptron constitute more than 2 pairs at least, are installed on the described frame of taking turns, and each the 2nd catoptron reflects the laser of described hard-wired the 1st mirror reflects to constituting right laser head.
14. a light conducting board processing method that utilizes laser processing device, the light conducting board processing method as utilizing laser processing device processing optical pattern on light guide plate is characterized in that, comprising:
Transfer step, for the processing of described optical design, transfer the light guide plate on the transfer unit that is provided to the described laser processing device of transferring described light guide plate with set speed;
Procedure of processing rotates the rotary-type optical unit of described laser processing device, with processing optical pattern on the light guide plate of concentric tracing pattern in handover with constant speed on the light guide plate of set speed handover in described handover step.
15. a light conducting board processing method that utilizes laser processing device, the light conducting board processing method as utilizing laser processing device processing optical pattern on light guide plate is characterized in that, comprising:
Installation steps for the processing of described optical design, are installed on described light guide plate the platform of described laser processing device;
Transfer step, transfer the rotary-type optical unit of the described laser processing device of constant speed rotation to the top that is installed on described light guide plate with set speed;
Procedure of processing makes the described rotary-type optical unit constant speed rotation of transferring with described set speed, is being provided to processing optical pattern on described the light guide plate with concentric tracing pattern.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2011/000425 WO2012099286A1 (en) | 2011-01-21 | 2011-01-21 | Apparatus and method for processing light guide plate using laser |
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| CN103314324A true CN103314324A (en) | 2013-09-18 |
| CN103314324B CN103314324B (en) | 2016-09-28 |
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| WO (1) | WO2012099286A1 (en) |
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Also Published As
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| WO2012099286A1 (en) | 2012-07-26 |
| CN103314324B (en) | 2016-09-28 |
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Application publication date: 20130918 Assignee: Hefei toppower Tatsu Intelligent Equipment Co. Ltd. Assignor: Yin Duizhong Contract record no.: 2017990000175 Denomination of invention: Apparatus and method for processing light guide plate using laser Granted publication date: 20160928 License type: Exclusive License Record date: 20170509 |
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Effective date of registration: 20220208 Address after: 101, 201 and 301, building 1, production plant of Hefei Xinhong Photoelectric Technology Co., Ltd., north of Kuihe road and east of Jiudingshan Road, Hefei City, Anhui Province Patentee after: HEFEI TAIWO INTELLIGENT EQUIPMENT Co.,Ltd. Address before: Gyeonggi Do, South Korea Patentee before: Yin Duizhong |