CN109301685A - The Poewr control method and laser of laser - Google Patents
The Poewr control method and laser of laser Download PDFInfo
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- CN109301685A CN109301685A CN201810943290.1A CN201810943290A CN109301685A CN 109301685 A CN109301685 A CN 109301685A CN 201810943290 A CN201810943290 A CN 201810943290A CN 109301685 A CN109301685 A CN 109301685A
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- photocell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
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- Condensed Matter Physics & Semiconductors (AREA)
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Abstract
The disclosure is directed to a kind of Poewr control method of laser and laser, laser includes: photocell, light receiving element, grating eyeglass and processor；Photocell is for emitting light；Grating eyeglass is for breaing up the transmitting light；The reflected light is converted to current signal for receiving the grating eyeglass generated reflected light during breaing up the transmitting light by light receiving element；Processor is used to control the light emitting power of the photocell according to the current signal.To improve the reliability of infrared laser.
Description
Technical field
This disclosure relates to the Poewr control method and laser of field of laser device technology more particularly to a kind of laser.
Background technique
Extensive use has been obtained in fields such as medical domain, recognitions of face in laser, and the principle of laser is: light hair
Element transmitting light is penetrated, grating eyeglass breaks up transmitting light, and the light emitting after breaing up is gone out.
Such as: infrared laser is currently used in recognition of face and 3D application, and infrared laser passes through diffraction optics member
The laser beam of concentration is broken up and is launched by part (Diffractive Optical Elements, DOE) eyeglass, normal condition
The laser that lower DOE breaks up can reduce beam energy, protect a user from laser hazard to a certain extent, but work as DOE eyeglass
Be displaced will be unable to break up when perhaps damage laser or break up laser degree it is very weak.
Summary of the invention
The embodiment of the present disclosure provides the Poewr control method and laser of a kind of laser.The technical solution is as follows:
According to the first aspect of the embodiments of the present disclosure, a kind of laser is provided, comprising: photocell, light receiving element,
Grating eyeglass and processor.
Photocell is for emitting light.
Grating eyeglass is for breaing up transmitting light.
Light receiving element will be reflected for receiving grating eyeglass generated reflected light during breaing up transmitting light
Light is converted to current signal.
Processor is used to control the light emitting power of photocell according to current signal.
The technical solution that the embodiment of the present disclosure provides can include the following benefits: can be effectively by the laser
Light emitting power is controlled, and then improves the reliability of laser
Optionally, processor is specifically used for: when current signal is greater than the first current threshold, controlling the light of photocell
Transmission power becomes smaller.When current signal is less than the second current threshold, the light emitting power for controlling photocell becomes larger.
Due to handling implement body function as above, so that laser can efficiently control light emitting power, Jin Erti
The reliability of high laser.
Optionally, further includes: the detection circuit that both ends are connect with light receiving element, processor respectively.Detection circuit is used for
Current signal is converted into voltage signal.Correspondingly, processor is specifically used for: when voltage signal is greater than first voltage threshold value,
The light emitting power of control photocell becomes smaller.When voltage signal is less than second voltage threshold value, photocell is controlled
Light emitting power becomes larger.
Due to handling implement body function as above, so that laser can efficiently control light emitting power, Jin Erti
The reliability of high laser.
Optionally, further includes: the amplifier that both ends are connect with detection circuit, processor respectively.Amplifier is for amplifying electricity
Press signal.
The laser that the disclosure provides can also include amplifier, and amplifier is for amplifying voltage signal, so as to processor
More accurate control light emitting power.
Optionally, further includes: the driving circuit that both ends are connect with processor, photocell respectively.Correspondingly, processor
Be specifically used for: processor controls driving circuit according to current signal and generates driving signal.Wherein, driving signal is for controlling light
The light emitting power of radiated element.
The laser that the disclosure provides can also include driving circuit, so that driving of the laser by control driving circuit
Signal controls light emitting power, and then improves the reliability of laser.
Optionally, photocell and light receiving element are located at same level.
Optionally, light receiving element is embedded in photocell.
Optionally, the distance of photocell and light receiving element is less than pre-determined distance.
Optionally, grating eyeglass is located at the top of photocell and light receiving element.
Be provided below the Poewr control method, storage medium and computer program product of a kind of laser, content and
Effect can refer to above-mentioned apparatus part, repeat no more below to this.
According to the second aspect of an embodiment of the present disclosure, a kind of Poewr control method of laser is provided, method is applied to swash
Light device, laser include: photocell, light receiving element, grating eyeglass and processor.Correspondingly, method includes: light
Radiated element emits light.Grating eyeglass breaks up transmitting light.Light receiving element receives grating eyeglass during breaing up transmitting light
Generated reflected light.Convert the reflected light into current signal.Processor is sent out according to the light that current signal controls photocell
Penetrate power.
Optionally, processor controls the light emitting power of photocell according to current signal, comprising: when current signal is big
When the first current threshold, the light emitting power of processor control photocell becomes smaller.When current signal is less than the second electric current
When threshold value, the light emitting power of processor control photocell becomes larger.
Optionally, laser further include: the detection circuit that both ends are connect with light receiving element, processor respectively.Correspondingly,
Processor is controlled according to current signal before the light emitting power of photocell further include: detection circuit turns current signal
It is changed to voltage signal.Then processor controls the light emitting power of photocell according to current signal, comprising: works as voltage signal
When greater than first voltage threshold value, the light emitting power for controlling photocell becomes smaller.When voltage signal is less than second voltage threshold value
When, the light emitting power for controlling photocell becomes larger.
Optionally, laser further include: the amplifier that both ends are connect with detection circuit, processor respectively.Correspondingly, method
Further include: amplifier amplifies voltage signal.
Optionally, laser further include: the driving circuit that both ends are connect with processor, photocell respectively.Correspondingly,
Processor controls the light emitting power of photocell according to current signal, comprising: processor is controlled according to current signal and driven
Circuit evolving driving signal.Wherein, driving signal is used to control the light emitting power of photocell.
Optionally, photocell and light receiving element are located at same level.
Optionally, light receiving element is embedded in photocell.
Optionally, the distance of photocell and light receiving element is less than pre-determined distance.
Optionally, grating eyeglass is located at the top of photocell and light receiving element.
According to the third aspect of an embodiment of the present disclosure, a kind of storage medium is provided characterized by comprising executable to refer to
It enables, instructs the Poewr control method of the laser of the optional way for realizing such as second aspect or second aspect.
According to a fourth aspect of embodiments of the present disclosure, a kind of computer program product is provided characterized by comprising can
It executes instruction, instructs the Poewr control method of the laser of the optional way for realizing such as second aspect or second aspect.
The technical solution that the embodiment of the present disclosure provides can include the following benefits:
The disclosure provides the Poewr control method and laser of a kind of laser, and laser includes: that photocell, light connect
Receive element, grating eyeglass and processor.Photocell is for emitting light.Grating eyeglass is for breaing up transmitting light.Light-receiving
Element converts the reflected light into electric current for receiving grating eyeglass generated reflected light during breaing up transmitting light
Signal.Processor is used to control the light emitting power of photocell according to current signal.Such as: when the light of photocell
When transmission power is excessive, the light emitting power that processor can control photocell becomes smaller, when the light emitting of photocell
When power is too small, the light emitting power that processor can control photocell becomes larger.To efficiently control light emitting function
Rate, and then improve the reliability of laser.By taking infrared laser as an example, when DOE eyeglass is displaced or damages, by nothing
Method break up laser or break up laser degree it is very weak, so that too strong laser beam can hurt user.And at this
In open, processor can reduce the light emitting power of photocell, so that user be avoided to be hurt, that is, improve red
The reliability of outer laser.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.
Fig. 1 is a kind of schematic diagram of laser 10 shown according to an exemplary embodiment；
Fig. 2 is a kind of schematic diagram of the laser 20 shown according to another exemplary embodiment；
Fig. 3 is a kind of schematic diagram of laser 30 shown according to another exemplary embodiment；
Fig. 4 is a kind of schematic diagram of the laser 40 shown according to a further exemplary embodiment；
Fig. 5 is a kind of flow chart of the Poewr control method of laser shown according to an exemplary embodiment；
Fig. 6 is a kind of flow chart of the Poewr control method of the laser shown according to another exemplary embodiment；
Fig. 7 is a kind of flow chart of the Poewr control method of laser shown according to another exemplary embodiment.
Through the above attached drawings, it has been shown that the specific embodiment of the disclosure will be hereinafter described in more detail.These attached drawings
It is not intended to limit the scope of this disclosure concept by any means with verbal description, but by referring to specific embodiments
The concept of the present disclosure is explained for those skilled in the art.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary is implemented
Embodiment described in example does not represent all implementations consistent with this disclosure.On the contrary, they are only and such as institute
The example of the consistent device and method of some aspects be described in detail in attached claims, the disclosure.
As described above, extensive use, the original of laser has been obtained in fields such as medical domain, recognitions of face in laser
Reason is: photocell emits light, and grating eyeglass breaks up transmitting light, and the light emitting after breaing up is gone out.Such as: it is infrared to swash
Light device is currently used in recognition of face and 3D application, and the laser beam of concentration is broken up transmitting by DOE eyeglass by infrared laser
It goes out, the laser that DOE breaks up under normal circumstances can reduce beam energy, protect a user from laser wound to a certain extent
Evil, but when DOE eyeglass be displaced will be unable to break up when perhaps damage laser or break up laser degree it is very weak, in this way
So that too strong laser beam can hurt user.Therefore the luminous power for how controlling laser is known as skill urgently to be resolved
Art problem.
In order to solve the above-mentioned technical problem, the disclosure provides the Poewr control method and laser of a kind of laser.Wherein
The application scenarios of the disclosure are: due to the damage or offset of grating eyeglass, leading to the light emitting power mistake that laser is current
Greatly, alternatively, the light emitting power for causing laser current due to other reasons is too small.Based on the application scenarios, below to this public affairs
Technical solution is opened to describe in detail:
Fig. 1 is a kind of schematic diagram of laser 10 shown according to an exemplary embodiment, such as the laser can be
Infrared laser.Wherein the laser 10 includes photocell 11, light receiving element 12, grating eyeglass 13 and processor.
Wherein, light receiving element 12, grating eyeglass 13 and processor are sequentially connected, and processor is also first with light emitting
Part 11 connects.
Photocell 11 is for emitting light.Grating eyeglass 13 passes through grating for breaing up transmitting light, a portion light
Eyeglass 13, another part light reflex to light receiving element 12.Light receiving element 12 is being broken up for receiving the grating eyeglass 13
Generated reflected light during the transmitting light, and the reflected light is converted into current signal；Processor is used for basis
The current signal controls the light emitting power of the photocell.
Optionally, which is vertical cavity surface emitting laser (Vertical Cavity Surface
Emitting Laser, VCSEL) photocell.Alternatively, the photocell is by one or more light emitting diodes
(light-emitting diode, LED) is constituted.In short, the disclosure to photocell with no restrictions.
Optionally, grating eyeglass 13 can be DOE eyeglass, be also possible to other grating eyeglasses, and the disclosure does not limit this
System.
Optionally, light receiving element 12 can be photodiode (Photosensitive Diode, PD), be also possible to
Other light receiving elements, as long as the light receiving element 12 can receive the reflected light of photocell, the disclosure is to light
Receiving element is also with no restrictions.
Optionally, processor can be application specific integrated circuit (Application Specific Integrated
Circuit, ASIC), digital signal processor (Digital Signal Processor, DSP), digital signal processing appts
(Digital Signal Processor Device, DSPD), programmable logic device (Programable Logic
Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), controller, micro-control
Device, microprocessor or other electronic components processed etc..The disclosure is without limitation.
Optionally, the photocell 11 and the light receiving element 12 are located at same level.Such as: such as Fig. 1 institute
Show, light receiving element 12 is embedded in the photocell 11.
Alternatively,
The distance of photocell 11 and the light receiving element 12 is less than pre-determined distance, which can be 3 lis
Rice or 5 centimetres etc., the disclosure is without limitation.
It should be noted that the disclosure does not limit the positional relationship of photocell 11 and the light receiving element 12
System, as long as light receiving element 12 can receive the reflected light of photocell 11.
Optionally, grating eyeglass 13 is located at the top of the photocell 11 and the light receiving element 12.Wherein, light
Grid eyeglass 13 can be 10 centimetres or 15 centimetres etc. at a distance from the photocell 11 and the light receiving element 12,
The disclosure is without limitation.
To sum up, the disclosure provides a kind of laser, comprising: photocell, light receiving element, grating eyeglass and processing
Device；Photocell is for emitting light；Grating eyeglass is for breaing up the transmitting light；Light receiving element is for receiving the light
Grid eyeglass generated reflected light during breaing up the transmitting light, and the reflected light is converted into current signal；Place
Reason device is used to control the light emitting power of the photocell according to the current signal.Such as: when the light of photocell
When transmission power is excessive, the light emitting power that processor can control photocell becomes smaller, when the light emitting of photocell
When power is too small, the light emitting power that processor can control photocell becomes larger.To efficiently control light emitting function
Rate, and then improve the reliability of laser.By taking infrared laser as an example, when DOE eyeglass is displaced or damages, by nothing
Method break up laser or break up laser degree it is very weak, so that too strong laser beam can hurt user.And at this
In open, processor can reduce the light emitting power of photocell, so that user be avoided to be hurt, that is, improve red
The reliability of outer laser.
The function of processor will be described in detail below.
In a kind of achievable mode, processor is specifically used for: when the current signal is greater than the first current threshold, control
The light emitting power for making the photocell 11 becomes smaller；When the current signal is less than the second current threshold, described in control
The light emitting power of photocell 11 becomes larger.
Optionally, the first current threshold is greater than the second current threshold.
Optionally, the light emitting power that so-called processor controls the photocell 11, which becomes smaller, to be referred to: processor control
The light emitting power of photocell 11 reaches the first default light emitting power.So-called processor controls the photocell
11 light emitting power, which becomes larger, to be referred to: the light emitting power of processor control photocell 11 reaches the second default light emitting
Power.
Wherein, the disclosure to the size of the first default light emitting power and the second default light emitting power with no restrictions, example
Such as: the first default light emitting power and the second default light emitting power can be identical.
In the achievable mode of another kind, Fig. 2 is a kind of showing for the laser 20 shown according to another exemplary embodiment
It is intended to, laser can also include: the detection circuit that both ends are connect with the light receiving element 12, the processor 14 respectively
15。
Wherein, detection circuit 15 is used to the current signal being converted to voltage signal.Correspondingly, the processor 14 has
Body is used for: when the voltage signal is greater than first voltage threshold value, the light emitting power for controlling the photocell becomes smaller；
When the voltage signal is less than second voltage threshold value, the light emitting power for controlling the photocell becomes larger.
Optionally, first voltage threshold value is greater than second voltage threshold value.
Optionally, the light emitting power that so-called processor 14 controls the photocell 11, which becomes smaller, to be referred to: processor control
The light emitting power of photocell 11 processed reaches the first default light emitting power.So-called processor 14 controls the light emitting
The light emitting power of element 11, which becomes larger, to be referred to: the light emitting power of processor control photocell 11 reaches the second default light
Transmission power.
Wherein, the disclosure to the size of the first default light emitting power and the second default light emitting power with no restrictions, example
Such as: the first default light emitting power and the second default light emitting power can be identical.
To sum up, for example above two optional side of mode of the processor control light emitting power in the laser that the disclosure provides
Formula is based on this, and laser can effectively control light emitting power, such as: when the light emitting power of photocell is excessive
When, the light emitting power that processor can control photocell becomes smaller, when the light emitting power of photocell is too small,
The light emitting power that processor can control photocell becomes larger.To efficiently control light emitting power, and then improves and swash
The reliability of light device.By taking infrared laser as an example, will be unable to break up when DOE eyeglass is displaced perhaps damage laser or
The degree for breaing up laser is very weak, so that too strong laser beam can hurt user.And in the disclosure, processor
The light emitting power of photocell can be reduced, so that user be avoided to be hurt, that is, improves the reliable of infrared laser
Property.
Further, on the basis of above-described embodiment, laser provided by the disclosure further include both ends respectively with
The amplifier that the detection circuit, the processor connect.Such as: Fig. 3 is one kind shown according to another exemplary embodiment
The schematic diagram of laser 30, as shown in figure 3, laser can also include: both ends respectively with the detection circuit 15, the place
Manage the amplifier 16 that device 14 connects.
Wherein, amplifier 16 is for amplifying the voltage signal.
Further, on the basis of above-described embodiment, Fig. 4 is the one kind shown according to a further exemplary embodiment
The schematic diagram of laser 40, as shown in figure 4, laser provided by the disclosure further include: both ends respectively with the processor
14, the driving circuit 17 that the photocell 11 connects.
Correspondingly, the processor 14 is specifically used for: the processor 14 controls the driving according to the current signal
Circuit 17 generates driving signal；Wherein, the driving signal is used to control the light emitting power of the photocell.
Optionally, which can be VCSEL driving circuit.
To sum up, the laser that the disclosure provides can also include amplifier, and amplifier is used to amplify the voltage signal, with
Just the more accurate control light emitting power of processor.Also, the laser that the disclosure provides can also include driving circuit,
So that laser controls light emitting power by the driving signal of control driving circuit, and then improve the reliability of laser.
Fig. 5 is a kind of flow chart of the Poewr control method of laser shown according to an exemplary embodiment, this method
Applied to laser, which includes: photocell, light receiving element, grating eyeglass and processor.Correspondingly, institute
The method of stating includes the following steps:
In step S501: photocell emits light.
In step S502: grating eyeglass breaks up the transmitting light.
In step S503: produced by light receiving element receives the grating eyeglass during breaing up the transmitting light
Reflected light.
In step S504: the reflected light is converted to current signal by light receiving element.
In step S505: processor controls the light emitting power of the photocell according to current signal.
Optionally, which is VCSEL.Alternatively, the photocell is made of one or more LED.In short,
The disclosure to photocell with no restrictions.
Optionally, grating eyeglass can be DOE eyeglass, be also possible to other grating eyeglasses, and the disclosure is without limitation.
Optionally, light receiving element can be PD, be also possible to other light receiving elements, as long as the light receiving element can
To receive the reflected light of photocell, the disclosure to light receiving element also with no restrictions.
Optionally, processor can be ASIC, DSP, DSPD, PLD, FPGA, controller, microcontroller, microprocessor or
Other electronic components etc..The disclosure is without limitation.
Optionally, the photocell and the light receiving element are located at same level.Such as: light receiving element is embedding
Enter in the photocell.
Alternatively,
The distance of photocell and the light receiving element is less than pre-determined distance, which can be 3 centimetres or 5
Centimetre etc., the disclosure is without limitation.
It should be noted that the disclosure to the positional relationship of photocell and the light receiving element with no restrictions, only
Light receiving element is wanted to can receive the reflected light of photocell.
Optionally, grating eyeglass is located at the top of the photocell and the light receiving element.Wherein, grating eyeglass
Can be 10 centimetres or 15 centimetres etc. at a distance from the photocell and the light receiving element, the disclosure to this not
It is limited.
To sum up, the disclosure provides a kind of light power control method of laser, comprising: photocell emits light.Grating
Eyeglass breaks up the transmitting light.Produced by light receiving element receives the grating eyeglass during breaing up the transmitting light
Reflected light.The reflected light is converted to current signal by light receiving element.Processor controls the light according to current signal and sends out
Penetrate the light emitting power of element.Such as: when the light emitting power of photocell is excessive, processor can control light emitting
The light emitting power of element becomes smaller, and when the light emitting power of photocell is too small, processor can control photocell
Light emitting power become larger.To efficiently control light emitting power, and then improve the reliability of laser.With infrared laser
For device, when DOE eyeglass be displaced will be unable to break up when perhaps damage laser or break up laser degree it is very weak, this
Sample makes too strong laser beam that can hurt user.And in the disclosure, processor can reduce the light hair of photocell
Power is penetrated, so that user be avoided to be hurt, that is, improves the reliability of infrared laser.
It is carried out for step S505 as described below:
A kind of optional way: Fig. 6 is a kind of Poewr control method of the laser shown according to another exemplary embodiment
Flow chart, step S505 includes:
Step S505a: when the current signal is greater than the first current threshold, the processor controls the light emitting member
The light emitting power of part becomes smaller；When the current signal is less than the second current threshold, the processor controls the light emitting
The light emitting power of element becomes larger.
Optionally, the first current threshold is greater than the second current threshold.
Optionally, the light emitting power that so-called processor controls the photocell, which becomes smaller, to be referred to: processor controls light
The light emitting power of radiated element reaches the first default light emitting power.So-called processor controls the light of the photocell
Transmission power, which becomes larger, to be referred to: the light emitting power of processor control photocell reaches the second default light emitting power.
Wherein, the disclosure to the size of the first default light emitting power and the second default light emitting power with no restrictions, example
Such as: the first default light emitting power and the second default light emitting power can be identical.
Another optional way: Fig. 7 is a kind of power control side of laser shown according to another exemplary embodiment
The flow chart of method, the laser further include: the detection electricity that both ends are connect with the light receiving element, the processor respectively
Road；Correspondingly, before step S505 further include:
Step S506: the current signal is converted to voltage signal by detection circuit.
Then step S505 includes step S505b:
In step S505b: when the voltage signal is greater than first voltage threshold value, controlling the light of the photocell
Transmission power becomes smaller；When the voltage signal is less than second voltage threshold value, the light emitting power of the photocell is controlled
Become larger.
Optionally, first voltage threshold value is greater than second voltage threshold value.
Optionally, the light emitting power that so-called processor controls the photocell, which becomes smaller, to be referred to: processor controls light
The light emitting power of radiated element reaches the first default light emitting power.So-called processor controls the light of the photocell
Transmission power, which becomes larger, to be referred to: the light emitting power of processor control photocell reaches the second default light emitting power.
Wherein, the disclosure to the size of the first default light emitting power and the second default light emitting power with no restrictions, example
Such as: the first default light emitting power and the second default light emitting power can be identical.
To sum up, for example above two optional side of mode of the processor control light emitting power in the laser that the disclosure provides
Formula is based on this, and laser can effectively control light emitting power, such as: when the light emitting power of photocell is excessive
When, the light emitting power that processor can control photocell becomes smaller, when the light emitting power of photocell is too small,
The light emitting power that processor can control photocell becomes larger.To efficiently control light emitting power, and then improves and swash
The reliability of light device.
Further, laser further include: the amplifier that both ends are connect with the detection circuit, the processor respectively；
Correspondingly, the method also includes: amplifier amplifies the voltage signal.Such as: in conjunction with the corresponding embodiment of Fig. 5 to this into
Row explanation.Disclosure another exemplary embodiment provides a kind of Poewr control method of laser, and this method includes following step
It is rapid:
In step S501: photocell emits light.
In step S502: grating eyeglass breaks up the transmitting light.
In step S503: produced by light receiving element receives the grating eyeglass during breaing up the transmitting light
Reflected light.
In step S504: the reflected light is converted to current signal by light receiving element.
Step S506: current signal is converted to voltage signal by detection circuit.
In step s 507: amplifier amplifies voltage signal.
In step S505b: when the voltage signal is greater than first voltage threshold value, controlling the light of the photocell
Transmission power becomes smaller；When the voltage signal is less than second voltage threshold value, the light emitting power of the photocell is controlled
Become larger.
To sum up, the disclosure provides a kind of Poewr control method of laser, wherein this method comprises: amplifier amplifies voltage
Signal, so as to the more accurate control light emitting power of processor.
Further, laser further include: the driving that both ends are connect with the processor, the photocell respectively
Circuit；Correspondingly, the processor controls the light emitting power of the photocell according to the current signal, comprising: institute
It states processor and the driving circuit generation driving signal is controlled according to the current signal；Wherein, the driving signal is for controlling
Make the light emitting power of the photocell.
Such as: it is illustrated in conjunction with the corresponding technical solution of Fig. 6: when the current signal is greater than the first current threshold,
The processor generates the first driving signal according to current signal, and first driving signal is for controlling the photocell
Light emitting power become smaller；When the current signal is less than the second current threshold, the processor is generated according to current signal
Second driving signal, the light emitting power which is used to control the photocell become larger.
It is illustrated in conjunction with the corresponding technical solution of Fig. 7: when the voltage signal is greater than first voltage threshold value, the place
It manages device and third driving signal is generated according to voltage signal, which is used to control the light hair of the photocell
Power is penetrated to become smaller；When the voltage signal is less than second voltage threshold value, the processor generates 4 wheel driven according to voltage signal
Dynamic signal, the light emitting power which is used to control the photocell become larger.
The disclosure provides a kind of Poewr control method of laser, and wherein processor is according to current signal control
Driving circuit generates driving signal；The driving signal is used to control the light emitting power of the photocell, and then improves and swash
The reliability of light device.
In the exemplary embodiment, a kind of non-transitorycomputer readable storage medium including instruction, example are additionally provided
It such as include the memory of instruction, above-metioned instruction can be executed by processor to complete the above method.For example, the non-transitory meter
Calculation machine readable storage medium storing program for executing can be ROM, random access memory (RAM), CD-ROM, tape, floppy disk and optical data storage and set
It is standby etc..
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by following
Claim is pointed out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the accompanying claims.
Claims (18)
1. a kind of laser characterized by comprising photocell, light receiving element, grating eyeglass and processor；
The photocell is for emitting light；
The grating eyeglass is for breaing up the transmitting light；
The light receiving element is used to receive the grating eyeglass generated reflected light during breaing up the transmitting light,
And the reflected light is converted into current signal；
The processor is used to control the light emitting power of the photocell according to the current signal.
2. laser according to claim 1, which is characterized in that the processor is specifically used for:
When the current signal is greater than the first current threshold, the light emitting power for controlling the photocell becomes smaller；
When the current signal is less than the second current threshold, the light emitting power for controlling the photocell becomes larger.
3. laser according to claim 1, which is characterized in that further include: both ends respectively with the light receiving element, institute
State the detection circuit of processor connection；
The detection circuit is used to the current signal being converted to voltage signal；
Correspondingly, the processor is specifically used for:
When the voltage signal is greater than first voltage threshold value, the light emitting power for controlling the photocell becomes smaller；
When the voltage signal is less than second voltage threshold value, the light emitting power for controlling the photocell becomes larger.
4. laser according to claim 3, which is characterized in that further include: both ends respectively with the detection circuit, described
The amplifier of processor connection；
The amplifier is for amplifying the voltage signal.
5. laser according to claim 1-4, which is characterized in that further include: both ends respectively with the processing
The driving circuit that device, the photocell connect；
Correspondingly, the processor is specifically used for:
The processor controls the driving circuit according to the current signal and generates driving signal；
Wherein, the driving signal is used to control the light emitting power of the photocell.
6. laser according to claim 1, which is characterized in that the photocell and the light receiving element are located at
Same level.
7. laser according to claim 6, which is characterized in that the light receiving element is embedded in the photocell
In.
8. laser according to claim 1, which is characterized in that the photocell and the light receiving element away from
From less than pre-determined distance.
9. according to the described in any item lasers of claim 6-8, which is characterized in that the grating eyeglass is located at the light emitting
The top of element and the light receiving element.
10. a kind of Poewr control method of laser, which is characterized in that the method is applied to laser, the laser packet
It includes: photocell, light receiving element, grating eyeglass and processor；Correspondingly, which comprises
The photocell emits light；
The grating eyeglass breaks up the transmitting light；
The light receiving element receives grating eyeglass generated reflected light during breaing up the transmitting light；By institute
It states reflected light and is converted to current signal；
The processor controls the light emitting power of the photocell according to the current signal.
11. according to the method described in claim 10, it is characterized in that, the processor is according to current signal control
The light emitting power of photocell, comprising:
When the current signal is greater than the first current threshold, the processor controls the light emitting power of the photocell
Become smaller；
When the current signal is less than the second current threshold, the processor controls the light emitting power of the photocell
Become larger.
12. according to the method described in claim 10, it is characterized in that, the laser further include: both ends respectively with the light
The detection circuit that receiving element, the processor connect；
Correspondingly, the processor also wraps before according to the light emitting power that the current signal controls the photocell
It includes:
The current signal is converted to voltage signal by the detection circuit；
Then the processor controls the light emitting power of the photocell according to the current signal, comprising:
When the voltage signal is greater than first voltage threshold value, the light emitting power for controlling the photocell becomes smaller；
When the voltage signal is less than second voltage threshold value, the light emitting power for controlling the photocell becomes larger.
13. according to the method for claim 12, which is characterized in that the laser further include: both ends respectively with the inspection
The amplifier that slowdown monitoring circuit, the processor connect；
Correspondingly, the method also includes:
The amplifier amplifies the voltage signal.
14. the described in any item methods of 0-13 according to claim 1, which is characterized in that the laser further include: both ends difference
The driving circuit being connect with the processor, the photocell；
Correspondingly, the processor controls the light emitting power of the photocell according to the current signal, comprising:
The processor controls the driving circuit according to the current signal and generates driving signal；
Wherein, the driving signal is used to control the light emitting power of the photocell.
15. according to the method described in claim 10, it is characterized in that, the photocell and the light receiving element are located at
Same level.
16. according to the method for claim 15, which is characterized in that the light receiving element is embedded in the photocell
In.
17. according to the method described in claim 10, it is characterized in that, the photocell and the light receiving element away from
From less than pre-determined distance.
18. the described in any item methods of 5-17 according to claim 1, which is characterized in that the grating eyeglass is located at light hair
Penetrate the top of element and the light receiving element.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810943290.1A CN109301685A (en) | 2018-08-17 | 2018-08-17 | The Poewr control method and laser of laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810943290.1A CN109301685A (en) | 2018-08-17 | 2018-08-17 | The Poewr control method and laser of laser |
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| CN109861756A (en) * | 2019-03-25 | 2019-06-07 | Oppo广东移动通信有限公司 | The control system and terminal of flight time component |
| CN109946704A (en) * | 2019-03-26 | 2019-06-28 | Oppo广东移动通信有限公司 | Control system and control method, the terminal of flight time component |
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