CN217115153U - Adjusting circuit and laser processing equipment - Google Patents
Adjusting circuit and laser processing equipment Download PDFInfo
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- CN217115153U CN217115153U CN202221325178.XU CN202221325178U CN217115153U CN 217115153 U CN217115153 U CN 217115153U CN 202221325178 U CN202221325178 U CN 202221325178U CN 217115153 U CN217115153 U CN 217115153U
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Abstract
The application relates to the technical field of semiconductor lasers, in particular to an adjusting circuit and laser processing equipment. The adjusting circuit comprises a laser diode, a power adjusting module, a power module and a feedback module, wherein the feedback module is used for monitoring the actual optical power of the laser diode, the power adjusting module receives the actual optical power of the laser diode, and the power adjusting module is used for keeping the laser diode to output the set optical power. This application is supplied power for power regulation module through power module, power regulation module is laser diode and feedback module power supply, feedback module can direct detection laser diode's real-time luminous power, and feedback module feeds back the luminous power that detects to power regulation module, make power regulation module can adjust laser diode's output luminous power in real time, make laser diode's output luminous power maintain in less within range fluctuation, with this stability that promotes laser diode output luminous power.
Description
Technical Field
The utility model relates to a semiconductor laser technical field particularly, relates to an adjusting circuit.
Background
The current closed loop is generally adopted as feedback in a driving circuit of the existing semiconductor laser, but generally, after the current changes, the temperature also changes correspondingly, and meanwhile, the temperature change further affects the stability of the light emitting power of the laser diode, and correspondingly, the power of the laser diode fluctuates to a greater extent along with factors such as the service time and the ambient temperature when the laser diode emits light.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem adopt the laser diode luminous power unstability that current feedback leads to.
In order to solve the above problems, an aspect of the present invention provides a regulating circuit, which includes a laser diode, a power regulating module, a power module and a feedback module, wherein the laser diode is connected to the power regulating module, and the power regulating module is used for keeping the laser diode to set an optical power output; the power supply module is connected with the power regulation module and supplies power to the power regulation module; the feedback module is connected with the power adjusting module, the power adjusting module supplies power to the feedback module, the feedback module is used for monitoring the actual light power of the laser diode, and the power adjusting module receives the actual light power of the laser diode.
Optionally, the power regulation module includes a driver chip, a first input end, a second input end, a sixth pin and a twentieth pin of the driver chip are connected to the power module, a third pin, a seventh pin, an eighth pin, a tenth pin, a thirteenth pin, a sixteenth pin, an eighteenth pin, a nineteenth pin and a twenty-first pin of the driver chip are grounded, a first output end of the driver chip is connected to the laser diode, a second output end of the driver chip is connected to the first end of the feedback module, and a sixteenth pin of the driver chip is connected to the second end of the feedback module.
Optionally, the adjusting circuit further includes a third capacitor, a fifteenth capacitor, and a first resistor, where one end of the fifteenth capacitor is connected to a sixteenth pin of the driver chip, the other end of the fifteenth capacitor is connected to the first output end of the driver chip, a first end of the third capacitor is connected to the sixteenth pin of the driver chip, a second end of the first resistor is connected to the fifteenth pin of the driver chip, and a second end of the third capacitor is connected to the first end of the first resistor.
Optionally, the power adjustment module further includes a first adjustment component, a first end of the first adjustment component is connected to the first output end of the driver chip, a second end of the adjustment component is connected to the laser diode, and the first adjustment component is configured to change the first output end of the driver chip from voltage output to current output.
Optionally, the first adjusting component includes a sixth resistor and a seventh resistor, a first end of the sixth resistor is connected to the first output end of the driver chip, a second end of the sixth resistor is connected to the first end of the seventh resistor, and a second end of the seventh resistor is connected to the laser diode.
Optionally, the power adjustment module further includes a third adjustment assembly, where the third adjustment assembly is connected to the first adjustment assembly, and the third adjustment assembly is configured to adjust the set optical power of the laser diode.
Optionally, the adjusting circuit further includes a temperature adjusting module, the temperature adjusting module is connected to the power adjusting module and the power module respectively, the power adjusting module is used for controlling the temperature adjusting module to work, the power module is used for supplying power to the temperature adjusting module, and the temperature adjusting module is used for maintaining a set temperature for the laser diode.
Optionally, the adjusting circuit further includes a detection component, the detection component is connected to the temperature adjusting module, the detection component is used for detecting the actual temperature of the laser diode, and the temperature adjusting module is used for controlling the heating or cooling of the temperature adjusting module according to the actual temperature and the set temperature.
Optionally, the adjusting circuit further includes a second adjusting component, the second adjusting component is connected to the temperature adjusting module, and the second adjusting component is configured to adjust a wavelength of the laser diode.
On the other hand, the utility model also provides a laser beam machining equipment, including as above regulating circuit.
Compared with the prior art, the embodiment of the utility model provides an adjusting circuit beneficial effect who has is:
the power supply module supplies power to the power adjusting module, the power adjusting module supplies power to the laser diode and the feedback module, the feedback module can directly detect the real-time optical power of the laser diode, the feedback module feeds the detected optical power back to the power adjusting module, the power adjusting module can adjust the output optical power of the laser diode in real time, the output optical power of the laser diode is maintained to fluctuate within a small range, and the stability of the output optical power of the laser diode is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a regulating circuit according to the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of the driving chip of the present invention;
fig. 3 is a schematic circuit diagram of an embodiment of the temperature adjustment module according to the present invention.
Detailed Description
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
The terms "first", "second", "third", "fourth", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, features defined as "first," "second," "third," "fourth," etc. may explicitly or implicitly include at least one such feature.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1, an embodiment of the present invention provides a regulating circuit, which includes a laser diode, a power regulating module, a power module and a feedback module, wherein the laser diode is connected to the power regulating module, and the power regulating module is used for maintaining the laser diode to set an optical power output; the power supply module is connected with the power regulation module and supplies power to the power regulation module; the feedback module is connected with the power adjusting module, the power adjusting module supplies power to the feedback module, the feedback module is used for monitoring the actual optical power of the laser diode, the power adjusting module receives the actual optical power of the laser diode, and the power adjusting module is used for adjusting the output optical power of the laser diode according to the set optical power and the actual optical power.
A Laser Diode (LD) is a Laser used in conjunction with an optical fiber to construct an optical communication system, and it can be directly used as a light source for optical communication, and also can be used as a pump source for a Laser and an amplifier, and has a very important position in the field of Laser engineering research. It has the characteristics of a semiconductor device: small volume, simple structure, high efficiency and direct modulation.
Specifically, the feedback module may be a photodiode PD, which is a semiconductor device composed of a PN junction and has a unidirectional conductive characteristic. The photodiode PD operates under the action of a reverse voltage, and the generated current is called photocurrent when the photodiode is irradiated by light of a general illumination. If a load is connected to the external circuit, an electrical signal is obtained from the load, and the electrical signal changes in response to the change in light.
The power regulating module supplies power to the laser diode so that the laser diode emits light. After the laser diode emits light, the photodiode PD detects the light power of the laser diode and generates current, and the power adjusting module receives the current generated by the photodiode PD and converts the received current into voltage. When the optical power of the laser diode is increased, the current generated by the photodiode PD is also increased correspondingly; when the optical power of the laser diode is reduced, the current generated by the photodiode PD is also reduced accordingly.
The power supply module supplies power to the power adjusting module, the power adjusting module supplies power to the laser diode and the feedback module, the feedback module can directly detect the real-time optical power of the laser diode, the feedback module feeds the detected optical power back to the power adjusting module, the power adjusting module can adjust the output optical power of the laser diode in real time, the output optical power of the laser diode is maintained to fluctuate within a small range, and the stability of the output optical power of the laser diode is improved.
As shown in fig. 1 and 2, the power regulation module includes a driver chip U1, a first input terminal, a second input terminal, a sixth pin, and a twentieth pin of the driver chip U1 are connected to the power module, a third pin, a seventh pin, an eighth pin, a tenth pin, a thirteenth pin, a sixteenth pin, an eighteenth pin, a nineteenth pin, and a twenty-first pin of the driver chip U1 are grounded, a first output terminal of the driver chip U1 is connected to the laser diode, a second output terminal of the driver chip U1 is connected to the first end of the feedback module, and a sixteenth pin of the driver chip U1 is connected to the second end of the feedback module.
The model of the driving chip U1 can be TPS7A 87. The driving chip U1 has two output terminals, and a first output terminal (a fourteenth pin and a fifteenth pin) of the driving chip U1 is connected to the laser diode, and is used for supplying power to the laser diode, so as to ensure normal operation of the laser diode. The second output terminal (eleventh pin and twelfth pin) of the driving chip U1 is connected to the photodiode PD, and is configured to output a fixed voltage and mainly supply power to the photodiode PD.
A 0.8V voltage source is arranged in the positive input end of a comparator in the driving chip U1; when the voltage value corresponding to the current of the photodiode PD is greater than 0.8V, the driving chip U1 starts to decrease the output of the fourteenth pin and the fifteenth pin, and the optical power of the laser diode decreases. When the voltage value corresponding to the current of the photodiode PD is smaller than 0.8V, the driving chip U1 starts to increase the output of the fourteenth pin and the fifteenth pin, and the optical power of the laser diode increases.
Meanwhile, the photodiode PD detects the optical power of the laser diode in real time and feeds the optical power back to the driving chip U1, and the driving chip U1 can adjust the output of the fourteenth pin and the fifteenth pin of the driving chip U1 according to the detected optical power of the laser diode in real time, so that the output optical power of the laser diode connected with the fourteenth pin and the fifteenth pin of the driving chip U1 is basically balanced.
As shown in fig. 1 and fig. 2, the driver chip U1 has two input terminals, and a first input terminal (a first pin and a second pin) of the driver chip U1 is connected to the power module. The second input terminal (the fourth pin and the fifth pin) of the driver chip U1 is connected to the power supply module. A first capacitor C1, a second capacitor C2 and a fifth capacitor C5 may be installed between the first input terminal (the first pin and the second pin) of the driving chip U1 and the third pin of the driving chip U1, and the first capacitor C1, the second capacitor C2 and the fifth capacitor C5 are filter capacitors.
The power supply is filtered through the three capacitors, circuit debugging can be carried out according to clutter output by the power supply, and the amplitude-frequency curve is better due to matching of different capacitors. Similarly, a ninth capacitor C9, a tenth capacitor C10 and an eleventh capacitor C11 are installed between the first output terminal (the fourteenth pin and the fifteenth pin) of the driving chip U1 and the thirteenth pin of the driving chip U1, and the ninth capacitor C9, the tenth capacitor C10 and the eleventh capacitor C11 are also filter capacitors. The three capacitors are used for filtering the output voltage, circuit debugging can be carried out according to the output condition of the driving chip U1, and the amplitude-frequency curve is better due to the matching of the different capacitors.
A twelfth capacitor C12 and a fourteenth capacitor C14 may be mounted at the second output terminal (the eleventh pin and the twelfth pin) of the driving chip U1 and the thirteenth pin of the driving chip U1, and the twelfth capacitor C12 and the fourteenth capacitor C14 are output voltage filter capacitors; a second resistor R2 and a fifth resistor R5 may be installed at the second output terminal (the eleventh pin and the twelfth pin) and the second feedback terminal (the tenth pin), so that the output voltage may be divided by the second resistor R2 and the fifth resistor R5 to adjust the magnitude of the output voltage. Meanwhile, a sixth capacitor C6 may be installed at the second output terminal (eleventh pin and twelfth pin) and the second feedback terminal (tenth pin), and output overshoot may be prevented by the sixth capacitor C6. An eighth capacitor C8 is further mounted on the seventh pin of the driver chip U1, and a seventh capacitor C7 is further mounted on the nineteenth pin of the driver chip U1. The seventh capacitor C7 and the eighth capacitor C8 are two-path noise reduction capacitors respectively, and noise reduction of a loop is facilitated by selecting a proper capacitance value.
As shown in fig. 2, the adjusting circuit may further include a third capacitor C3, a fifteenth capacitor C15 and a first resistor R1, one end of the fifteenth capacitor C15 is connected to the sixteenth pin of the driving chip U1, the other end of the fifteenth capacitor C15 is connected to the first output end of the driving chip U1, the first end of the third capacitor C3 is connected to the sixteenth pin of the driving chip U1, the second end of the first resistor R1 is connected to the fifteenth pin of the driving chip U1, and the second end of the third capacitor C3 is connected to the first end of the first resistor R1.
In the adjusting process, the feedback module is used for adjusting the optical power of the laser diode, so that the problems of overlong loop, too slow loop feedback, oscillation of the whole loop and the like can occur; therefore, the third capacitor C3, the fifteenth capacitor C15 and the first resistor R1 are added to reduce the loop response time and suppress the loop oscillation.
As shown in fig. 1 and fig. 2, the power regulation module further includes a first regulation component, a first end of the first regulation component is connected to the first output end of the driver chip U1, a second end of the regulation component is connected to the laser diode, and the first regulation component is configured to change the first output end of the driver chip U1 from a voltage output to a current output.
The first regulating component may be composed of one or more resistors, and the first output terminal (the fourteenth pin and the fifteenth pin) of the driving chip U1 is changed from voltage output to current output by selecting the first regulating component with a proper resistance value. In an embodiment of the present invention, the first adjusting component includes a sixth resistor R6 and a seventh resistor R7, and the sixth resistor R6 and the seventh resistor R7 are current-limiting resistors, which can select a matching resistance value according to different working currents of the laser diode. For example, when different laser diodes are replaced, the maximum operating currents corresponding to the different laser diodes are different, and then the different laser diodes can be adapted by setting the six resistors R6 and the seventh resistor R7 with different resistance values. A first end of the sixth resistor R6 is connected to the first output end of the driver chip U1, a second end of the sixth resistor R6 is connected to a first end of the seventh resistor R7, and a second end of the seventh resistor R7 is connected to the laser diode.
The subsequent debugging is convenient for through setting up sixth resistance R6 and seventh resistance R7, and in the debugging process, if there is not the definite value resistance of suitable resistance to use, through reserving two resistance positions, through six resistance R6 and the seventh resistance R7 of two different resistances of series connection with this realization its adaptation.
As shown in fig. 1 and 3, the adjusting circuit further includes a temperature adjusting module, the temperature adjusting module is respectively connected to the power adjusting module and the power module, the power adjusting module is configured to control the temperature adjusting module to work, the power module is configured to supply power to the temperature adjusting module, and the temperature adjusting module is configured to maintain a set temperature for the laser diode.
The temperature adjusting module can be a semiconductor cooler (TEC) and is made by utilizing the Peltier effect of semiconductor materials. The peltier effect is a phenomenon in which when a direct current passes through a couple composed of two semiconductor materials, one end absorbs heat and the other end releases heat. The heavily doped N-type and P-type bismuth telluride are mainly used as semiconductor materials of TEC, and the bismuth telluride elements are electrically connected in series and generate heat in parallel. The TEC comprises a number of P-type and N-type pairs (sets) connected together by electrodes and sandwiched between two ceramic electrodes; when current flows through the TEC, heat generated by the current is transferred from one side of the TEC to the other side of the TEC, and a "hot" side and a "cold" side are generated on the TEC, which is the heating and cooling principle of the TEC.
As shown in fig. 1 and 3, the adjusting circuit further includes a detection component, the detection component is connected to the temperature adjusting module, the detection component is used for detecting the actual temperature of the laser diode, and the temperature adjusting module is used for controlling the temperature adjusting module to heat or cool according to the actual temperature and the set temperature.
The detection component can be a thermistor Rntc, the thermistor Rntc is used for feeding back the temperature of the laser diode, the laser diode is arranged on the ALN substrate, the ALN substrate has good thermal conductivity, and the thermistor Rntc is used for detecting the ALN substrate so as to indirectly measure the temperature of the laser diode. The temperature and the resistance value are in one-to-one correspondence, for example, the thermistor Rntc in the embodiment has a corresponding resistance value of 10k Ω at 25 ℃ and 8.056k Ω at 30 ℃. The type of the thermistor Rntc can be selected correspondingly according to actual needs.
The TEC can comprise 1 error amplifier U4 and 2 power operational amplifiers U2 and U3, and the models of U2 and U3 can be OPA 567; the model number of U4 may be AD 623. By adopting the double operational amplifiers, the heat generated by driving the semiconductor refrigerator can be shared by the two power operational amplifiers, and the heat dissipation effect is better. According to a corresponding table of the resistance value and the temperature of the thermistor Rntc, the corresponding relation between the set temperature and the resistor can be obtained, and the temperature of the TEC is changed by setting the resistance value of the external resistor Rtemp; when a certain resistance value is set, the positive and negative input ends of the power operational amplifiers U2 and U3 generate voltage difference, the voltage difference is amplified by the error amplifier U4, the sixth pin of the error amplifier U4 outputs the voltage, meanwhile, the fifth pin and the sixth pin of the error amplifier U4 are used as the input ends of the power operational amplifier, and the voltage of the two ends of the output TEC and the current direction of the TEC are changed according to the voltage difference value of the fifth pin and the sixth pin of the error amplifier U4.
The temperature control mainly comprises two parts, wherein the first part is used for collecting the temperature of the thermistor Rntc by the error amplifier U4, then the temperature is compared with the set temperature, the voltage difference value of the two parts is amplified and then output by the sixth pin of the error amplifier U4, and the output voltage finally floats left and right by taking the voltage of the fifth pin (REF angle) of the error amplifier U4 as the reference; the eighth resistor R8 and the ninth resistor R9 are two voltage-dividing resistors, the third resistor R3 is a differential amplification resistor, the voltage of the fifth pin (REF angle) of the error amplifier U4 is provided after being divided by the tenth resistor R10 and the eleventh resistor R11 by the power module, the voltages of the fifth pin and the sixth pin of the error amplifier U4 are used as the positive and negative input ends of the signal input power operational amplifier U2 and the power operational amplifier U3, the seventeenth capacitor C17, the twelfth resistor R12, the eighteenth capacitor C18, the nineteenth capacitor C19 and the fourteenth resistor R14 are hardware PID control components, and the PID circuit can effectively solve overshoot and oscillation caused by hysteresis factors in a temperature control system; the system can smoothly reach the required temperature and stably maintain the temperature through the combination of proportion, integration and differentiation; a fifteenth resistor R15 is a feedback resistor, a seventeenth resistor R17 and an eighteenth resistor R18 are current-limiting resistors of the power operational amplifier U2 and the power operational amplifier U3, a twentieth capacitor C20 is provided, and a twenty-first capacitor C21 is a power supply filter capacitor of the power operational amplifier U2 and the power operational amplifier U3; the sixth pin output of the error amplifier U4 may be determined using the following equation:
vout = Vref + 100K Ω/R3 · (Vntc-Vtemp); when Vntc > Vtemp, Vout > Vref; otherwise, Vout < Vref; wherein Vout is the voltage at the sixth pin of the error amplifier U4; vref is the voltage at the fifth pin of error amplifier U4; vntc is the voltage of the thermistor Rntc; vtemp is the voltage of resistor Rtemp.
The voltage at two ends of the TEC is provided by two power operational amplifiers U2 and U3, and the two power operational amplifiers U2 and U3 can absorb current and output current; the direct current component voltage at the two ends of the TEC can be known according to a schematic diagram.
Vtec =2 × R14/R12 (Vref-Vout); according to the above formula can be simplified as:
Vtec=2*R14/R12*[100KΩ/R3*(Vtemp-Vntc)]；
the side where current flows from the TEC + to the TEC-is generally used as the cooling side, so:
Vtec=(Vtec+)－(Vtec-)；
therefore, when the resistance value of the thermistor Rntc is larger than the set resistance value, the set temperature is higher than the current temperature, and the TEC needs to be heated; as can be seen from the above formula, Rntc > Rtemp, Vntc > Vtemp, and Vtec < 0; the current direction flows from TEC-to TEC +, and the TEC is in a heating state; otherwise, refrigerating; the working principle of the TEC part is mainly qualitatively explained by a formula. Because the laser diode is arranged on the ALN substrate, the TEC is attached to the ALN substrate, and the temperature of the laser diode is indirectly adjusted by heating or cooling the ALN substrate.
As shown in fig. 1 and fig. 3, the adjusting circuit further includes a second adjusting component, the second adjusting component is connected to the temperature adjusting module, and the second adjusting component is configured to adjust the wavelength of the laser diode.
The second adjusting component may be a resistor Rtemp (with an initial value of about 10K), which is adjustable in resistance. The temperature of the temperature adjusting module can be changed by adjusting the resistance value of the resistor Rtemp, the temperature can affect the light emitting wavelength of the laser diode, and the light emitting wavelength of the laser diode can be adjusted by changing the temperature. The adjustment can be used in early-stage debugging, and after the early-stage debugging is finished, the resistance value of the resistor Rtemp under the current wavelength is determined. And a constant value resistor with a close resistance value is selected to be welded on a corresponding pin tube to replace the resistor Rtemp, so that later-stage practical use is facilitated. If the wavelength changes after long-term use, the previous constant-value resistor can be removed again, and the resistor Rtemp is connected with the temperature regulation module again. And after re-debugging, determining the resistance value of the resistor Rtemp under the currently debugged wavelength, and selecting a new constant-value resistor with the resistance value close to that of the resistor Rtemp to be welded on the corresponding pin tube.
As shown in fig. 1 and 2, the power adjusting module further includes a third adjusting component, where the third adjusting component is connected to the first adjusting component, and the third adjusting component is used to adjust the set optical power of the laser diode.
The third adjusting component may be a resistor Radj (initial value about 10K) with an adjustable resistance. The sixteenth pin of the driving chip U1 is connected to the resistor Radj in series, so that the sixteenth pin of the driving chip U1 is changed from voltage feedback to current feedback. The driving chip U1 outputs a fixed voltage 3V, which is filtered by the capacitor C4 and then input to the cathode of the photodiode PD, flows out from the anode of the photodiode PD, and flows into the resistor Radj after passing through the nineteenth resistor R19. The nineteenth resistor R19 can protect the photodiode PD, and when the resistance value of the resistor Radj is adjusted to 0, the photodiode PD is not broken down. The twenty-second capacitor C22 is a voltage-stabilizing filter capacitor, the twenty-second capacitor C22 is connected in parallel with a resistor Radj, and the current of the laser diode can be adjusted by adjusting the resistance value of the resistor Radj, so that the output light power of the laser diode can be changed.
The adjustment can be used in early-stage debugging, and after the early-stage debugging is completed, the resistance value of the resistor Radj under the current power is determined. And a constant value resistor with a close resistance value is selected to be welded on a corresponding pin tube to replace the resistor Radj, so that the later practical use is facilitated. If the power is changed after long-term use, the previous fixed-value resistor can be removed again, and the resistor Radj is connected with the temperature adjusting module again. And after re-debugging, determining the resistance value of the resistor Radj under the power after current debugging, and selecting a new constant-value resistor with the resistance value close to the resistance value to weld to the corresponding pin tube.
The whole debugging process comprises the following steps: the resistor Radj and the resistor Rtemp are adjusted to the maximum resistance value, at the moment, the power supply starts to be powered on, and the power supply module supplies power to the power adjusting module. At this time, the first output terminal (the fourteenth pin and the fifteenth pin) of the driver chip U1 does not output or the output current is so small that it is not enough to reach the threshold current of the laser diode; the second output terminal (the eleventh pin and the twelfth pin) of the driver chip U1 normally outputs a 3V standard voltage, which mainly supplies power to the photodiode PD, and secondly supplies power to the input terminal (the second pin and the third pin) of the error amplifier U4. The temperature adjusting module can work before the laser diode, the temperature adjusting module can firstly maintain the laser diode at a target temperature, so that the laser works more stably, the resistance value of the resistor Radj can be reduced at the moment, the light emitting power of the laser diode reaches a proper value, and finally the resistance value of the resistor Rtemp is adjusted to reach a proper wavelength. After the adjustment is finished, the fixed-value resistor is welded at the corresponding pin tube to replace the adjustable resistor Radj and the resistor Rtemp, so that the debugged equipment can be directly used.
Another embodiment of the present invention provides a laser processing apparatus, including the above-mentioned adjusting circuit. The beneficial effects of the laser processing equipment are the same as those of the regulating circuit, and are not described again here.
Although the present application has been disclosed above, the scope of protection of the present application is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and such changes and modifications will fall within the scope of the present invention.
Claims (10)
1. A regulation circuit, comprising:
a laser diode;
the power adjusting module is connected with the laser diode and used for keeping the laser diode to output set optical power;
the power supply module is connected with the power regulating module and supplies power to the power regulating module;
the feedback module is connected with the power adjusting module, the power adjusting module supplies power to the feedback module, the feedback module is used for monitoring the actual light power of the laser diode, and the power adjusting module receives the actual light power of the laser diode.
2. The regulating circuit according to claim 1, wherein the power regulating module comprises a driving chip, the first input terminal, the second input terminal, the sixth pin and the twentieth pin of the driving chip are connected to the power module, the third pin, the seventh pin, the eighth pin, the tenth pin, the thirteenth pin, the sixteenth pin, the eighteenth pin, the nineteenth pin and the twenty-first pin of the driving chip are grounded, the first output terminal of the driving chip is connected to the laser diode, the second output terminal of the driving chip is connected to the first end of the feedback module, and the sixteenth pin of the driving chip is connected to the second end of the feedback module.
3. The adjusting circuit according to claim 2, further comprising a third capacitor, a fifteenth capacitor and a first resistor, wherein one end of the fifteenth capacitor is connected to a sixteenth pin of the driver chip, the other end of the fifteenth capacitor is connected to the first output terminal of the driver chip, a first end of the third capacitor is connected to the sixteenth pin of the driver chip, a second end of the first resistor is connected to the fifteenth pin of the driver chip, and a second end of the third capacitor is connected to the first end of the first resistor.
4. The regulating circuit according to claim 2, wherein the power regulating module further comprises a first regulating component, a first end of the first regulating component is connected to the first output end of the driving chip, a second end of the regulating component is connected to the laser diode, and the first regulating component is configured to change the first output end of the driving chip from a voltage output to a current output.
5. The adjusting circuit of claim 4, wherein the first adjusting component comprises a sixth resistor and a seventh resistor, a first end of the sixth resistor is connected to the first output end of the driving chip, a second end of the sixth resistor is connected to a first end of the seventh resistor, and a second end of the seventh resistor is connected to the laser diode.
6. The adjusting circuit of claim 4, wherein the power adjusting module further comprises a third adjusting component, the third adjusting component is connected to the first adjusting component, and the third adjusting component is used for adjusting the set optical power of the laser diode.
7. The regulating circuit according to claim 1, further comprising a temperature regulating module, wherein the temperature regulating module is respectively connected to the power regulating module and the power supply module, the power regulating module is configured to control the operation of the temperature regulating module, the power supply module is configured to supply power to the temperature regulating module, and the temperature regulating module is configured to maintain a set temperature for the laser diode.
8. The adjusting circuit of claim 7, further comprising a detection component connected to the temperature adjusting module, wherein the detection component is configured to detect an actual temperature of the laser diode, and the temperature adjusting module is configured to control the temperature adjusting module to heat or cool according to the actual temperature and the set temperature.
9. The adjusting circuit of claim 7, further comprising a second adjusting component, the second adjusting component being connected to the temperature adjusting module, the second adjusting component being configured to adjust a wavelength of the laser diode.
10. A laser machining apparatus comprising the conditioning circuit of any of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221325178.XU CN217115153U (en) | 2022-05-31 | 2022-05-31 | Adjusting circuit and laser processing equipment |
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| CN202221325178.XU CN217115153U (en) | 2022-05-31 | 2022-05-31 | Adjusting circuit and laser processing equipment |
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| CN217115153U true CN217115153U (en) | 2022-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117939749A (en) * | 2024-01-25 | 2024-04-26 | 深圳市九州智焊未来科技有限公司 | Light source driving circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117939749A (en) * | 2024-01-25 | 2024-04-26 | 深圳市九州智焊未来科技有限公司 | Light source driving circuit |
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Effective date of registration: 20231108 Address after: Room 309, Building 3, Hanwei Internet of Things Technology Industrial Park, No. 32, wutong Street, Zhengzhou High tech Industrial Development Zone, Henan 450000 Patentee after: Zhengzhou Weijing Optoelectronic Technology Co.,Ltd. Address before: 518057 floor 23, No. 9988, Shennan Avenue, Nanshan District, Shenzhen, Guangdong Province Patentee before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. Patentee before: SHENZHEN HAN'S RAYPRO SENSING TECHNOLOGY CO.,LTD. |