CN114905139A - Device and method for clearing CD data by laser - Google Patents
Device and method for clearing CD data by laser Download PDFInfo
- Publication number
- CN114905139A CN114905139A CN202110181566.9A CN202110181566A CN114905139A CN 114905139 A CN114905139 A CN 114905139A CN 202110181566 A CN202110181566 A CN 202110181566A CN 114905139 A CN114905139 A CN 114905139A
- Authority
- CN
- China
- Prior art keywords
- laser
- motor
- clamp
- optical disc
- dimensional galvanometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- B23K26/0823—Devices involving rotation of the workpiece
Abstract
The invention discloses a cleaning device and a method for removing optical disc data by laser, wherein the device comprises: a laser for emitting laser light; the one-dimensional galvanometer is used for deflecting the laser to the optical disk to be processed and controlling the track of the laser on the optical disk to be linear; a clamp for clamping and fixing the optical disc to be processed; the output shaft of the motor is connected with the clamp, and the output shaft of the motor is coaxial with the clamp so as to drive the clamp and the optical disk clamped on the clamp to rotate; the field lens is arranged between the one-dimensional galvanometer and the clamp and is used for focusing the laser deflected by the one-dimensional galvanometer on the optical disk to be processed; by adopting the cleaning device provided by the invention, the laser emitted by the laser is changed into linear motion through the one-dimensional galvanometer, the motor is matched to drive the clamp and the optical disk to rotate, the whole surface of the optical disk is scanned by the laser, in the scanning process, the high-energy laser destroys the data storage structure on the surface of the optical disk, the data is cleared, and after the data is cleared, the optical disk is complete, is beneficial to recovery and has no influence on the environment.
Description
Technical Field
The present invention relates to the field of laser application technologies, and in particular, to a device and a method for removing data from an optical disc by using laser.
Background
Optical discs are widely used as storage media, and are particularly important for destroying data of optical discs. At present, the most reliable optical disk destruction mode is the crushing type destruction, the optical disk is ground into particles, the particle size is limited in a certain range, the method can completely destroy the optical disk, but the destruction efficiency is low. The incineration method has a great influence on the environment and is not suitable for large-scale application.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a high-efficiency, energy-saving and environment-friendly optical disc data cleaning method, and discloses a cleaning device for cleaning optical disc data by laser, comprising:
a laser for emitting laser light;
the one-dimensional galvanometer is used for deflecting the laser to an optical disc to be processed and controlling the track of the laser on the optical disc to be linear;
a clamp for clamping and fixing the optical disc to be processed;
an output shaft of the motor is connected with the clamp, and the output shaft of the motor is coaxial with the clamp so as to drive the clamp and the optical disk clamped on the clamp to rotate;
and the field lens is arranged between the one-dimensional galvanometer and the clamp and used for focusing the laser deflected by the one-dimensional galvanometer on the optical disc to be processed.
According to some embodiments of the invention, the laser is transmitted between the laser and the one-dimensional galvanometer through an optical fiber or through a spatial optical path.
According to some embodiments of the invention, the laser is a continuous laser or a pulsed laser, the laser comprising one of: solid state lasers, fiber lasers, semiconductor lasers, gas lasers, or disk lasers.
According to some embodiments of the present invention, a beam shaping device is further disposed between the laser and the one-dimensional galvanometer, and the beam shaping device is configured to collimate and expand laser light emitted by the laser into parallel beams.
According to some embodiments of the present invention, the laser further comprises a controller, and the controller is respectively connected to the laser, the motor, and the one-dimensional galvanometer and drives or adjusts the laser, the motor, and the one-dimensional galvanometer to operate.
According to some embodiments of the present invention, the optical disc apparatus further comprises a dust removing device disposed on a side surface or above the clamp, and a protective cover disposed above the clamp, wherein the protective cover completely isolates the laser and the optical disc acting space from an external space when closed.
According to some embodiments of the invention, further comprising a hard stop for shutting down the motor and the laser in case of an emergency.
The invention also discloses a method for clearing the optical disc data by adopting the cleaning device for clearing the optical disc data by adopting the laser, which comprises the following steps:
switching on a power supply, and starting the cleaning device;
placing the optical disk to be processed on a clamp for fixing;
setting the scanning frequency and the scanning width of a one-dimensional galvanometer, setting the rotating speed of a motor and setting the output parameters of a laser;
starting the laser and the motor to carry out laser scanning on the optical disc to finish data clearing;
taking out the processed optical disk, closing the equipment or putting in a new optical disk to be processed for repeated operation;
the starting time of the motor is 1-3 seconds earlier than the starting time of the laser emission, and the laser emission time of the laser is 1 second additionally added to the time of one circle of rotation of the optical disc.
According to some embodiments of the present invention, after the cleaning device is started, an indication light of a laser is started, parameters of the one-dimensional galvanometer, the laser and the motor are set or adjusted by a light spot of the indication light on the optical disc to be processed, and after the setting of the parameters is completed, the indication light is turned off, and the laser is started to output laser.
According to some embodiments of the invention, after setting the scanning frequency and the scanning width of the one-dimensional galvanometer, setting the rotating speed of the motor and setting the output parameters of the laser, the method further comprises turning on the dust removing device and turning off the protective cover.
According to the technical scheme, the cleaning device for removing the data of the optical disk by adopting the laser can realize the data removal of the optical disks such as CD-ROM, CDR, DVD, BD and the like, the laser emitted by the laser is changed into linear reciprocating scanning by the one-dimensional galvanometer, and the motor is matched to drive the clamp and the optical disk to rotate so as to complete the scanning of the whole surface of the optical disk by the laser.
Drawings
FIG. 1 is a schematic diagram of a cleaning apparatus for removing data from an optical disc by using a laser according to an embodiment of the present invention;
FIG. 2 is a partial schematic structural diagram of a cleaning apparatus for removing data from an optical disc by using a laser according to an embodiment of the present invention;
FIG. 3 schematically illustrates a flow diagram of a particular embodiment of the present invention;
wherein, 1 represents a power supply, 2 represents an energy-transmitting optical fiber, 3 represents a laser, 4 represents an emergency stop button, 5 represents a beam shaping device, 6 represents a field lens, 7 represents a one-dimensional galvanometer, 8 represents a galvanometer driving card, 9 represents an optical disc, 10 represents a clamp, 11 represents a motor, 12 represents a controller power supply, 13 represents a motor driver, 14 represents a signal generator, 15 represents a switch button, 16 represents a controller, 17 represents a touch screen, 18 represents a protective cover, 19 represents a host computer, and 20 represents a dust removing device.
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. It may be evident, however, that one or more embodiments may be practiced without these specific details. Furthermore, in the following description, descriptions of well-known technologies are omitted so as to avoid unnecessarily obscuring the concepts of the present invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "comprises" and "comprising," when used herein, specify the presence of stated features, steps, or operations, but do not preclude the presence or addition of one or more other features.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
Fig. 1 is a schematic structural diagram of a cleaning apparatus for removing data from an optical disc by using a laser according to an embodiment of the present invention.
In order to solve the above technical problems, the present invention discloses a cleaning device for removing data from an optical disc by using laser, which comprises a laser 3, a one-dimensional galvanometer 7, a clamp 10, a motor 11, and a field lens 6, as shown in fig. 1.
According to some embodiments of the present invention, a laser 3 is used to emit laser light, and a power supply 1 is connected to the laser 3 and provides power to the laser 3.
According to some embodiments of the invention, the laser 3 is a continuous laser or a pulsed laser, the laser 3 comprising one of: solid state lasers, fiber lasers, semiconductor lasers, gas lasers or disk lasers.
According to some embodiments of the present invention, the one-dimensional galvanometer 7 is used for deflecting the laser beam onto the optical disc 9 to be processed and controlling the scanning track of the laser beam on the optical disc 9 to be linear.
According to some embodiments of the present invention, the laser emitted from the laser 3 is transmitted to the one-dimensional galvanometer 7, the laser is reflected by the one-dimensional galvanometer 7 to the optical disc 9 to be processed arranged below the one-dimensional galvanometer 7, the one-dimensional galvanometer 7 is vibrated by the galvanometer driving card 8 connected with the one-dimensional galvanometer 7, and meanwhile, the light spot projected to the optical disc 9 is also moved.
According to some embodiments of the present invention, the control of the linear reciprocating motion of the laser spot on the optical disc 9 is realized by adjusting the parameters of the galvanometer driver card 8 and the one-dimensional galvanometer 7.
According to some embodiments of the invention, the clamp 10 is used to clamp and hold the optical disc 9 to be processed.
According to some embodiments of the present invention, optionally, the clamp 9 comprises a plurality of clamping jaws, and the plurality of clamping jaws clamp the inner ring of the optical disc 9 to fix the optical disc.
According to some embodiments of the present invention, an output shaft of the motor 11 is connected to the clamper 10, and the output shaft of the motor 11 is coaxial with the clamper 10 to rotate the clamper 10 and the optical disc 9 clamped on the clamper.
According to some embodiments of the present invention, the rotation of the motor 11 drives the optical disc 9 to rotate, and the vibration of the one-dimensional galvanometer 7 is matched to realize the scanning of the laser emitted by the laser 3 on the optical disc 9 in an annular/circular area, so as to realize the deletion of the data stored on the optical disc 9.
According to some embodiments of the present invention, the field lens 6 is disposed between the one-dimensional galvanometer 7 and the clamper 10 for focusing the laser light deflected by the one-dimensional galvanometer 7 onto the optical disc 9 to be processed.
According to some embodiments of the present invention, the laser 3 and the one-dimensional galvanometer 7 transmit laser light through an optical fiber or through a spatial optical path.
According to some embodiments of the present invention, the optical fiber is optionally an energy transmitting fiber 2 for transmitting laser light having high energy.
According to some embodiments of the present invention, a beam shaping device 5 is further disposed between the laser 3 and the one-dimensional galvanometer 7, and the beam shaping device 5 is configured to collimate and expand the laser light emitted by the laser 3 into parallel beams.
According to some embodiments of the present invention, the laser further comprises a controller 16, and the controller 16 is connected to the laser 3, the motor 11, and the one-dimensional galvanometer 7, respectively, and drives or adjusts the operation of the laser 3, the motor 11, and the one-dimensional galvanometer 7. The controller 16 is provided with a switch button 15, and the operation of the controller 16 is realized by the switch button 15.
According to some embodiments of the present invention, the galvanometer driver card 8 is connected to the controller 16, and the logic sequence of starting and stopping the galvanometer 7 is controlled by the programming of the controller 16
According to some embodiments of the present invention, the controller power supply 12 is connected to the controller 16 for supplying power to the controller 16. Optionally, the controller power supply 12 may also be connected to the motor driver 13 and the galvanometer driver card 8, and supply power to the motor driver 13 and the galvanometer driver card 8.
According to some embodiments of the present invention, the motor driver 13 is connected to the signal generator 14, and the signal generator 14 sets the frequency of the signal to precisely control the rotation speed of the motor 11.
According to some embodiments of the present invention, the motor driver 13 is connected to the controller 16, and the logic sequence of starting and stopping the laser 13 and the motor 11 is set by programming the controller 16.
According to some embodiments of the invention, the washing apparatus further comprises a display for displaying parameters and operating conditions of the washing apparatus in real time. Optionally, the display is a touch screen 17, so that the operation is more convenient and the display is clearer.
Fig. 2 schematically shows a partial structural diagram of a cleaning apparatus for removing data from an optical disc by using a laser according to an embodiment of the present invention.
According to some embodiments of the present invention, as shown in fig. 2, the present invention further includes a dust removing device 20 and a protecting cover 18, the motor 11 is fixedly disposed on the host 19, the host 19 is a main body component of the cleaning device and is used for carrying and fixing various functional components, the dust removing device 20 is disposed on a side surface or an upper portion of the clamp 10, the protecting cover 18 is covered above the clamp 10, when the protecting cover 18 is closed, the laser emitted by the clamp 10 and the laser 3, the dust removing device 20 and the optical disc 9 can be completely isolated from an external space, so as to prevent dust flying during the cleaning operation from causing environmental pollution and affecting the health of the operator, and prevent the laser from damaging the health of the operator, and at the same time, the dust removing device 20 collects and centrally processes the dust during the cleaning process of the optical disc 9.
The data storage area of the optical disc 9 is a microscopic regular groove-shaped structure, the characteristic dimension of the groove-shaped structure is in the micron order and is close to the laser wavelength emitted by the laser 3, therefore, the laser acts on the optical disc 9 and has obvious transmission diffraction and reflection diffraction effects, the laser can form transmission and reflection in the action area of the optical disc 9 at a larger diffraction angle, which is obviously different from the conventional laser manufacturing process, and in order to ensure the safety of operators and operating equipment, the protective cover 18 must isolate the action areas of the laser and the optical disc 9 from the external space in an all-around way.
According to some embodiments of the invention, there is further included a sudden stop device connected to the motor 11 and the laser 3, respectively, for shutting down the motor 11 and the laser 3 in case of an emergency. When an emergency occurs, the operator can instantly turn off the laser or the whole device through the emergency stop button 4, so as to prevent further loss.
The invention also discloses a method for clearing the optical disc data by adopting the cleaning device for clearing the optical disc data by the laser, which comprises the following steps:
switching on a power supply 1, and starting a cleaning device;
the optical disk 9 to be processed is placed on a clamp 10 and fixed;
setting the scanning frequency and the scanning width of the one-dimensional galvanometer 7, setting the rotating speed of the motor 11, and setting the output parameters of the laser 3;
starting the laser 3 and the motor 11 to perform laser scanning on the optical disk 9 to complete data clearing;
taking out the processed optical disk 9, closing the equipment or putting in a new optical disk 9 to be processed for repeated operation;
the starting time of the motor is 1-3 seconds earlier than the starting time of the laser emission, and the laser emission time of the laser is 1 second additionally added to the time of one circle of rotation of the optical disc.
According to some embodiments of the present invention, after the cleaning device is started, the indication light of the laser 3 is started, the parameters of the one-dimensional galvanometer 7, the laser 3 and the motor 11 are set or adjusted by the auxiliary light spot of the indication light on the optical disc 9 to be processed, after the parameter setting is completed, the indication light is turned off, and the laser 3 is started to output laser light.
According to some embodiments of the present invention, after setting the scanning frequency and the scanning width of the one-dimensional galvanometer 7, setting the rotation speed of the motor 11, and setting the output parameters of the laser 11, the method further comprises turning on the dust removing device 20 and turning off the protective cover 18.
The technical solutions of the present application are further described below with reference to specific examples, and it should be understood that the specific examples are only for facilitating the better understanding of the present solutions by those skilled in the art, and should not be taken as limiting the scope of the present invention.
The clearing of the disc data is performed by the following steps S1-S8.
According to some embodiments of the invention, step S1: the power supply is switched on, and the power supply 1 and the controller power supply 12 are powered on.
According to some embodiments of the invention, step S2: after the controller 16 is powered on, the system is started, the touch screen 17 displays the tool state and the initial state of the parameter list, and the parameters comprise laser power, repetition frequency, pulse width, galvanometer scanning frequency, galvanometer scanning width, motor 11 pre-starting time T1 and laser emitting time T2;
after the laser 3 is powered on, indicating light is emitted;
the one-dimensional galvanometer 7 is synchronously started along with the controller 16 and is matched with the indicating light emitted by the laser 3 to display a laser scanning track.
According to some embodiments of the invention, step S3: setting the frequency of the output pulse signal of the signal generator 14 to control the rotating speed of the motor 11;
the set range of the rotating speed of the motor is 5 s/rotation to 50 s/rotation.
According to some embodiments of the invention, step S4: setting parameters of laser power, repetition frequency, pulse width, galvanometer scanning frequency and galvanometer scanning width on the controller 16; the laser power setting range is 10% -100%, and optionally, the laser power is 50%; repetition frequency setting range: 10 kHz-200 kHz, and optionally, the repetition frequency is 100 kHz; the setting range of the pulse width is 10 ns-200 ns, and optionally, the pulse width is set to 100 ns; the scanning frequency of the one-dimensional galvanometer 7 is 30Hz-120Hz, and optionally, the scanning frequency of the one-dimensional galvanometer 7 is 80 Hz; the scanning width of the one-dimensional galvanometer 7 is set within the range of 20-50mm according to the width of a data storage area of the optical disk 9; the preset starting time T1 of the motor 11 is set within the range of 1s-3s, and the laser emitting time T2 is equal to the time of 1 revolution of the motor plus 1 s.
Wherein, the motor 11 must be started in advance before the laser 3, and the action process of the laser and the optical disc 9 is as follows: the laser is focused on the polycarbonate surface of the optical disc 9 through an optical system, the polycarbonate can have a transmittance of more than 99% to a solid laser with a wavelength of 1064nm, the laser beam penetrates through the polycarbonate and the dye layer and reaches the metal reflecting layer of the optical disc 9, and the reflecting layer absorbs heat to ablate and destroy the dye layer which is next to the metal reflecting layer and is used for storing data.
However, when the laser energy is large enough, for example, when the energy density or peak power density of the pulse laser reaches a certain value, the polycarbonate can be destroyed, so that a series of opaque ablation traces are formed, the laser cannot effectively penetrate through the polycarbonate layer, the destruction degree of the dye layer is weakened, and the data clearing effect is reduced. Especially, at the moment of starting the optical disc, the speed of the optical disc is increased from 0 to a set speed, which requires a certain time, and if the laser is emitted, the polycarbonate is easily damaged, an opaque ablation trace is formed, and the cleaning effect of the dye layer is affected, so that the laser can be emitted only after the optical disc 9 reaches a set rotating speed in advance.
According to some embodiments of the invention, step S5: the optical disk 9 to be cleared of data is placed on the clamp 10, the printing layer of the optical disk 9 is downward, the reflecting surface is upward, and the protective cover 18 is closed.
According to some embodiments of the invention, step S6: the dust removing device 20 is turned on.
According to some embodiments of the invention, step S7: the switch button 15 is turned on, the logical relationship is set according to the program of the controller 16, the motor 11 starts to rotate, the indication light is turned off after the rotation time T1, the laser 3 emits laser light, and the laser 3 is turned off after the time T2.
According to some embodiments of the invention, step S8: the switch button 15 is closed, the motor 11 stops rotating, the protective cover 18 is opened, the optical disk 9 is replaced to carry out cleaning of the next optical disk again, or the power supply 1 is turned off to finish the laser cleaning process, and the dust removal device 20 is turned off.
Wherein, in the process of clearing the data of the optical disk 9 by the laser, if an emergency occurs, the emergency stop button 4 can be pressed, and the laser 3 stops emitting the laser;
in step S7, after the switch button 15 is turned on, the switch button 15 is turned off at any time, the laser 3 stops emitting laser, the motor 11 stops rotating, and this mode can be used for process parameter testing.
The invention also provides another specific embodiment, and the specific scheme is as follows.
The embodiment relates to a radio frequency excitation CO of a DVD optical disk 2 A laser data erasing apparatus and method.
A laser 3 connected with the power supply 1, the power supply 1 providing DC power supply for the laser 3, the laser 3 exciting CO for radio frequency 2 A laser device.
The laser 3 generates laser, which is reflected to the beam shaping device 5 to expand beam through a spatial light path, and is focused on the optical disc 9 to be processed through the one-dimensional galvanometer 7 and the field lens 6. The laser beam forms a linear track on the surface of the optical disc 9 in the swinging process of the one-dimensional galvanometer 7, and data removal is carried out on the optical disc 9.
The galvanometer driving card 8 is connected with a controller power supply 12 to provide power for a motor of the one-dimensional galvanometer 7, the galvanometer motor driving card 8 is connected with a controller 16, the swing frequency and the swing amplitude of the one-dimensional galvanometer 7 are controlled through a control program, and the logic sequence of starting and stopping the one-dimensional galvanometer (7) is controlled through the program design of the controller 16.
The optical disk 9 is placed on the clamp 10, the clamp 10 is fixed on the output shaft of the motor 11 and is coaxial with the output shaft of the motor 11, the optical disk 9 is driven to rotate when the motor 11 rotates, and the cleaning of the data storage area of the whole optical disk 9 is completed by matching the linear swing of the laser beam.
The motor 11 is provided with a control signal and direct current by a motor driver 13, the motor driver 13 is connected with a controller 16, and the start-stop logic sequence of the laser emitted by the motor 11 and the laser 3 is set through the programming of the controller 16.
The motor driver 13 is connected with the signal generator 14, and the signal generator 14 is used for setting the signal frequency so as to accurately control the rotating speed of the motor 11.
The controller 16 is connected to the switch button 15 for turning on the apparatus to start the laser erasing operation of the optical disc 9, and the internal operation logic sequence is completed by the programming of the controller 16.
The laser 3 is connected to a controller 16 for designing laser 3 parameters including power, pulse width, repetition rate parameters.
The laser 3 is connected with the emergency stop button 4, abnormal conditions occur, and the laser is turned off through the emergency stop button 4, so that the safety of an operator and equipment is ensured.
Fig. 3 schematically shows a flow chart of a specific embodiment of the present invention.
In the apparatus for erasing data on an optical disc using a pulsed laser according to the present invention, as shown in FIG. 3, the method for erasing data on an optical disc using a pulsed laser includes operations S1-S8.
According to some embodiments of the invention, operation S1: the power supply is switched on, and the power supply 1 and the controller power supply 12 are powered on.
According to some embodiments of the invention, operation S2: after the controller 16 is electrified, the system is started, the touch screen 17 displays the tool state and the initial state of a parameter list, and the parameters comprise laser power, repetition frequency, pulse width, galvanometer scanning frequency, galvanometer scanning width, motor pre-starting time T1 and laser emitting time T2; after the laser 3 is powered on, indicating light is emitted; the one-dimensional galvanometer 7 is synchronously started along with the controller 16 and is matched with the indicating light emitted by the laser 3 to display a laser scanning track.
According to some embodiments of the invention, operation S3: setting the frequency of the output pulse signal of the signal generator 14 to control the rotating speed of the motor 11; the rotation speed of the motor 11 is set within a range of 30 s/revolution.
According to some embodiments of the invention, operation S4: the controller can be provided with parameters of laser power, repetition frequency, pulse width, galvanometer scanning frequency and galvanometer scanning width; the laser power is set to 80%, and the repetition frequency is set to 35 kHz; the scanning frequency of the galvanometer is 60Hz, and the scanning width of the galvanometer is 45 mm; the motor pre-starting time T1 is set to 2s, and the laser emitting time T2 is set to 31 s.
According to some embodiments of the invention, operation S5: the DVD disk 9 with the data to be cleared and the recorded file is placed on the clamp 10, the printing layer of the disk 9 is downward, the reflecting surface is upward, and the protective cover 18 is closed.
According to some embodiments of the invention, operation S6: the dust removing device 20 is turned on.
According to some embodiments of the invention, operation S7: the switch button 15 is turned on, the logical relationship is set according to the program of the controller 16, the motor 9 starts to rotate, the indicating light is turned off after the rotation time T1, the laser 3 emits laser, and after the time T2, the laser 3 is turned off.
According to some embodiments of the invention, operation S8: the switch button 15 is closed, the motor 11 stops rotating, the protective cover 18 is opened, the optical disk 9 is taken out, and the dust removing device 20 is closed.
According to the technical scheme, the cleaning device for removing the data of the optical disk by adopting the laser can realize the data removal of the optical disks such as CD-ROM, CDR, DVD, BD and the like, the laser emitted by the laser is changed into linear reciprocating scanning by the one-dimensional galvanometer, and the motor is matched to drive the clamp and the optical disk to rotate so as to complete the scanning of the whole surface of the optical disk by the laser.
So far, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. In addition, the above definitions of the components are not limited to the specific structures, shapes or manners mentioned in the embodiments, and those skilled in the art may easily modify or replace them.
It is also noted that, unless otherwise indicated, the numerical parameters set forth in the specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing dimensions, range conditions, and so forth, used in the specification and claims are to be understood as being modified in all instances by the term "about". Generally, the expression is meant to encompass variations of ± 10% in some embodiments, 5% in some embodiments, 1% in some embodiments, 0.5% in some embodiments by the specified amount.
It will be appreciated by a person skilled in the art that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present invention are possible, even if such combinations or combinations are not explicitly recited in the present invention. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present invention may be made without departing from the spirit and teachings of the invention. All such combinations and/or associations fall within the scope of the present invention.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A cleaning apparatus for removing data from an optical disc by using a laser, comprising:
a laser for emitting laser light;
the one-dimensional galvanometer is used for deflecting the laser to an optical disc to be processed and controlling the scanning track of the laser on the optical disc to be linear;
a clamp for clamping and fixing the optical disc to be processed;
an output shaft of the motor is connected with the clamp, and the output shaft of the motor is coaxial with the clamp so as to drive the clamp and the optical disk clamped on the clamp to rotate;
and the field lens is arranged between the one-dimensional galvanometer and the clamp and is used for focusing the laser deflected by the one-dimensional galvanometer on the optical disc to be processed.
2. The cleaning device according to claim 1, wherein the laser is transmitted between the laser and the one-dimensional galvanometer through an optical fiber or through a spatial light path.
3. The cleaning device of claim 1, wherein the laser is a continuous laser or a pulsed laser, the laser comprising one of: solid state lasers, fiber lasers, semiconductor lasers, gas lasers or disk lasers.
4. The cleaning device according to claim 1, wherein a beam shaping device is further disposed between the laser and the one-dimensional galvanometer, and the beam shaping device is configured to collimate and expand the laser light emitted by the laser into parallel beams.
5. The cleaning device according to claim 1, further comprising a controller, wherein the controller is connected to the laser, the motor, and the one-dimensional galvanometer respectively, and drives or adjusts the operation of the laser, the motor, and the one-dimensional galvanometer.
6. The cleaning device of claim 1, further comprising a dust removing device disposed on a side or above the clamp, and a protective cover disposed above the clamp, wherein the protective cover completely isolates the laser and the optical disc action space from an external space when closed.
7. The cleaning device of claim 1, further comprising a hard stop for shutting off the motor and the laser in an emergency.
8. A method for erasing data on an optical disc using the cleaning apparatus for erasing data on an optical disc using a laser according to any one of claims 1 to 7, comprising:
switching on a power supply and starting the cleaning device;
placing the optical disk to be processed on a clamp for fixing;
setting the scanning frequency and the scanning width of a one-dimensional galvanometer, setting the rotating speed of a motor, and setting the output parameters of a laser;
starting the laser and the motor to perform laser scanning on the optical disc to complete data clearing;
taking out the processed optical disk, closing the equipment or putting in a new optical disk to be processed for repeated operation;
the starting time of the motor is 1-3 seconds earlier than the starting time of the laser, and the time of the laser emitted by the laser is 1 second additionally added to the time of one circle of rotation of the optical disc.
9. The method according to claim 8, wherein after the cleaning device is started, an indication light of a laser is started, parameters of the one-dimensional galvanometer, the laser and the motor are set or adjusted by a light spot of the indication light on the optical disc to be processed, and after the parameter setting is completed, the indication light is turned off, and the laser is started to output laser.
10. The method of claim 8, further comprising turning on a dust removing device and turning off a shield after setting the scanning frequency and the scanning width of the one-dimensional galvanometer, setting the rotation speed of the motor, and setting the output parameters of the laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181566.9A CN114905139A (en) | 2021-02-09 | 2021-02-09 | Device and method for clearing CD data by laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181566.9A CN114905139A (en) | 2021-02-09 | 2021-02-09 | Device and method for clearing CD data by laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114905139A true CN114905139A (en) | 2022-08-16 |
Family
ID=82761288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110181566.9A Pending CN114905139A (en) | 2021-02-09 | 2021-02-09 | Device and method for clearing CD data by laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114905139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116550727A (en) * | 2023-07-11 | 2023-08-08 | 江苏亮点光电科技有限公司 | Method and system for controlling laser destruction of optical disc |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051446A (en) * | 1989-09-28 | 1991-05-15 | 坦迪公司 | But signal maintenance/reflection horizon record/can wipe the light medium |
| JPH1027344A (en) * | 1996-07-08 | 1998-01-27 | Ricoh Co Ltd | Method for initializing optical disk |
| CN1646325A (en) * | 2002-02-15 | 2005-07-27 | 索尼株式会社 | Rewritable optical information recording medium and recording/reproducing method, recording/reproducing device |
| CN101315776A (en) * | 2007-05-28 | 2008-12-03 | 建兴电子科技股份有限公司 | Method for destroying CD data by CD driver |
| CN103974832A (en) * | 2011-12-05 | 2014-08-06 | 株式会社理光 | Image erasing apparatus and image erasing method |
| CN104959349A (en) * | 2015-07-27 | 2015-10-07 | 苏州市星科四达激光科技有限公司 | Laser cleaning device |
| CN205236562U (en) * | 2015-11-27 | 2016-05-18 | 武汉市凯瑞迪激光技术有限公司 | Solid pulsed laser belt cleaning device |
| CN110813935A (en) * | 2019-10-14 | 2020-02-21 | 深圳信息职业技术学院 | Laser cleaning equipment and laser cleaning method for complex component |
| CN210172112U (en) * | 2019-05-17 | 2020-03-24 | 上海铁路通信有限公司 | Intelligent control system of laser cleaning equipment |
| CN111871964A (en) * | 2020-06-10 | 2020-11-03 | 中国电力科学研究院有限公司 | Laser cleaning device and method for cleaning surface of workpiece with axisymmetric structure |
-
2021
- 2021-02-09 CN CN202110181566.9A patent/CN114905139A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051446A (en) * | 1989-09-28 | 1991-05-15 | 坦迪公司 | But signal maintenance/reflection horizon record/can wipe the light medium |
| JPH1027344A (en) * | 1996-07-08 | 1998-01-27 | Ricoh Co Ltd | Method for initializing optical disk |
| CN1646325A (en) * | 2002-02-15 | 2005-07-27 | 索尼株式会社 | Rewritable optical information recording medium and recording/reproducing method, recording/reproducing device |
| CN101315776A (en) * | 2007-05-28 | 2008-12-03 | 建兴电子科技股份有限公司 | Method for destroying CD data by CD driver |
| CN103974832A (en) * | 2011-12-05 | 2014-08-06 | 株式会社理光 | Image erasing apparatus and image erasing method |
| CN104959349A (en) * | 2015-07-27 | 2015-10-07 | 苏州市星科四达激光科技有限公司 | Laser cleaning device |
| CN205236562U (en) * | 2015-11-27 | 2016-05-18 | 武汉市凯瑞迪激光技术有限公司 | Solid pulsed laser belt cleaning device |
| CN210172112U (en) * | 2019-05-17 | 2020-03-24 | 上海铁路通信有限公司 | Intelligent control system of laser cleaning equipment |
| CN110813935A (en) * | 2019-10-14 | 2020-02-21 | 深圳信息职业技术学院 | Laser cleaning equipment and laser cleaning method for complex component |
| CN111871964A (en) * | 2020-06-10 | 2020-11-03 | 中国电力科学研究院有限公司 | Laser cleaning device and method for cleaning surface of workpiece with axisymmetric structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116550727A (en) * | 2023-07-11 | 2023-08-08 | 江苏亮点光电科技有限公司 | Method and system for controlling laser destruction of optical disc |
| CN116550727B (en) * | 2023-07-11 | 2023-10-10 | 江苏亮点光电科技有限公司 | Method and system for controlling laser destruction of optical disc |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4287641B2 (en) | How to make a die | |
| TWI819132B (en) | Laser processing device and laser processing method | |
| US6859335B1 (en) | Method of programmed displacement for prolong usage of optical elements under the irradiation of intensive laser beams | |
| JP5309369B2 (en) | How to finish the surface of a disk drive component | |
| JP2008514433A (en) | Vehicle marking device | |
| CN114905139A (en) | Device and method for clearing CD data by laser | |
| JP7146770B2 (en) | Method and system for extending the life of optical components in laser processing equipment | |
| CN109365410B (en) | Processing head device for realizing efficient laser cleaning and cleaning method | |
| JP7411566B2 (en) | Laser processing equipment and laser processing method | |
| JP2005088068A (en) | Laser beam machining apparatus and laser beam machining method | |
| JPH11780A (en) | Laser water jet composite cutting device | |
| JPH06131706A (en) | Information recorder | |
| JP2010093244A (en) | Method and apparatus for forming scribe line for cleaving | |
| KR102265517B1 (en) | Composite laser cutter with fiber laser and CO₂laser | |
| JP3874284B2 (en) | Laser welding machine welding status confirmation device | |
| JPH0997432A (en) | Data destroying device for optical disk and optical disk writing-in and reading-out device | |
| JP4577237B2 (en) | Storage medium destruction method, storage device having storage medium destruction means, and storage medium destruction program | |
| TW202400339A (en) | Laser machining device and laser machining method | |
| US20050040149A1 (en) | Single head laser high throughput laser shock peening | |
| EP3752316A1 (en) | System and method for enhancement of laser material processing via modulation of laser light intensity | |
| JPS5978793A (en) | Laser working device | |
| JP4698628B2 (en) | Data erasing method and data erasing apparatus for optical disc media | |
| CN217019014U (en) | Laser processing system and beam rotating device | |
| JPH11213425A (en) | Optical disk device | |
| JP2001038484A (en) | Injection optical system for laser processing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |