CN1321487C - High-power driving system - Google Patents
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- CN1321487C CN1321487C CNB2003101235932A CN200310123593A CN1321487C CN 1321487 C CN1321487 C CN 1321487C CN B2003101235932 A CNB2003101235932 A CN B2003101235932A CN 200310123593 A CN200310123593 A CN 200310123593A CN 1321487 C CN1321487 C CN 1321487C
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Abstract
The present invention provides a high power driving system which is provided with a preset number of driving modules for driving a laser transmitter and other high power devices. Each driving module is provided with a driving circuit and a corresponding feedback circuit. The driving circuits of the driving modules generate a driving current respectively, then the driving currents are collected to drive the laser transmitter and the other high power devices. In addition, the feedback circuits of the driving modules receive the same detection signal. The detection signals reflect the output power of the high power devices. According to the detection signal, each feedback circuit generates a feedback signal respectively to make the corresponding driving circuit carry out a feedback action in order to adjust the driving currents.
Description
Technical field
The present invention relates to a kind of high power drive system, particularly a kind of high power drive system with feedback function.
Background technology
Laser was born in generation just only 40 years so far, and laser industry has alarming development.With ruby laser (one nine six zero year) is beginning, and glass laser (in 196 1), He-Ne Lasers (in 196 2), semiconductor laser (in 196 2), carbon dioxide laser (in 196 4), X-ray laser (in 197 2), excimer laser (1 or nine the Seventh Five-Year Plan year), free-electron laser (in 197 7) develop successively.And its range of application relates generally to communication, measurement, processing, medical treatment or the like especially, it serves to show that laser is for the importance of living from now on.
Different structure has different application types with the laser of different capacity.For instance, the laser of the optical transmitting set of the optical-fibre communications that family uses and the laser that is used for carrying out the industry cutting promptly have tangible difference; In addition, according to the characteristic of using, also laser can be divided into pulse laser and shake laser etc. continuously.In these types, there is the generating laser of a big class need use high power to drive.
In order to drive this type of high power laser light, often need generating laser is provided the drive current of big unit, for example 10 amperes or bigger electric current to reach required application; Yet, specially at the drive circuit of big current design its construct not only complexity and also manufacturing cost high.Therefore, prior art has a kind of with a plurality of drive circuit parallel connections, by converging the electric current of putting in order a plurality of drive circuits, drives the high power laser light reflector to obtain enough big electric current.
The PM laser system that the above-mentioned method of a kind of foundation of Fig. 1 illustration is formed, this system has high power laser light reflector 10, feedback circuit 12, pulse-generating circuit 14, and N group drive circuit 161,162 ..., 16N.Wherein, pulse-generating circuit 14 is used for producing pulse control signal to drive circuit 161,162 ..., 16N.Drive circuit 161,162 ..., 16N produces drive current separately, and these drive currents are used for driving high power laser light reflector 10 through after compiling.For instance, use 100 drive circuits that produce 0.1 ampere separately, just can obtain 10 amperes drive current through compiling of overcurrent.In addition, for the transmitting power that makes high power laser light reflector 10 keeps stable, feedback circuit 12 is responsible for monitoring the power of high power laser light reflectors 10, and provides and feed back signal to drive circuit 161,162 ..., 16N.
Because existing way is only to use single feedback circuit 102, and all drive circuits 161,162 ..., 16N all is connected to this feedback circuit 102, when one of them drive circuit damages, then may cause other drive circuit to burn and forms chain reaction.In addition, this kind practice stability commonly used is not high, has the difficulty of certain degree in maintenance yet.
Therefore, how can prior art be proposed to improve, stablize, have elasticity to provide one, and the low high power laser light drive system of cost of manufacture just become a job that has very much value.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of high power drive system and circuit, for driving the high power laser light reflector, and this drive system also can be used to drive the electronic installation that other needs the stable high power electric current to supply with circuit.
In order to achieve the above object, the invention provides a kind of high power drive system, provide a drive current to make a generating laser produce a light beam, this system comprises: a laser power detection device, detect the intensity of this light beam, and produce a detection signal; A plurality of driver modules, in parallel each other and produce one separately and output current to this generating laser, wherein the output current that each driver module produced equates; One current source provides above-mentioned a plurality of driver module a certain amount of electric current; And one pulse wave produce circuit, produce a setting signal to above-mentioned driver module, wherein this driver module relatively behind this setting signal and this detection signal, is exported a control signal to regulate the size of above-mentioned this output current; Can make the output of above-mentioned outputting current steadily by this, and by a plurality of driver modules of above-mentioned parallel connection with this this drive current of output current stack becoming.
The present invention also provides a kind of high power drive system, the driver module, a current source and the pulse wave that comprise a plurality of parallel connections produce circuit, and provide a set driving current value to make a generating laser produce a light beam, wherein this pulse wave produces the setting signal that circuit produces the current value of representing that this driver module should be exported, and each driver module comprises: a regulating current device, couple with above-mentioned current source, and produce an output current according to a control signal, wherein the output current that each driver module produced equates; One feedback circuit measures above-mentioned output current value, and produces a detection signal of the above-mentioned output current value of expression; And a comparison means, behind more above-mentioned detection signal and the setting signal, export this control signal to regulate this output current value that this regulating current device produces; By this, after this driver module parallel connection, the summation of this output current value equals above-mentioned set driving current value.
According to one embodiment of the invention, this kind high power drive unit mainly is to be formed in parallel with corresponding feedback circuit by the drive circuit of predetermined number; Each drive circuit has the feedback circuit of a correspondence, and constitutes a driver module, and this driver module can independently be made into integrated circuit (IC) chip.These drive circuits are for the drive current that produces these predetermined numbers, and by the compiling of these drive currents, to drive a high power laser light reflector.In addition, these feedback circuits receive a detection signal simultaneously separately, the power of this detection signal reflection high power laser light reflector; The generation source of this detection signal can or can be learnt by detecting drive circuit internal electrical changes in flow rate situation from a laser power detector, then, feedback circuit produces the corresponding drive circuit of feeding back signal to of a correspondence separately according to this detection signal, and drive circuit is adjusted the size of drive current again according to this feedback signal.
In the example of this embodiment, this kind laser driving apparatus is used for a PM laser system; Therefore, a pulse generating circuit is connected to the set point of each drive circuit, so that a setting signal to be provided.Drive circuit determines the numerical value of the drive current that it is exported at specific time point according to setting signal, for example exports 10 Ampere currents or output current not.
Therefore, high power drive system of the present invention has following advantage at least.At first, this kind high power drive system tool high stability, fail safe, and maintenance easily, this is because adopted independent feedback formula driver module conceptual design in parallel, can not damage because of one of them drive circuit, causes chain reaction, causes systemic breakdown.In addition, the autgmentability height of this kind laser system can directly increase the number of driver module in theory, just can reach the driving current value of any size; And the circuit exquisiteness of this kind drive system is easy to production and with low cost.
Description of drawings
The existing system architecture diagram that is used for driving high power laser light of Fig. 1 illustration;
The embodiment of Fig. 2 illustration foundation Laser Driven of the present invention system;
The real example schematic of making a plurality of driver modules of Fig. 3 illustration;
Real another example schematic of making a plurality of driver modules of Fig. 4 illustration:
The present invention of Fig. 5 illustration makes the practical circuit diagram of single driver module example in fact; And
Another real practical circuit diagram of making single driver module example of Fig. 6 illustration the present invention.
Wherein, description of reference numerals is as follows:
10 high power laser light reflectors, 12 feedback circuits
14 pulse waves produce circuit 161 drive circuits
162 drive circuit 16N move circuit
20 high power laser light reflectors, 221 feedback circuits
222 feedback circuit 22N feedback circuits
261 drive circuits, 262 drive circuits
The 26N drive circuit
314 pulse waves produce circuit 25 common end points
28 laser power detectors, 303 comparison means
307 current sources, 305 regulating current devices
306 current-limiting protection devices, 308 high power laser light reflectors
34 ' feedback circuit, 316 laser power detectors
32 ' drive circuit
Embodiment
The illustrative high power laser system of Fig. 2 is according to one embodiment of the invention.This laser system is with PM laser as an illustration, and it has high power laser light reflector 20, pulse-generating circuit 24, a N feedback circuit 221,222, ..., 22N, corresponding this N feedback circuit 221,222, ..., the N of a 22N drive circuit 261,262 ..., 26N, and laser power detector 28.N herein is the integer greater than two.
Pulse-generating circuit 24 herein is used for producing pulse control signal, also is called setting signal, and this signal is passed to drive circuit 261,262 ..., the set point of 26N.For instance, the output frequency of this pulse control signal is that 100KHz, pulsewidth are 1MHz, and just duty ratio is 1: 10, and high potential is that 1 volt, electronegative potential are 0 volt.Drive circuit 261,262 ..., 26N then produces drive current separately according to pulse control signal, and these drive currents are used for driving high power laser light reflector 20 through after compiling.For instance,, just use 100 drive circuits that produce 0.1 ampere separately, just can obtain 10 amperes drive current through compiling of overcurrent when N equals 100.
In addition, key character of the present invention comprises, for each drive circuit 261,262 ..., 26N provides the feedback circuit 221,222 of a correspondence ..., 22N.These feedback circuits 221,222, ..., 22N is via the mode of parallel connection, receive simultaneously from laser power detector 28 or by the detection signal that drive circuit 32 ' produced of inside, this detection signal mainly reflects the variation of drive current in the power output of this high power laser light reflector 20 or the system.Can use monitoring diode (monitor diode) during these laser power detector 28 real works.In addition, these feedback circuits 221,222 ..., 22N provides separately and independently feeds back signal to drive circuit 261,262 ..., 26N.Therefore, though all feedback circuits 221,222 ..., 22N all receives the same signal from common end points 25; But but can be at pairing drive circuit 261,262 ..., 26N designs especially, for example sets different threshold values or limits the scope that produces drive current; And by each feedback circuit 221,222,22N and corresponding drive circuit 261,262 ..., the driver module that 26N forms more can be made integrated circuit (IC) chip in pairs, to reduce whole cost.
From the above, drive circuit and feedback circuit are parallel with one another to become a driver module, can form a high power drive system and a plurality of driver module is parallel with one another and cooperate a current source, a pulse wave to produce circuit, a detection signal and a laser beam emitting device; In addition, the present invention not only can be applicable to the driving of high power laser light, also applicable for device that generally need the stable high power current drives, for example be used for driving, high power infrared transmitter and the high accuracy heating system of a High-Power Microwave device for signalling ... wait application.
For this notion can be more clearly understood, below enumerate two examples and illustrate:
Example one:
This example is applicable to the application of the laser beam emitting device that drives non-laser beam emitting device or do not have the laser power detector; The self-driven circuit 32 ' of feedback circuit tap of this example is by the variation that detects drive circuit 32 ' internal electrical flow, to produce a detection signal and then to make drive circuit 32 ' produce a stable output current; And converge this output current and be a drive current; Mode is to replace the effect of laser power detector by this; Its detailed execution mode please refer to Fig. 3 and cooperates with reference to Fig. 5; The single feedback circuit 34 ' of Fig. 3 illustration is made calcspar with the reality of pairing single drive circuit 32 ', and Fig. 5 then is the practical circuit diagram of single feedback circuit 34 ' and pairing single drive circuit 32 '.
Drive circuit 32 ' as shown in Figure 3 comprises a comparison means 303, a regulating current device 304 and a current-limiting protection device 306, and wherein this comparison means 303 of this drive circuit 32 ', this regulating current device 304 form a feedback loop with this feedback circuit 34 '; And this drive circuit 32 ' is formed a driver module with this feedback circuit 34 '; In addition, pulse wave produces circuit 314 generations one setting signal V1 and supplies this comparison means 303 and come the detection signal of self-feedback ciucuit 34 ' to compare and export a control signal, produces a stable output current corresponding to this setting signal to control this regulating current device 304.
At first, as shown in Figure 5, this regulating current device 304 of forming by transistor Q1, its external current source 307, and receive from the control signal of forming comparison means 303 with OPA amplifier AR3 by base (B) utmost point, magnitude of current height by this control signal, low and the magnitude of current of regulating this current source is to produce an output current I1, this output current I1 flows through this by R16, the current-limiting protection device 306 that R17 forms and converge after become a drive current, to drive this high power laser light reflector 308, the current-limiting protection device 306 of this moment limits this drive current, avoids excessive immediate current to cause the damage of generating laser 308; Output current I1 branches in the feedback circuit of being formed with R12, R13 and OPA amplifier AR2 34 ' simultaneously in addition, R12, R13 as Fig. 5 distinguish cross-over connection in parallel in positive and negative two ends of AR2, to produce its value of feedback signal V3 thereon and be I1* (R12//R13) when output current I1 flows through R12, R13, the current potential of this signal is (V+) and difference (V-); And with V+, V-imports the two ends of AR2 respectively, in addition, because of AR2 Design of Amplifier in this feedback circuit 34 ' is the differential amplifier of two times of amplifications, the multiplication factor of this feedback circuit 34 ' of indication need be looked this resistance R 12 herein, the resistance of R13 and deciding, its exportable detection signal V2, its value is 2 (V+-V-)=2V3=2I1* (R12//R13), hence one can see that, this detection signal can reflect the variation of output current I1, and this detection signal V2 is delivered to this V-with the comparison means 303 of OPA amplifier AR3 composition hold, produce the setting signal V1 that circuit 314 produces with this pulse wave of the V+ end that is input into AR3 and compare, and produce a control signal to regulate above-mentioned output current I1; When the detection signal of V-＞V+ representative feedback is higher than setting signal, the control signal of comparison means 303 outputs this moment one electronegative potential makes these regulating current device 304 output one lower output currents and the detection signal current potential of feedback is reduced; Otherwise, then export the base stage that controls signal to the regulating current device of forming with transistor Q1 304 of a high potential, mat characteristics of transistor Ic (collected current)=β Ib (base current), by Ic=I1 (output current) and Ib is a control signal as can be known among the figure, so can be by this control signal to increase this output current, till this detection signal is equal to setting signal; So carry out the correction of several recurrence, i.e. may command output one output current corresponding to setting signal V1, and converge a plurality of output currents that a plurality of driver modules produce to form a drive current.
By this, the output current I1 that regulating current device 304 is produced will with the linear variation of setting signal V1, and according to this feedback loop, after revising stack repeatedly for several times, can make the stable output of drive current.
As shown in the above, its current-limiting protection device 306 only is to have current limit function to play the effect of protection laser beam emitting device; Therefore if there is not this device, but the present invention still normal operation do not have anxiety.
Example two:
This example is applicable to that driving one has the application of the laser beam emitting device of laser power detector 316, utilizes the power of a laser power detector 316 according to the high power laser light emitter, produces a detection signal to feedback circuit, adjusts reference for drive current; Its detailed execution mode please refer to Fig. 4 and cooperates with reference to Fig. 6; The single feedback circuit 36 ' of Fig. 4 illustration is made calcspar with the reality of pairing single drive circuit 32 ', and Fig. 6 then is the practical circuit diagram of single feedback circuit 36 ' and pairing single drive circuit 32 '.
Drive circuit 32 ' as shown in Figure 4 comprises a comparison means 303, a regulating current device 304 and a current-limiting protection device 306; Wherein this comparison means 303 of this drive circuit 32 ', this regulating current device 304, this current-limiting protection device 306 form a feedback loop with this laser power detector 316 and feedback circuit 36 '; And this drive circuit 32 ' is formed a driver module with this feedback circuit 36 '; In addition, pulse wave produces circuit 314 for producing a setting signal V1, produces an output current corresponding to this setting signal V1 to control this regulating current device 304.
At first, as shown in Figure 6, this regulating current device 304 of forming by transistor Q1, its external current source 307, and receive from the control signal of forming comparison means 303 with OPA amplifier AR3 by base (B) utmost point, by the high and low of the magnitude of current of this control signal and the magnitude of current of regulating this current source producing an output current I1, this output current I1 flow through this current-limiting protection device 306 of forming by R16, R17 and converge after become a drive current, to drive this high power laser light reflector 308; The current-limiting protection device of this moment limits this output current, avoids excessive immediate current to cause the damage of generating laser; Simultaneously, laser power detector 316 is according to the transmitting power of this reflector 308, produce a feedback signal V3 and return in the feedback circuit of forming with OPA amplifier AR1 36 ', the feedback circuit 36 ' of this moment is a simple voltage follower, does not decay because of impedance matching for guaranteeing feedback signal V3; Therefore this feedback signal V3 is equal to this detection signal V2, again this detection signal V2 is transferred to fully the V-end of the comparison means of forming with OPA amplifier AR3 303, produce the setting signal V1 that circuit 314 produces with this pulse wave of the V+ end that is input into AR3 and compare, to produce a control signal to regulate above-mentioned output current I1; When V-＞V+ comparison means 303 output electronegative potential control signals then, to control the lower output current of this regulating current device 304 outputs one; Otherwise, then export the base stage that high potential controls signal to the regulating current device of forming with transistor Q1 304, the mat transistor characteristic is regulated this output current, so carry out the correction of several recurrence, be may command output one output current, and converge a plurality of output currents that a plurality of driver modules produce to form a drive current corresponding to setting signal V1; By this, the electric current that regulating current device 304 is produced will with the linear variation of setting signal, and according to this feedback loop, after revising repeatedly for several times, can make the stable output of drive current.
From the above, its feedback circuit 36 ' is a buffer unit, only shifts detection signal that laser power detector 316 produced merely to comparison means 303; And the only effect of tool protection laser beam emitting device of current-limiting protection device 306; Therefore if no above-mentioned this feedback circuit 36 ' and this current-limiting protection device 306, but the present invention still normal operation do not have anxiety.
Under this sets, if the power of high power laser light reflector 308 along with temperature or other factors change, then can be compensated by this feedback system, and make power output remain on certain stable state.The rest may be inferred, and the drive circuit that whole system can be in parallel how identical or inequality again and the combination of feedback circuit are with the demand of compliance with system design.
Compared to design methods existing, as shown in Figure 1, it only uses single feedback circuit 102, therefore is not suitable for expanding arbitrarily drive circuit 261,262 ..., 26N, and these drive circuits 261,262,26N also has certain restriction in design.In comparison, use above-mentioned laser system design, because feedback circuit 221,222, ..., 22N and drive circuit 261,262 ..., 26N constitutes driver module in pairs, therefore can increase the number of modules of this kind driver module in design arbitrarily, drive current can be big arbitrarily in theory, to meet the specification of various high power laser light reflectors.
And, owing to adopted the feedback-type laser drive circuit, the pulse signal unanimity that the pulse signal that feedback point is received is imported with set point, thereby signal is not subjected to what influence of parallel circuits.Simultaneously,, can not influence whole system because of the damage of some drive circuits owing to be that independently feedback-type pulse laser drive circuit is formed in parallel, thus the stability of the system of assurance.In addition, the present invention has adopted the mode of a plurality of independently feedback-type PM laser drive circuit parallel connection, can not damage because of one of them drive circuit, and electric current is shared other drive circuit, burn other drive circuit, form chain reaction, therefore can not make systemic breakdown because of local circuit damages, make security of system height of the present invention, and system keeps in repair easily.In addition, foundation Laser Driven of the present invention system also can directly control output current by the control set-point voltage, and this kind system produces easily, and is with low cost.
Certainly, it must be noted that, though this driving of sentencing PM laser illustrate as embodiment, yet the present invention is not limited to be used in PM laser certainly.The combination of drive circuit and feedback circuit by a plurality of parallel connections, each drive circuit can be considered a driver module with corresponding feedback circuit, and this kind driver module can be used for driving various high power transmission devices.
Though the present invention with a preferred embodiment openly as above; right its is not in order to limit the present invention; those skilled in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is when being as the criterion with the protection range that claims were defined.
Claims (9)
1. a high power drive system provides a drive current to make a generating laser produce a light beam, and this system comprises:
One laser power detection device detects the intensity of this light beam, and produces a detection signal;
A plurality of driver modules, in parallel each other and produce one separately and output current to this generating laser, wherein the output current that each driver module produced equates;
One current source provides above-mentioned a plurality of driver module a certain amount of electric current; And
One pulse wave produces circuit, produces a setting signal to above-mentioned driver module, and wherein this driver module relatively behind this setting signal and this detection signal, is exported a control signal to regulate the size of above-mentioned this output current;
Can make the output of above-mentioned outputting current steadily by this, and by a plurality of driver modules of above-mentioned parallel connection with this this drive current of output current stack becoming.
2. high power drive system as claimed in claim 1, wherein each driver module also comprises:
One comparison means, more above-mentioned detection signal and above-mentioned setting signal, and export a control signal; And
One regulating current device according to above-mentioned control signal, and is regulated above-mentioned output current.
3. high power drive system as claimed in claim 1, wherein each driver module also comprises:
One feedback circuit is kept the current potential of this detection signal;
One comparison means, more above-mentioned detection signal and above-mentioned setting signal, and export a control signal; And
One regulating current device according to above-mentioned control signal, and is regulated above-mentioned output current.
4. high power drive system as claimed in claim 1, wherein each driver module also comprises:
One comparison means, more above-mentioned detection signal and above-mentioned setting signal, and export a control signal;
One regulating current device according to above-mentioned control signal, and is regulated above-mentioned output current; And
One current-limiting protection device limits above-mentioned output current, with the protection generating laser.
5. high power drive system as claimed in claim 1, wherein each driver module also comprises:
One feedback circuit is kept the current potential of this detection signal;
One comparison means, more above-mentioned detection signal and above-mentioned setting signal, and export a control signal;
One regulating current device according to above-mentioned control signal, and is regulated above-mentioned output current; And
One current-limiting protection device limits above-mentioned output current, to protect this generating laser.
6. high power drive system, the driver module, a current source and the pulse wave that comprise a plurality of parallel connections produce circuit, and provide a set driving current value to make a generating laser produce a light beam, wherein this pulse wave produces the setting signal that circuit produces the current value of representing that this driver module should be exported, and each driver module comprises:
One regulating current device couples with above-mentioned current source, and produces an output current according to a control signal, and wherein the output current that each driver module produced equates;
One feedback circuit measures above-mentioned output current value, and produces a detection signal of the above-mentioned output current value of expression; And
One comparison means behind more above-mentioned detection signal and the setting signal, is exported this control signal to regulate this output current value that this regulating current device produces;
By this, after this driver module parallel connection, the summation of this output current value equals above-mentioned set driving current value.
7. high power drive system as claimed in claim 6, wherein each driver module also comprises:
One current-limiting protection device, the size of above-mentioned this output current of restriction is to protect this generating laser.
8. high power drive system as claimed in claim 6, wherein this regulating current device comprises a transistor, and this transistor is according to the control signal that this comparison means produced, to determine the size of this output current.
9. high power drive system as claimed in claim 6, wherein this comparison means comprises an OPA operational amplifier, this OPA operational amplifier relatively pulse wave produces a setting signal of circuit output and a detection signal of feedback circuit feedback generation, and produces one and control signal to this regulating current device.
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| CNB2003101235932A CN1321487C (en) | 2003-12-26 | 2003-12-26 | High-power driving system |
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| CNB2003101235932A CN1321487C (en) | 2003-12-26 | 2003-12-26 | High-power driving system |
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| CN102646917A (en) * | 2012-05-11 | 2012-08-22 | 中国科学院半导体研究所 | Drive circuit of laser source of laser projector |
| CN103414103A (en) * | 2013-08-16 | 2013-11-27 | 中国科学院半导体研究所 | Driving power supply device of parallel connection expansion high-power all-solid-state laser |
| CN104332814A (en) * | 2014-10-22 | 2015-02-04 | 苏州佑瑞检测技术有限公司 | Automatically-regulated digital high power driving power supply adopting positive and negative feedback |
| CN108414618A (en) * | 2018-02-28 | 2018-08-17 | 中国人民武装警察部队工程大学 | Laser ultrasonic detection device and detection method suitable for large-scale component non-destructive testing |
| CN108631151A (en) * | 2018-06-05 | 2018-10-09 | 成都楼兰科技有限公司 | Laser drive circuit |
| CN111948625A (en) * | 2019-05-14 | 2020-11-17 | 复旦大学 | Vertical cavity surface laser-emitting integrated chip and laser emitter |
| CN112312103A (en) * | 2020-10-21 | 2021-02-02 | 华域视觉科技(上海)有限公司 | Laser projection feedback adjustment system and method and vehicle |
| CN113966038A (en) * | 2021-11-01 | 2022-01-21 | 深圳市先地图像科技有限公司 | Laser power control circuit and method and laser imaging equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4912714A (en) * | 1987-04-13 | 1990-03-27 | Sharp Kabushiki Kaisha | Apparatus for driving a semiconductor laser device |
| JPH10125985A (en) * | 1996-10-16 | 1998-05-15 | Oki Electric Ind Co Ltd | Laser diode drive device |
| JPH10135541A (en) * | 1996-10-31 | 1998-05-22 | Dainippon Screen Mfg Co Ltd | Semiconductor laser driving device |
| JP2001230485A (en) * | 2000-02-16 | 2001-08-24 | Ricoh Co Ltd | Automatic luminous quantity controller and automatic luminous quantity control method |
| CN1404193A (en) * | 2002-09-18 | 2003-03-19 | 威盛电子股份有限公司 | Automatic laser power control circuit and its switch control circuit |
| JP2003124564A (en) * | 2001-10-18 | 2003-04-25 | Smk Corp | Drive controller of semiconductor laser |
| JP2003163547A (en) * | 2001-11-28 | 2003-06-06 | Kyocera Corp | Drive circuit for laser diode |
| JP2003317297A (en) * | 2002-02-21 | 2003-11-07 | Mitsumi Electric Co Ltd | Optical power level-controlling device |
-
2003
- 2003-12-26 CN CNB2003101235932A patent/CN1321487C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4912714A (en) * | 1987-04-13 | 1990-03-27 | Sharp Kabushiki Kaisha | Apparatus for driving a semiconductor laser device |
| JPH10125985A (en) * | 1996-10-16 | 1998-05-15 | Oki Electric Ind Co Ltd | Laser diode drive device |
| JPH10135541A (en) * | 1996-10-31 | 1998-05-22 | Dainippon Screen Mfg Co Ltd | Semiconductor laser driving device |
| JP2001230485A (en) * | 2000-02-16 | 2001-08-24 | Ricoh Co Ltd | Automatic luminous quantity controller and automatic luminous quantity control method |
| JP2003124564A (en) * | 2001-10-18 | 2003-04-25 | Smk Corp | Drive controller of semiconductor laser |
| JP2003163547A (en) * | 2001-11-28 | 2003-06-06 | Kyocera Corp | Drive circuit for laser diode |
| JP2003317297A (en) * | 2002-02-21 | 2003-11-07 | Mitsumi Electric Co Ltd | Optical power level-controlling device |
| CN1404193A (en) * | 2002-09-18 | 2003-03-19 | 威盛电子股份有限公司 | Automatic laser power control circuit and its switch control circuit |
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| CN1635669A (en) | 2005-07-06 |
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