CN107643127A - A kind of portable heavy caliber real time laser energy gauge and method - Google Patents
A kind of portable heavy caliber real time laser energy gauge and method Download PDFInfo
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- CN107643127A CN107643127A CN201710835373.4A CN201710835373A CN107643127A CN 107643127 A CN107643127 A CN 107643127A CN 201710835373 A CN201710835373 A CN 201710835373A CN 107643127 A CN107643127 A CN 107643127A
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Abstract
The invention discloses a kind of portable heavy caliber real time laser energy gauge and its method, the system is mainly made up of diaphragm, heavy caliber convergent lens, spectroscope, optical chopper, high speed pyroelectricity probe, infrared CCD, intelligent signal converter and processing unit.The pulse laser that remote laser range finder projects converges to spectroscope after diaphragm, then by heavy caliber convergent lens；Most of laser is fallen in spectroscope transmission, its reflection laser injects high speed pyroelectricity probe after optical chopper, infrared CCD monitors the laser spot position in high speed pyroelectricity probe in real time, the data collected by intelligent signal converter and processing unit to high speed pyroelectricity probe are handled, and obtain measurement result.The present invention not only solves existing for prior art the technical problems such as bore is small, speed is slow, energy density damage threshold is low simultaneously, the real-time measurement to remote laser range finder shoot laser energy is realized, and has had the power measurement function for continuous laser concurrently.
Description
Technical field
The invention belongs to design photoelectric measurement field, more particularly to a kind of measurement of laser energy system and method.
Background technology
With the gradual development of laser technology, the application of laser is increasingly popularized, and especially remote laser range finder makes
After a period of time, generally can not judge its emanated energy has decayed how many, or actual emanated energy how many.Pulse laser
The pulse laser that range finder is launched is typically single transmitting, but some laser ranging chances launch train of pulse, with
Ask and obtain higher measurement accuracy.In general, the energy of individual pulse laser is the pass for weighing pulse laser range finder ranging
One of key index, the train of pulse that some laser range finders are launched are one of index of measurement range finder quality.Each train of pulse
Interior individual pulse frequency about 2KHz, then to measure the information of train of pulse it is necessary to make pyroelectricity probe and device afterwards all
The measurement of high speed can be carried out.The optical maser wavelength that pulse laser range finder is sent is 1064nm, and pulsewidth typically only has 10ns left
The right side, and the outgoing bore of remote laser range finder typically has 100mm or so, and this requires measuring system to have larger entrance port
Footpath.Although the energy measurement meter in Traditional Scientific experiment can also measure the laser energy of pulse, its bore is typically not
Enough big and traditional pyroelectricity probes can handle pulse frequency and at most also there was only hertz up to a hundred, and this can not meet in real time
The requirement of property.Moreover, measurement of laser energy device of the prior art also has a measurement of laser energy equipment volume larger, bore
Small, measurement frequency is low, it has not been convenient to the defects of carrying.
Measurement laser energy device has many types, and up to the present, the country mainly has in terms of measurement of laser energy：In
Ke Yuan Shanghai ray machine institute high power laser light physical union laboratory, Lin Kangchun et al. are used for the heavy caliber energy of the frequency tripling of God Light II
Gauge, but its bore 300mm, measurement energy 2000J, but generally involve great expense, be sufficiently bulky, and it is unsuitable for laser
Range finder.Shanghai ray machine institute of the Chinese Academy of Sciences, the JK-80 large aperture laser energy meters that Wang Ruihua et al. is developed, its bore only use 80mm,
Its bore is not big enough, and its time of measuring interval wants one minute, and measuring speed is too slow, so it is not suitable for laser ranging yet
Machine.The large aperture laser energy meter of Xi'an Applied Optics Research Inst., thunder person of outstanding talent et al., its bore 100mm, no collective lens, enters
Penetrate laser to be directly incident in pyroelectricity probe, so its actual energy density damage threshold for measuring is relatively low, then this to set
Meter is also not suitable for pulse laser range finder.
The content of the invention
It is an object of the invention to：In order to measure the energy of remote laser range finder, its energy attenuation situation is detected, there is provided
A kind of portable heavy caliber real time laser energy gauge and method, not only solve in measurement remote laser range finder outgoing
The technical problems such as existing bore is small during energy, speed is slow, energy density damage threshold is low, are realized to remote laser range finder
The real-time measurement of shoot laser (pulse laser) energy, and had the power measurement function for continuous laser concurrently.In addition, this
Invention also can solve the problem that current measurement of laser energy equipment volume is larger, it has not been convenient to the technical problem of carrying.
The technical solution adopted by the present invention is as follows：
A kind of portable heavy caliber real time laser energy gauge, including
Heavy caliber convergent lens, pulse laser/continuous laser for remote laser range finder to be projected are assembled, and incident
To spectroscope；
Spectroscope, incided at a high speed for reflection and transmitted pulse laser/continuous laser, and by the pulse laser after reflection
Pyroelectricity probe；
Optical chopper, by step motor control, for controlling thang-kng hole site, allow pulse laser by dichroic mirror
Completely pass through；The continuous laser that spectroscope is incided to optical chopper is modulated to rectangular pulse laser, and control rectangle pulse
The modulating frequency of laser；
High speed pyroelectricity probe, for measuring the energy through the incident next rectangular pulse laser/pulse laser of optical chopper
Data are measured, and the energy datum measured is delivered to intelligent signal converter；
Intelligent signal converter, for the energy datum received to be converted into software processing signal, and it is delivered to processing
Device；
Processing unit, for receiving and handling software processing signal, obtain the survey of rectangular pulse laser/pulsed laser energy
Result is measured, or calculates to obtain the power of continuous laser according to modulating frequency and rectangular pulse laser energy.
Further, in addition to infrared CCD, for monitoring rectangular pulse laser/pulsed laser irradiation in high speed pyroelectricity
Representation of laser facula on probe position (representation of laser facula in high speed pyroelectricity probe successively along optical chopper, point
Light microscopic reflects to infrared CCD), and the representation of laser facula monitored is delivered to processing unit.
Further, in addition to heat sink device, for absorbing heat caused by high speed pyroelectricity probe.
Further, in addition to heat dustbin, for discharging pulse laser/continuous laser energy after spectroscope transmission
With the redundant energy in space.
Further, spectroscope is using the spectroscope that reflectivity is 5%~10%.
Further, in addition to shell, for by heavy caliber convergent lens, spectroscope, optical chopper, high speed pyroelectricity
In the inner, and opening is left in its (i.e. shell) position relative with heavy caliber convergent lens for probe and processing unit installation, and this is opened
Mouth is used to serve as diaphragm.Diaphragm limitation receives the aperture of light beam, spot size.
Further, spectroscope is set with optical axis in 45 °.
Further, a diameter of 120mm of heavy caliber convergent lens.
A kind of portable heavy caliber real time laser energy measuring method, comprises the following steps：
(a) pulse laser that heavy calibers convergent lens projects remote laser range finder/continuous laser is assembled, and incident
To spectroscope；
(b) dichroic mirrors and transmitted pulse laser/continuous laser, and the pulse laser after reflection is incided at a high speed
Pyroelectricity probe；The continuous laser that spectroscope is incided to optical chopper by the optical chopper by step motor control is adjusted
It is made as rectangular pulse laser, and the modulating frequency of control rectangle pulse laser；And thang-kng hole site is controlled, is allowed anti-by spectroscope
The pulse laser penetrated completely passes through；
(c) energy of the high speeds pyroelectricity probe measurement through the incident next rectangular pulse laser/pulse laser of optical chopper
Data, and the energy datum measured is delivered to intelligent signal converter；
(d) energy datum received is converted to software processing signal by intelligent signals converter, and is delivered to processing dress
Put；
(e) processing units receive and handled software processing signal, obtain the survey of rectangular pulse laser/pulsed laser energy
Result is measured, or calculates to obtain the power of continuous laser according to modulating frequency and rectangular pulse laser energy.
Further, methods described, also comprise the following steps：
Using infrared CCD monitoring rectangular pulse laser/laser facula of the pulsed laser irradiation in high speed pyroelectricity probe
The position of image, and the representation of laser facula monitored is delivered to processing unit；
Further, methods described, also comprise the following steps：
Heat caused by high speed pyroelectricity probe is absorbed using heat sink device.
Further, methods described, also comprise the following steps：
Using the redundant energy in the pulsed laser energy and space after the discharge spectroscope transmission of heat dustbin.
A kind of laser power measurement system, including
Convergent lens, the continuous laser for laser range finder to be projected is assembled, and incides spectroscope；
Spectroscope, optical chopper is incided for reflecting and transmiting continuous laser, and by the continuous laser after reflection；
Optical chopper, by step motor control, for controlling thang-kng hole site, allow pulse laser by dichroic mirror
Completely pass through；The continuous laser that spectroscope is incided to optical chopper is modulated to rectangular pulse laser, and control rectangle pulse
The modulating frequency of laser；
Pyroelectricity probe, for measure through optical chopper it is incident come pulse laser energy datum, and will measure
Energy datum is delivered to intelligent signal converter；
Intelligent signal converter, for the energy datum received to be converted into software processing signal, and it is delivered to processing
Device；
Processing unit, calculated for receiving software processing signal, and according to modulating frequency and rectangular pulse laser energy
To the power of continuous laser.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. the main improvement of the present invention is, using heavy caliber convergent lens, incident light (continuous laser) can be assembled,
Acted on using spectroscopical light splitting, reduce the laser energy reflexed in high speed pyroelectricity probe, can avoid because high speed heat is released
The laser energy that electric probe receives is too high and damage, can also avoid because the laser energy of high speed pyroelectricity probe reception is too low and
Measurement is inaccurate, expands the measurement range of laser energy, while solve when measuring remote laser range finder emanated energy
The technical problems such as existing bore is small, speed is slow, energy density damage threshold is low, realize and the outgoing of remote laser range finder is swashed
The real-time measurement of light (continuous laser) energy；Simultaneously as the addition of optical chopper, passes through step motor control optics copped wave
Device, the continuous laser that spectroscope is incided to high speed pyroelectricity probe is modulated to rectangular pulse laser, and control rectangle pulse swashs
The modulating frequency of light, processing unit just can calculate to obtain the work(of continuous laser by modulating frequency and rectangular pulse laser energy
Rate；Therefore, the present invention can not only measure the energy of pulse laser, but also have the measurement function of continuous laser power concurrently.
Due to the shorter heavy caliber convergent lens of focal length, heavy caliber convergent lens assembles incident light, and heavy caliber is assembled saturating
Mirror and spectroscope, the whole light for being monolithically fabricated the scale that can control whole light path, system being made of high speed pyroelectricity probe
Road is controlled under rational size, reduces the volume of system, so as to improve the portability of whole system, solves prior art
Present in measurement of laser energy equipment volume it is larger, be unfavorable for carry technical problem.
Additionally, due to the effect of spectroscope and high speed pyroelectricity probe, the damage of high speed pyroelectricity probe can not only be reduced
Hinder probability, also ensure that high speed pyroelectricity probe detects laser, and enter using the outstanding disposal ability of high speed pyroelectricity probe
The quick data processing of row so that the present invention is in addition to possessing portability, additionally it is possible to reach the mesh of measurement laser energy in real time
's.
2. the present invention also provides a kind of individually laser power measurement system, by step motor control optical chopper,
The modulation of laser is realized, controls modulating frequency, processing unit can just pass through the energy and modulating frequency of the laser pulse measured
The power of continuous laser is calculated.Specifically, when the laser energy of reception be by continuous laser modulation Lai laser pulse when,
Step motor control optical chopper chopping frequency is 4Hz (being only citing, can also be other frequencies), and pyroelectricity probe is per second
Four subpulse energy are measured, it is 4 that processing unit (software inhouse), which sets pulse accumulation number, and processing unit is received from intelligent letter
When number converter transmits pending data, four subpulse energy accumulations are got up in processing unit, what one second measured
Pulse energy add up gained energy value, be continuous laser performance number.After cumulative four subpulse energy, processing dress
Put and start next round accumulation loop.Traditional method is directly to measure power using power sensor, and the application is existing
Measurement of laser energy equipment in cleverly add a chopper so that its be not required in addition set power sensor situation
Under the measure of power realized by the cooperation of chopper and pyroelectricity probe.
3. with shell by heavy caliber convergent lens, spectroscope, optical chopper, high speed pyroelectricity probe and processing unit etc.
Part (can also include heat sink device, infrared CCD and heat dustbin in other schemes etc.) installation in the inner, is integrated into one
Individual portable measurement of laser energy device；And the application is directly to serve as diaphragm with the opening on shell, has both simplified structure
Composition, reduces cost again.
4. heat sink device is high thermal conductivity material, it is close under high speed pyroelectricity probe, absorbs high speed pyroelectricity and visit
Head redundancy heat caused by working long hours or testing, contributes to the release of high speed pyroelectricity probe heat, heat sink dress
The combination put with high speed pyroelectricity probe can improve the mean power damage threshold of high speed pyroelectricity probe.
5. the use of infrared CCD, then be facilitate laser facula in monitoring system running in high speed pyroelectricity probe
On position, it is ensured that high speed pyroelectricity probe being capable of accurate measurement laser energy.
6. because in integrated optical system, inevitable federation produces the heat of redundancy in systems, especially
By the light of spectroscope transmissive, these can all influence the measurement of high speed pyroelectricity probe, and heat dustbin can handle
These unnecessary veiling glares and heat discharge；It is main to absorb spectroscope transmission potential after heat dustbin is located at spectroscope, can be with
Toward redundancy heat caused by the outer discharge system of system, reducing can be due to productions such as scattering light in measuring system/device of closing
The measurement that raw heat is popped one's head in energy has an impact；Heat dustbin can be very high material of miniature bellows, absorptivity etc.,
Also require that the inner surface of outer cover of system uses coarse, high-absorbility material simultaneously, this is also a kind of method for ensureing system accuracy.
7. preferred reflectance of the present invention is 5%~10% spectroscope, and ensures optical axis and spectroscope angle at 45 °.Point
Light microscopic will also use high grade quartz, and reflecting surface plating 1064nm high-energy-density damage thresholds Anti-reflective coating, transmission plane plating 1064nm
High-energy-density damage threshold anti-reflection film, so both ensure that precision, also improve spectroscopical energy density damage threshold.
8. present invention uses optical chopper, continuous laser can be converted to pulse laser, can so be improved flat
Equal power, make measurement more accurate；Simultaneously when measuring continuous laser, it is desirable to which the energy of continuous laser can not be excessive, no
Then it is easily damaged pyroelectric detector；Also, the application mainly for narrow-pulse laser, stepper motor is to may insure pulse
The laser facula of laser can be completely by the light hole of optical chopper, and measurement of the optical chopper for laser energy is that do not have
It is influential.
9. present invention uses high speed pyroelectricity probe, measurement range is 0.2mJ -10J, but due to spectroscopical
Light splitting, actual measurement range can reach 4mJ -200J (during dichroic mirror rate 5%)；And its inter-process frequency can be high
Up to 2KHz, with reference to intelligent signal converter and the processing unit (software processing) of high speed, even if the transmitting of some laser range finders
It is train of pulse, then high speed pyroelectricity probe also being capable of real-time processing data.
10. present invention uses the data processing that processing unit carries out software section, processing unit is changed from intelligent signal
Device obtains pulsed laser energy data, and according to the design of whole system, statistical is carried out to the data received in processing unit
Analysis, can also be stored and be shown according to real needs, and processing unit can intuitively observe the laser energy of incidence
Change and size.
Brief description of the drawings
Fig. 1 systematic schematic diagrams；
Fig. 2 embodiments flow-hardware；
Fig. 3 embodiments flow-software；
In Fig. 1：1-diaphragm (is used as diaphragm using at the shell aperture at heavy caliber convergent lens), and 2-heavy caliber is assembled saturating
Mirror, 3-spectroscope, 4-heat dustbin, 5-optical chopper, 6-infrared CCD (miniature), 7-high speed pyroelectricity probe,
8-heat sink device, 9-processing unit, 10-intelligent signal converter, 11-stepper motor, 12-power supply.
Embodiment
The illustrative embodiments of the present invention are described in detail with reference to the accompanying drawings, it is all disclosed in this specification
Feature, in addition to mutually exclusive feature and/or step, it can combine in any way.
The present invention is described further below in conjunction with 1~Fig. 3 of accompanying drawing, but not as the limit to the present invention and its application
It is fixed.
Embodiment 1
A kind of portable heavy caliber real time laser energy gauge, including
Power supply 12, there is provided working power；
Heavy caliber convergent lens 2, pulse laser/continuous laser for remote laser range finder to be projected are assembled, are incorporated to
It is mapped to spectroscope；
Spectroscope 3, for reflection and transmitted pulse laser/continuous laser, and the pulse laser after reflection is incided into height
Fast pyroelectricity probe；
Optical chopper 5, controlled by stepper motor 11, for controlling thang-kng hole site, allow pulse by dichroic mirror
Laser completely passes through；The continuous laser that spectroscope is incided to optical chopper is modulated to rectangular pulse laser, and control rectangle
The modulating frequency of pulse laser；
High speed pyroelectricity probe 7, for measuring the energy number through the incident next rectangular pulse laser/pulse laser of spectroscope
According to, and the energy datum measured is delivered to intelligent signal converter；
Intelligent signal converter 10, using USB interface, for the energy datum received to be converted into software processing signal
(signal that i.e. software can be handled in processing unit), and it is delivered to processing unit；
Processing unit 9, preferably tablet personal computer, for receiving and handling software processing signal, obtain rectangular pulse laser/arteries and veins
The measurement result of impulse light energy, or calculate to obtain the power of continuous laser according to modulating frequency and rectangular pulse laser energy
If (what remote laser range finder projected is pulse laser, does not calculate power), for reception by continuous laser modulation Lai
Laser pulse (rectangular pulse), software inhouse by the pulse energy that one second obtains add up gained energy value, be continuous
The performance number of laser.
The laser pulse of remote laser range finder：Wavelength 1064nm, pulsewidth 10ns or so, shoot laser beam diameter are about
100mm。
Heavy caliber convergent lens 2, using F#3 convergent lenses, diameter 120mm, make material using high grade quartz, before and after lens
1064nm high-energy-density damage threshold anti-reflection films will be plated, such energy density damage threshold is about under 1064nm wavelength
5J/cm2, transmission accuracy rate is 99.9%, so both ensure that precision, convergent lens is had higher energy density damage
Threshold value.
Power supply 12 is lithium ion battery, and lithium ion battery (12V lithium batteries) can realize the normal power supply to whole system,
So that system is easy to carry.
Spectroscope 3 reduces the laser incided in high speed pyroelectricity probe using the spectroscope that reflectivity is 10%
Energy, reduce the damage probability of high speed pyroelectricity probe.
Embodiment 2
The present embodiment and the main distinction of embodiment 1 are that, compared to the spectroscope that reflectivity is 10%, the present embodiment is adopted
It is the spectroscope 3 that reflectivity is 5%, not only reduces the laser energy incided in high speed pyroelectricity probe 7, reduces high
The damage probability of fast pyroelectricity probe, and can be before guarantee high speed pyroelectricity probe 7 accurately can detect laser energy
Put, expand energy measurement scope.
It is further noted that when selecting the spectroscope 3 of different emissivity, it should big according to the energy to be measured
Depending on small.The present invention only there is provided the conventional spectroscope of two different splitting ratios, i.e. reflectivity is 5% or 10% light splitting
Mirror, therefore, selection reflectivity is also had less than 5% or reflectivity is higher than 10% spectroscope.
Embodiment 3
The present embodiment and the main distinction of embodiment 1 are, in addition to a shell, for by heavy caliber convergent lens 2,
The installations such as spectroscope 3, optical chopper 5, high speed pyroelectricity probe 7 and processing unit 9 in the inner, and its (i.e. shell) and big mouth
Opening is left in the relative position of footpath convergent lens 2, and the opening is used to serve as diaphragm 1.The limitation of diaphragm 1 receives the aperture of light beam, light
Spot size.
Embodiment 4
The present embodiment and the main distinction of embodiment 1 are, in addition to heat sink device 8, are visited for absorbing high speed pyroelectricity
Heat caused by first 7.
Embodiment 5
The present embodiment and the main distinction of embodiment 1 be, infrared CCD 6, using USB interface, for monitoring rectangular pulse
Position (the swashing in high speed pyroelectricity probe of representation of laser facula of the laser/pulsed laser irradiation in high speed pyroelectricity probe 7
Light light spot image reflects along optical chopper 5, spectroscope 3 to infrared CCD 6 successively), and the representation of laser facula monitored is passed
It is delivered to processing unit 9.
Embodiment 6
The present embodiment and the main distinction of embodiment 1 are, in addition to heat dustbin 4, for discharging spectroscope transmission
Redundant energy in pulse laser afterwards/continuous laser energy and space.
Embodiment 7
The present embodiment is the combination of the technical scheme of embodiment 1~6, meanwhile, and the most preferred implementation of the application
Example.This implementation is mainly for narrow-pulse laser, a kind of portable heavy caliber real time laser energy measuring method, including following step
Suddenly：
(1) remote lasers range finder projects pulse laser, and incident pulse laser incides heavy caliber by diaphragm limitation
Convergent lens 2；
(2) pulse laser that is emitted from heavy caliber convergent lens 2 is converged on spectroscope 3；
(3) pulse laser of transmitted through spectroscope 3 enters heat dustbin 4；The pulse laser of dichroic mirror incides
High speed pyroelectricity probe 7；
(4) heat sink devices 8 absorb heat unnecessary caused by high speed pyroelectricity probe, what high speed pyroelectricity probe 7 measured
Energy datum is transferred to processing unit 9 via intelligent signal converter 10, and after-treatment device 9 handles corresponding data；System is transported
The position that the representation of laser facula of high speed pyroelectricity probe 7 is incided in row is monitored by infrared CCD 6.
When implementing, in the following way：
Each optics (i.e. heavy caliber convergent lens 2 and spectroscope 3 etc.) is placed in appropriately distance, and by each device
Adjust in same light path, and system shell inner surface will use black rough surface, while intelligence is installed according to such scheme
Signal adapter and processing unit etc..
The power supply of opening system, then incident light (narrow-pulse laser) is incided on heavy caliber convergent lens along optical axis,
Hot spot is all in diaphragm 1, it is ensured that hot spot is all incided on a diameter of 120mm heavy caliber convergent lens 2, and heavy caliber is assembled saturating
Mirror transmissivity error is less than 0.1%.
Adjustment spectroscope 3 is fixed as 45 ° with optical axis, it is ensured that only about 5% incident pulse laser is ultimately incident upon at a high speed
In pyroelectricity probe 7, the error of dichroic mirror rate is also less than 0.1%.
It is placed on mini-fan as a part for heat dustbin 4 behind spectroscope, produced by discharging all transmitted lights
Heat, and also heat caused by itself in discharge part system operation.Ensure that mini-fan can be in discharge system
The heat that PE-50C measurement may be had an impact.
Optical chopper 5 is adjusted, what it is due to incidence is narrow-pulse laser, so, optical chopper 5 can be by electric with it
The stepper motor adjustment thang-kng hole site of connection, it is ensured that pulse laser can pass through optical chopper 5 completely.
Now it can monitor whether laser facula is beaten in high speed pyroelectricity probe 7 completely by infrared CCD 6 (miniature),
If laser facula is beaten in high speed pyroelectricity probe 7 without whole, then spectroscope 3 can be adjusted, so that it is guaranteed that laser light
Spot is all in the working face of high speed pyroelectricity probe 7.
The model PE-50C of high speed pyroelectricity probe 7, its measurement error is about ± 3%, due to heavy caliber convergent lens
It is far smaller than itself error with spectroscope error, so its overall root-mean-square error about ± 3%, the energy of high speed pyroelectricity probe
Measurement range 0.2mJ -10J, system actual measurement range are that 4mJ -200J working frequencies can reach 2KHz, bore φ 46,
Energy density threshold 0.1J/cm2.The laser facula that high speed pyroelectricity probe 7 actually receives should be less than φ 40, accordingly even when entering
Penetrating light has the deviation of somewhat angle, nor affects on the measurement of actual energy.PE-50C parameter complies fully with practical laser ranging
The requirement of machine.And it is placed on the copper sheet of high heat conductance as heat sink device 8 below high speed pyroelectricity probe 7, to absorb height
Fast pyroelectricity probe 7 due to long-play or projectile energy it is excessive and overflow energy.
The processing step of processing unit (software section) is as follows：
1. turn on the power, software；
2. detection device (i.e. intelligent signal processing module 10 and high speed pyroelectricity probe 7)；
3. after equipment is detected, equipment is opened and whether detection device can normal work；
4. device parameter is set；
5. pulse laser is detected whether；
6. when detecting pulse laser, the data of high speed pyroelectricity probe laser energy are received；
7. count measured data；
8. display data (image), and it is confirmed whether storage energy and supplemental characteristic；After confirming to store, by energy and ginseng
Number data are stored；
9. it is confirmed whether to close；
10, when confirming to close, store software design patterns；
11. close power supply, software.
The present invention uses heavy caliber convergent lens 2, incident light can be assembled, simultaneously because the focal length of heavy caliber convergent lens 2
Shorter, heavy caliber convergent lens 2 assembles incident light, in conjunction with spectroscope 3, high speed pyroelectricity probe 7, can make the whole of system
Individual light path control reduces the volume of system under rational size, is carried so as to easily facilitate.From PE-50C transmission
Signal, by intelligent signal converter 10, be converted to processing unit 9 (software section) manageable signal.Processing unit 9 obtains
The data transmitted from high speed pyroelectricity probe 7 have been taken, according to the actual decay of the system, have calculated incident pulse laser
Actual energy.The system needs to store data, its data/figure is also intuitively seen on the interface of processing unit 9
The change in location of picture, so processing unit 9 can also carry out corresponding storage and display to data.All software modules are to locate
Run on reason device 9, while the real-time display of infrared CCD 6 (small-sized) is also that can be shown in processing unit 9, therefore,
Whole system is easy for what is carried, and it is larger to solve measurement of laser energy equipment volume present in prior art, is unfavorable for taking
The technical problem of band；Additionally, due to the effect of spectroscope 3 and high speed pyroelectricity probe 7, can not only reduce the spy of high speed pyroelectricity
First 7 damage probability, also ensure that high speed pyroelectricity probe 7 detects laser, and carried out quickly using high speed pyroelectricity probe 7
Data processing so that the present invention is in addition to possessing portability, additionally it is possible to reaches the purpose of quick measurement laser energy.
Embodiment 8
It is with the main distinction of embodiment 6, what testing laser device projected is continuous laser.
(1) testing lasers device projects continuous laser, and the continuous laser after the limitation of diaphragm 1, which incides heavy caliber, to be assembled
Lens 2：
(2) continuous laser that is emitted from heavy caliber convergent lens 2 is converged on spectroscope 3：
(3) continuous laser of transmitted through spectroscope 3 enters heat dustbin 4；The continuous laser that spectroscope 3 reflects is through light
Learn chopper 5 and be modulated (optical chopper 5, with the incident next laser of modulation, controls modulating frequency by step motor control),
And incide high speed pyroelectricity probe 7；
(4) heat sink devices 8 absorb heat unnecessary caused by high speed pyroelectricity probe, and high speed pyroelectricity probe measures
Energy signal is transferred to processing unit 9 via intelligent signal converter 10, and after-treatment device 9 is according to modulating frequency and rectangle arteries and veins
The power of continuous laser is calculated in impulse light energy；The laser facula figure of high speed pyroelectricity probe 7 is incided in system operation
The position of picture is monitored by infrared CCD 6.
When incident laser is continuous laser, continuous laser power is calculated according to modulating frequency for processing unit method
It is as follows：
When the laser energy of reception be by continuous laser modulation Lai laser pulse when, stepper motor 11 controls in this example
Optical chopper rotating speed is 25 turns per second, and its modulating frequency is 100Hz (only be citing, can also be other frequencies), high speed heat
Release that electric probe is per second to measure 100 subpulse energy Wn, it is 100 that processing unit (software inhouse), which sets pulse accumulation number, processing
Device 9 receive from intelligent signal converter 10 transmit pending data when, by 100 subpulse energy in processing unit 9
Wn(n=1,2,3 ..., 100) adds up, and power definition is：Pyroelectricity probe measures one second energy summation and time
The ratio of one second is the power of continuous laser.That is one second pulse energy measured add up gained energy value, be connect
The performance number of continuous laser.Rating formula is in the present embodiment：In cumulative 100 subpulse energy WnAfterwards, locate
Reason device starts next round accumulation loop.
Embodiment 9
The present embodiment provides a kind of single laser power measurement system, and the inspection of power is carried out for continuous laser
Survey, system includes
Convergent lens, the continuous laser for laser range finder to be projected is assembled, and incides spectroscope；
Spectroscope, optical chopper is incided for reflecting and transmiting continuous laser, and by the continuous laser after reflection；
Optical chopper, by step motor control, the continuous laser for spectroscope to be incided to optical chopper is modulated
For rectangular pulse laser, and the modulating frequency of control rectangle pulse laser；
Pyroelectricity probe, for measure through optical chopper it is incident come continuous laser energy datum, and will measure
Energy datum is delivered to intelligent signal converter；
Intelligent signal converter, for the energy datum received to be converted into software processing signal, and it is delivered to processing
Device；
Processing unit, calculated for receiving software processing signal, and according to modulating frequency and rectangular pulse laser energy
To the power of continuous laser.
The calculation of power is as described in Example 8.
Although described above done detailed elaboration to the present invention, it is to be understood that, not each embodiment only includes
One independent technical scheme, specification is set forth to should be readily appreciated that the present invention, to those skilled in the art, not
In the case of deviateing claims restriction scope, those skilled in the art can carry out appropriate change to the example.
What the present invention did not elaborated partly belongs to techniques well known, and those skilled in the art are according to existing description
It can on the premise of not paying creative work be implemented, therefore, be repeated no more.
Claims (10)
- A kind of 1. portable heavy caliber real time laser energy gauge, it is characterised in that includingHeavy caliber convergent lens, the pulse laser/continuous laser for remote laser range finder to be projected are assembled, and are incided point Light microscopic；Spectroscope, for reflection and transmitted pulse laser/continuous laser, and the pulse laser after reflection is incided into high speed heat and released Electric probe；Optical chopper, by step motor control, for controlling thang-kng hole site, allow complete by the pulse laser of dichroic mirror Pass through；The continuous laser that spectroscope is incided to optical chopper is modulated to rectangular pulse laser, and control rectangle pulse laser Modulating frequency；High speed pyroelectricity probe, for measuring the energy number through the incident next rectangular pulse laser/pulse laser of optical chopper According to, and the energy datum measured is delivered to intelligent signal converter；Intelligent signal converter, for the energy datum received to be converted into software processing signal, and it is delivered to processing unit；Processing unit, for receiving and handling software processing signal, obtain the measurement knot of rectangular pulse laser/pulsed laser energy Fruit, or calculate to obtain the power of continuous laser according to modulating frequency and rectangular pulse laser energy.
- 2. a kind of portable heavy caliber real time laser energy gauge as claimed in claim 1, it is characterised in that also include Infrared CCD, for monitoring the position of rectangular pulse laser/representation of laser facula of the pulsed laser irradiation in high speed pyroelectricity probe Put, and the representation of laser facula monitored is delivered to processing unit.
- 3. a kind of portable heavy caliber real time laser energy gauge as claimed in claim 1, it is characterised in that also include Heat sink device, for absorbing heat caused by high speed pyroelectricity probe.
- 4. a kind of portable heavy caliber real time laser energy gauge as claimed in claim 1, it is characterised in that also include Heat dustbin, for discharging the redundant energy in pulse laser/continuous laser energy and space after spectroscope transmits.
- A kind of 5. portable heavy caliber real time laser energy gauge as claimed in claim 1, it is characterised in that spectroscope Using the spectroscope that reflectivity is 5%~10%.
- 6. a kind of portable heavy caliber real time laser energy gauge as described in any one of Claims 1 to 5, its feature exist In processing unit is tablet personal computer.
- 7. a kind of portable heavy caliber real time laser energy measuring method, it is characterised in that comprise the following steps：(a) pulse laser that heavy calibers convergent lens projects remote laser range finder/continuous laser is assembled, and is incided point Light microscopic；(b) dichroic mirrors and transmitted pulse laser/continuous laser, and the pulse laser after reflection is incided into high speed heat and released Electric probe；By by step motor control thang-kng hole site, allowing and completely being passed through by the pulse laser of dichroic mirror；By spectroscope The continuous laser for inciding optical chopper is modulated to rectangular pulse laser, and the modulating frequency of control rectangle pulse laser；(c) energy number of the high speeds pyroelectricity probe measurement through the incident next rectangular pulse laser/pulse laser of optical chopper According to, and the energy datum measured is delivered to intelligent signal converter；(d) energy datum received is converted to software processing signal by intelligent signals converter, and is delivered to processing unit；(e) processing units receive and handled software processing signal, obtain the measurement knot of rectangular pulse laser/pulsed laser energy Fruit, or calculate to obtain the power of continuous laser according to modulating frequency and rectangular pulse laser energy.
- 8. a kind of portable heavy caliber real time laser energy measuring method as claimed in claim 7, it is characterised in that using red The position of outer CCD monitoring rectangular pulses laser/representation of laser facula of the pulsed laser irradiation in high speed pyroelectricity probe, and will The representation of laser facula monitored is delivered to processing unit.
- 9. a kind of portable heavy caliber real time laser energy measuring method as claimed in claim 7 or 8, it is characterised in that adopt Heat caused by high speed pyroelectricity probe is absorbed with heat sink device.
- A kind of 10. laser power measurement system, it is characterised in that includingConvergent lens, the continuous laser for laser range finder to be projected is assembled, and incides spectroscope；Spectroscope, optical chopper is incided for reflecting and transmiting continuous laser, and by the continuous laser after reflection；Optical chopper, by step motor control, the continuous laser for spectroscope to be incided to optical chopper is modulated to square Shape pulse laser, and the modulating frequency of control rectangle pulse laser；Pyroelectricity probe, for measuring the energy datum through the incident next pulse laser of optical chopper, and the energy that will be measured Data transfer is to intelligent signal converter；Intelligent signal converter, for the energy datum received to be converted into software processing signal, and it is delivered to processing unit；Processing unit, calculate and connected for receiving software processing signal, and according to modulating frequency and rectangular pulse laser energy The power of continuous laser.
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| CN201710835373.4A CN107643127A (en) | 2017-09-15 | 2017-09-15 | A kind of portable heavy caliber real time laser energy gauge and method |
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| CN201710835373.4A CN107643127A (en) | 2017-09-15 | 2017-09-15 | A kind of portable heavy caliber real time laser energy gauge and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108833007A (en) * | 2018-09-05 | 2018-11-16 | 台州市天启激光科技有限公司 | A kind of portable laser power detection device |
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