CN109738160A - Multi-light axis consistency test device and method based on laser communication system - Google Patents
Multi-light axis consistency test device and method based on laser communication system Download PDFInfo
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- CN109738160A CN109738160A CN201811635324.7A CN201811635324A CN109738160A CN 109738160 A CN109738160 A CN 109738160A CN 201811635324 A CN201811635324 A CN 201811635324A CN 109738160 A CN109738160 A CN 109738160A
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Abstract
The invention discloses a kind of multi-light axis consistency test devices based on laser communication system comprising without focus optical devices, laser beam emitting device, laser receiver, spectroscope, two-dimentional beat mirror and reflecting mirror；Laser beam emitting device is for emitting multiple laser；No focus optical devices are for receiving laser；Laser receiver is used to receive the laser after reflection and the laser of product to be measured transmitting, laser and the received laser coaxial of product to be measured after reflection；Laser beam emitting device and without being successively equipped with spectroscope, two-dimentional beat mirror between focus optical devices；Wherein, multiple laser that spectroscope is used to emit laser beam emitting device are split and reach two-dimentional beat mirror, and for the laser after the laser of the received product transmitting to be measured of no focus optical devices, transmitting to be sent to laser receiver；Reflecting mirror is between no focus optical devices and product to be measured.The present invention is applied to the light axis consistency detection of the laser communication system of multi-wavelength.
Description
Technical field
The present invention relates to free space laser communication fields, and in particular to a kind of more optical axises one based on laser communication system
Cause system safety testing device and method.
Background technique
Free space laser communication is a kind of communication mode that Long-range Data Transmission is realized using laser as information carrier, from
Communication Light Emitting Branch, beacon beam transmitting branch, Communication ray receiving branch etc. are generally comprised by laser space communication system, it is above-mentioned
Each branch respectively correspond respective optical axis, communication in laser space communication system transmitting optical axis, beacon light emitting optical axis,
The consistency of more optical axises such as communications reception optical axis directly determines the foundation of telecommunication link and the superiority and inferiority of communication performance, therefore
This proposes very high requirement to laser space communication multi-light axis consistency.
And in traditional multi-light axis consistency test and calibrating installation, heavy caliber parallel light tube is generally used, light pipe
Light source carries out calibration laser communication system using broad spectrum light sources such as tungsten halogen lamp, bromine tungsten filament lamps, using the parallel light tube of broad spectrum light source
Unite more optical axises when, the capacity usage ratio of specific wavelength is relatively low, influences the test and calibration of more optical axises.
Different from is required to the light axis consistency between different branch, wherein requiring highest to be that essence tracks optical axis and leads to
The concentricity of letter transmitting optical axis, three axis of communications reception optical axis；Wherein communications reception branch visual field is in differential of the arc measurement level, and communicates hair
The beam divergence angle penetrated is close to the diffraction limit of optical system, and beam divergence angle is also in differential of the arc measurement level, therefore, to essence tracking optical axis with communicate
Emit optical axis, the optical axis alignment precision of communications reception optical axis requires also in differential of the arc measurement level.
The high-precision of multi-light axis consistency is to ensure that long distance laser communication must solve the problems, such as, therefore for more optical axises
The detection of consistency is particularly important.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of based on the more of laser communication system
Light axis consistency test device and method can be applied to the light axis consistency detection of the laser communication system of multi-wavelength.
To achieve the above objectives, in a first aspect, the embodiment of the present invention provides a kind of more optical axises based on laser communication system
Consistency test device, the optical axis that the multi-light axis consistency test device is applied to emit the product to be measured of multiple laser are consistent
Property test, including without focus optical devices, laser beam emitting device, laser receiver, spectroscope, two-dimentional beat mirror and reflection
Mirror；
The laser beam emitting device is for emitting multiple laser；
The no focus optical devices are used to receive the laser of the laser beam emitting device transmitting, after reflecting mirror reflection
The laser of the laser beam emitting device transmitting and the laser with laser beam emitting device transmitting of the product transmitting to be measured
The laser of phase co-wavelength；
The laser receiver is used to receive the laser after reflection and the laser of the product transmitting to be measured, the reflection
Laser and the received laser coaxial of product to be measured afterwards；
The spectroscope, the two dimension are successively equipped between the laser beam emitting device and the no focus optical devices partially
Put mirror；Wherein, multiple laser that the spectroscope is used to emit the laser beam emitting device are split and reach described two
Tie up beat mirror, and for by the laser after the laser of the received product transmitting to be measured of the no focus optical devices, transmitting
It is sent to the laser receiver；It is described two dimension beat mirror for changing laser direction；
The reflecting mirror is set between the no focus optical devices and the product to be measured, for filling the Laser emission
The laser of transmitting is set along backtracking to the laser receiver.
Based on the above technical solution, the multi-light axis consistency test device further include:
Control system is connected with the two-dimentional beat mirror, for controlling the deflection angle of the two-dimentional beat mirror.
Based on the above technical solution, the control system includes:
Computing module is connected with the laser receiver, and the laser for calculating the product transmitting to be measured is formed
Transmitting optical axis, receive deviation between the laser-formed reception optical axis of laser beam emitting device transmitting.
Based on the above technical solution, the laser beam emitting device includes:
VISIBLE LIGHT EMISSION device is used to integrate the visible light of multiple wavelength；The VISIBLE LIGHT EMISSION device includes first
Wavelength division multiplexer, the first collimating mirror being connected with the output end of first wavelength division multiplexer and multiple with first wavelength-division
It is connected with the input terminal of device multiple for emitting the laser of a branch of visible light；
Near infrared light emitter is used to integrate the near infrared light of multiple wavelength；The near infrared light emitter packet
Containing the second wavelength division multiplexer, the second collimating mirror being connected with the output end of second wavelength division multiplexer and with described second
The input terminal of wavelength division multiplexer is connected multiple for emitting the laser of a branch of near infrared light；
Emission spectrum spectroscope is used to separate visible light and near infrared light；The emission spectrum spectroscope is set to described
Between spectroscope and first collimating mirror；The emission spectrum spectroscope be set to the spectroscope and second collimating mirror it
Between.
Based on the above technical solution, the laser receiver includes:
It can be seen that optical receiver apparatus, is used to receive visible light；
Near infrared light reception device is used to receive near infrared light；
Spectrum mirror is received, is set between the spectroscope and the visible optical receiver apparatus, the light splitting is set to
Between mirror and the near infrared light reception device.
Based on the above technical solution, the multi-light axis consistency test device further include:
Control system is connected with the two-dimentional beat mirror, for controlling the deflection angle of the two-dimentional beat mirror；
The control system includes:
Computing module is respectively connected with the visible optical receiver apparatus and the near infrared light reception device；The meter
It calculates module and is used to calculate the transmitting optical axis and receive the laser beam emitting device hair that the visible light that the product to be measured emits is formed
The deviation received between optical axis that the visible light penetrated is formed,
Calculate transmitting optical axis, the reception laser beam emitting device transmitting that the near infrared light of the product transmitting to be measured is formed
Near infrared light formed receive optical axis between deviation,
And it calculates the received visible light of product to be measured miss distance of pick-up probe in the product to be measured and is
What is formed when zero receives between the reception optical axis that optical axis and the near infrared light for receiving the laser beam emitting device transmitting are formed
Deviation.
Second aspect, the embodiment of the present invention also provide a kind of multi-light axis consistency test method, are filled based on above-mentioned test
It sets, the step of multi-light axis consistency test method includes:
Laser beam emitting device emits laser；
The deflection angle of the two-dimentional beat mirror is adjusted to predeterminated position；
The laser of recording laser emitter transmitting is after being reflected by a reflector along backtracking in laser receiver
Facula position；
The laser of product transmitting to be measured and laser beam emitting device transmitting laser phase co-wavelength records product transmitting to be measured
Facula position of the laser in laser receiver.
Based on the above technical solution, when laser beam emitting device emits beam of laser, the laser beam emitting device
Facula position of the laser of transmitting after reflecting mirror reflects along backtracking in laser receiver is denoted as (Xm, Ym), production to be measured
Facula position of the laser of product transmitting in the laser receiver is denoted as (Xn, Yn), the multi-light axis consistency test method
The step of further include:
According to the facula position (X of recordm, Ym) and facula position (Xn, Yn), calculate the laser of the product transmitting to be measured
Deviation θ between the transmitting optical axis of formation and the laser-formed reception optical axis for receiving the laser beam emitting device transmitting, calculates
Formula are as follows:
In formula, Xm、YmRespectively emit cross, the ordinate of the facula position of optical axis, Xn、YnRespectively receive the light of optical axis
Cross, the ordinate of spot position, a are the pixel of laser receiver, and f is the focal length of the laser receiver.
Based on the above technical solution, the regulating step of the predeterminated position are as follows:
It is placed in outside no focus optical devices in product to be measured and detects the laser and the product display magnitude of power to be measured
When, the deflection angle of two-dimentional beat mirror is adjusted, and the prominent two-dimentional beat mirror position of the display for being recorded in the product to be measured
It sets, the two dimension beat mirror position is predeterminated position.
Based on the above technical solution, laser beam emitting device includes VISIBLE LIGHT EMISSION device and near infrared light transmitting dress
It sets, laser receiver includes visible optical receiver apparatus and near infrared light reception device；The multi-light axis consistency test method
The step of specifically include:
The VISIBLE LIGHT EMISSION device and the near infrared light emitter emit a branch of visible light and a branch of close red respectively
Outer light records the visible light and the near infrared light and is reflected respectively through reflecting mirror in the visible optical receiver apparatus and described close
Facula position in infrared optical receiver apparatus；
Product to be measured successively emits the laser with the visible light and the near infrared light phase co-wavelength, records product to be measured
The laser of the transmitting facula position in the visible optical receiver apparatus and the near infrared light reception device respectively；
Product to be measured emits the laser with the visible light phase co-wavelength again, then adjusts the deflection of the two-dimentional beat mirror
Angle miss distance of pick-up probe into the product to be measured is zero, and the record product to be measured described at this time emits again and institute
State facula position of the laser of visible light phase co-wavelength in visible optical receiver apparatus.
Compared with the prior art, the advantages of the present invention are as follows:
A kind of multi-light axis consistency test device and method based on laser communication system of the invention, due to laser communication
System needs remote transmission, thus it is necessary to ground to carry out test verification to its multi-light axis consistency, and optical axis is adjusted
Required precision is also corresponding very high, and two-dimentional beat mirror can realize the adjustment in microradian two-stage；And the light in laser communication has
Multi-wavelength, such as near infrared light, it is seen that light etc., and conventional light axis consistency test device is then unable to satisfy, meanwhile, every class
Light also has certain wave-length coverage, therefore we need a kind of light that can emit multiple wavelength, meet laser communication system
Different-waveband the consistency detection that do not share the same light.
Detailed description of the invention
Fig. 1 shows for the structure of the multi-light axis consistency test device based on laser communication system a kind of in the embodiment of the present invention
It is intended to；
In figure: the first off-axis parabolic mirror of 1-, the second off-axis parabolic mirror of 2-, 3- two dimension beat mirror, 4- points
Light microscopic, 5- receive spectrum mirror, the first collective lens of 6-, 7- visible-light detector, the convergence camera lens of 8- second, 9- near infrared light
Detector, 10- emission spectrum spectroscope, the first collimating mirror of 11-, the first wavelength division multiplexer of 12-, the second collimating mirror of 13-, 14-
Two wavelength division multiplexers, 15- control system, 16- corner cube reflector, the first attenuator of 17-, the second attenuator of 18-, 19- production to be measured
Product.
Specific embodiment
Clear, complete description is carried out below with reference to technical solution of the attached drawing to embodiment each in the present invention, it is clear that institute
The embodiment of description is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention,
Those of ordinary skill in the art's obtained all other embodiment without making creative work belongs to this
Invent protected range.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.It should be pointed out that all attached drawings are illustrative expression.For the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
The present invention is described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
Embodiment
Shown in Figure 1, the embodiment of the present invention provides a kind of multi-light axis consistency test dress based on laser communication system
It sets, the multi-light axis consistency test device is applied to emit the light axis consistency test of the product to be measured 19 of multiple laser, packet
Include no focus optical devices, laser beam emitting device, laser receiver, spectroscope 4, two-dimentional beat mirror 3 and reflecting mirror；
The laser beam emitting device is for emitting multiple laser；
The no focus optical devices are used to receive the laser of the laser beam emitting device transmitting, after reflecting mirror reflection
The laser of the laser beam emitting device transmitting and swashing with what the laser beam emitting device emitted for the product to be measured 19 transmitting
The laser of light phase co-wavelength；
The laser receiver is used to receive the laser after reflection and the laser of the product to be measured 19 transmitting, described anti-
Laser and the received laser coaxial of the product 19 to be measured after penetrating；
The spectroscope 4, the two dimension are successively equipped between the laser beam emitting device and the no focus optical devices
Beat mirror 3；Wherein, multiple laser that the spectroscope 4 is used to emit the laser beam emitting device are split and reach institute
State two-dimentional beat mirror 3, and laser for emitting the no received product 19 to be measured of focus optical devices, after transmitting
Laser be sent to the laser receiver；Specifically, the spectroscope 4 is spectrum mirror 4；The two dimension beat mirror 3
For changing the direction of laser；
The reflecting mirror is set between the no focus optical devices and the product to be measured 19, is used for the Laser emission
The laser of device transmitting is along backtracking to the laser receiver.
A kind of multi-light axis consistency test device and method based on laser communication system of the invention, due to laser communication
System needs remote transmission, thus it is necessary to ground to carry out test verification to its multi-light axis consistency, and optical axis is adjusted
Required precision is also corresponding very high, and two dimension two dimension beat mirror 3 can realize the adjustment in microradian two-stage；And the light in laser communication
With multi-wavelength, such as near infrared light, it is seen that light etc., and conventional light axis consistency test device is then unable to satisfy, meanwhile,
Every class light also has certain wave-length coverage, therefore we need a kind of light that can emit multiple wavelength, meet laser communication
The consistency detection that do not share the same light of the different-waveband of system.
Specifically, the no focus optical devices are by the first off-axis parabolic mirror 1 and the second off-axis parabolic mirror 2
Composition, second off-axis parabolic mirror 2 are oppositely arranged with the two-dimentional beat mirror 3 for transmitting laser.
As a kind of preferred embodiment of the present embodiment, the multi-light axis consistency test device further includes control system 15,
It is connected with the two-dimentional beat mirror 3, for controlling the deflection angle of the two-dimentional beat mirror 3 and can be realized microradian two-stage
On adjustment, improve the measurement accuracy of light axis consistency.
Further, the control system 15 includes computing module, is connected with the laser receiver, for calculating
Laser-formed the connecing of laser-formed transmitting optical axis, the reception laser beam emitting device transmitting that the product to be measured 19 emits
Receive the deviation between optical axis.Using the computing module in control system 15 to the transmitting optical axis of product 19 to be measured and receive optical axis it
Between deviation handled, calculated compared to artificial, it is convenient and efficient, efficiency is significant.
As one embodiment of the present invention, the laser beam emitting device includes VISIBLE LIGHT EMISSION device, near infrared light
Emitter and emission spectrum spectroscope 10；VISIBLE LIGHT EMISSION device is used to integrate the visible light of multiple wavelength, includes first wave
Division multiplexer 12, the first collimating mirror 11 being connected with the output end of first wavelength division multiplexer 12 and with the first wave
The input terminal of division multiplexer 12 is connected multiple for emitting the laser of a branch of visible light；Near infrared light emitter is for collecting
At the near infrared light of multiple wavelength, it is connected comprising the second wavelength division multiplexer 14, with the output end of second wavelength division multiplexer 14
The second collimating mirror 13 and be connected with the input terminal of second wavelength division multiplexer 14 multiple for emitting a branch of near-infrared
The laser of light；For separating visible light and near infrared light, the emission spectrum spectroscope 10 is set to emission spectrum spectroscope 10
Between the spectroscope 4 and first collimating mirror 11；The emission spectrum spectroscope 10 is set to the spectroscope 4 and described the
Between two collimating mirrors 13；Specifically, the emission spectrum spectroscope 10 and first collimating mirror 11, second collimating mirror 13
It is connected.
Further, the laser receiver includes for receiving the visible optical receiver apparatus of visible light, for connecing
It receives the near infrared light reception device of near infrared light and receives spectrum mirror 5；The reception spectrum mirror 5 is set to the light splitting
Between mirror 4 and the visible optical receiver apparatus, it is set between the spectroscope 4 and the near infrared light reception device.It is described can
Light-exposed reception device includes visible-light detector 7 and the first collective lens 6 being connected with the visible-light detector 7；It is described close
Infrared optical receiver apparatus includes near infrared light detector 9 and the second convergence camera lens being connected with the near infrared light detector 9；Institute
Reception spectrum mirror 5 is stated to be connected with first collective lens 6, second collective lens 8.
Since visible-light detector 7 is only capable of detecting visible light, near infrared light detector 9 is only capable of detecting near infrared light,
Therefore, two kinds of laser beam emitting devices and corresponding laser receiver are set, and in visible light wave range and near infrared light wave band
Multiple wavelength are respectively provided with, multiple transmitters is designed and is connected on wavelength division multiplexer, then the first wavelength division multiplexer 12 and the second wave
Division multiplexer 14 emits laser and is independent of each other, and realizes the Laser emission of multiple wave bands, while not changing other in test device
Component.
Further, the laser receiver further includes the first attenuator 17 and the second attenuator 18；First decaying
Piece 17 is arranged between first collective lens 6 and the reception spectrum mirror 5；The setting of second attenuator 18 is described the
Between two collective lens 8 and the reception spectrum mirror 5.Suitable attenuator is selected to adapt to the light beam of different-energy, is had
There is very strong engineering practical value.
In embodiments of the present invention, the reflecting mirror is corner cube reflector 16, anti-without mobile pyramid in using operation
Mirror 16 is penetrated, avoids using mobile defect is needed when plane of motion reflecting mirror, simplifies operating process.
Therefore, the control system 15 includes computing module, with the visible optical receiver apparatus and the near infrared light
Reception device is respectively connected with；The computing module is used to calculate the transmitting optical axis that the visible light that the product to be measured 19 emits is formed
And the deviation received between optical axis that the visible light of the laser beam emitting device transmitting is formed is received, calculate the product 19 to be measured
The reception optical axis that the near infrared light of transmitting optical axis, the reception laser beam emitting device transmitting that the near infrared light of transmitting is formed is formed
Between deviation, and calculate the received visible light of the product 19 to be measured in the product 19 to be measured pick-up probe it is de-
The reception light for receiving optical axis and the near infrared light for receiving the laser beam emitting device transmitting and being formed formed when target amount is zero
Deviation between axis.Therefore spectroscope 4 can will be seen that light emitting devices, near infrared light emitter transmitting a branch of visible light and
A branch of near infrared light forms two parallel light beams through spectroscope 4, i.e. the visible light that emits of product 19 to be measured and near infrared light
Receive optical axis be it is coaxial, due to the difference of wavelength, the laser receiver where leading to hot spot forming position is different, therefore
If the received multiple laser of product 19 more to be measured, then, utilize the visible light of product 19 to be measured transmitting or connecing near infrared light
Receiving optical axis can mutually convert；When the miss distance of pick-up probe in the product 19 to be measured is zero, then product to be measured
19 transmitting visible lights the reception optical axis of formation and the reception optical axis of pick-up probe in product 19 to be measured be it is coaxial, therefore
The reception optical axis that the visible light that the product to be measured 19 obtained at this time emits is formed is more accurate, then the production to be measured can be calculated
The reception optical axis and institute that the received visible light of product 19 is formed when the miss distance of pick-up probe is zero in the product 19 to be measured
It states and receives the deviation received between optical axis that the near infrared light of the laser beam emitting device transmitting is formed, provide one group of new ginseng
Processing of the number for optical axis deviation, further increases its measurement accuracy.
The working principle of the embodiment of the present invention are as follows: the laser transmitting for emitting a branch of visible light is a branch of visible
Light, is set to beacon beam, successively passes through the first wavelength division multiplexer 12, the first collimating mirror 11, emission spectrum spectroscope 10, divides
Light microscopic 4, two-dimentional beat mirror 3, the second off-axis parabolic mirror 2, the first off-axis parabolic mirror 1 are launched so as to be measured
When product 19 detects beacon beam and the product to be measured 19 display magnitude of power, the deflection angle of two-dimentional beat mirror 3 is adjusted, and
It is recorded in prominent two-dimentional 3 position of beat mirror of display of the product to be measured 19,3 position of two dimension beat mirror is default
Position；The deflection angle of the two-dimentional beat mirror 3 is adjusted to predeterminated position, is closed described for emitting the laser of a branch of visible light
Device；
The laser for emitting a branch of visible light emits a branch of visible light, described for emitting a branch of near infrared light
Laser emit a branch of near infrared light, in the embodiment of the present invention, the visible light of transmitting is beacon beam, transmitting it is described close
Infrared light is Communication ray, and the beacon beam forms two parallel beacon beams and Communication ray through spectroscope 4 with the Communication ray, and
The transmitting of this two-beam is mutually independent of each other, will be to by the corner cube reflector 16 between non-focus optical system and product to be measured 19
Beacon beam and Communication ray that product 19 receives is surveyed to visit along backtracking, and by reflexing to visible light when spectroscope 4 respectively
It surveys on device 7 and near infrared light detector 9, the visible light recorded on the visible-light detector 7 and near infrared light detector 9
With the facula position (X of near infrared light1, Y1) and (X2, Y2), it closes described for emitting the laser of a branch of visible light；Production to be measured
Product 19 successively emit the laser of the beacon beam and Communication ray phase co-wavelength, in the visible-light detector 7 and near infrared light
The facula position recorded on detector 9 is (X3, Y3) and (X4, Y4), close the laser emitter of product 19 to be measured；Product to be measured
19 emit again with the laser of the beacon beam phase co-wavelength, adjust the deflection angle of the two dimension beat mirror 3 again to described
The miss distance of pick-up probe is zero in product 19 to be measured, and records the facula position (X in visible optical receiver apparatus at this time5,
Y5)；Then deviation processing calculating is carried out to facula position using the computing module in control device.
According to above-mentioned steps, the transmitting optical axis and receive institute that the visible light that the product 19 to be measured emits is formed are calculated
State the deviation received between optical axis that the visible light of laser beam emitting device transmitting is formed are as follows:
Calculate transmitting optical axis, the reception laser beam emitting device hair that the near infrared light that the product to be measured 19 emits is formed
The deviation received between optical axis that the near infrared light penetrated is formed are as follows:
Calculating the received visible light of the product to be measured 19 miss distance of pick-up probe in the product 19 to be measured is
What is formed when zero receives between the reception optical axis that optical axis and the near infrared light for receiving the laser beam emitting device transmitting are formed
Deviation are as follows:
In formula, a1For 7 pixel of visible-light detector, a2For 9 pixel of near infrared light detector, f1For visible optical receiver apparatus
Focal length, f2For the focal length of near infrared light reception device, X1、Y1Respectively the received visible light of the product to be measured 19 is formed
Receive cross, the ordinate of the facula position of optical axis, X2、Y2What respectively the received near infrared light of the product to be measured 19 was formed connects
Receive cross, the ordinate of the facula position of optical axis, X3、Y3The transmitting light that the visible light that the respectively described product to be measured 19 emits is formed
Cross, the ordinate of the facula position of axis, X4、Y4The transmitting optical axis that the near infrared light that the respectively described product to be measured 19 emits is formed
Facula position cross, ordinate, X5、Y5Respectively the received visible light of the product to be measured 19 is in the product 19 to be measured
Cross, the ordinate of the facula position of the reception optical axis formed when the miss distance of pick-up probe is zero.
Second aspect, the embodiment of the present invention also provide a kind of multi-light axis consistency test method, are filled based on above-mentioned test
It sets, the step of multi-light axis consistency test method includes:
Laser beam emitting device emits laser；
The deflection angle of the two-dimentional beat mirror 3 is adjusted to predeterminated position；
The laser of recording laser emitter transmitting is after being reflected by a reflector along backtracking in laser receiver
Facula position；
The laser of the transmitting of product 19 to be measured and laser beam emitting device transmitting laser phase co-wavelength, records product 19 to be measured
Facula position of the laser of transmitting in laser receiver.
Further, when laser beam emitting device emits beam of laser, the laser of the laser beam emitting device transmitting is through anti-
It penetrates after mirror reflection and is denoted as (X along facula position of the backtracking in laser receiverm, Ym), the laser that product 19 to be measured emits
Facula position in the laser receiver is denoted as (Xn, Yn), the step of multi-light axis consistency test method, also wraps
It includes:
According to the facula position (X of recordm, Ym) and facula position (Xn, Yn), calculate swashing for the transmitting of product 19 to be measured
What light was formed emits the inclined of the deviation between optical axis and the laser-formed reception optical axis for receiving the laser beam emitting device transmitting
Poor θ, calculation formula are as follows:
In formula, Xm、YmRespectively emit cross, the ordinate of the facula position of optical axis, Xn、YnRespectively receive the light of optical axis
Cross, the ordinate of spot position, a are the pixel of laser receiver, and f is the focal length of the laser receiver.
Further, the regulating step of the predeterminated position are as follows:
It is placed in outside no focus optical devices in product 19 to be measured and detects the laser and the product to be measured 19 display power
When numerical value, the deflection angle of two-dimentional beat mirror 3 is adjusted, and the prominent two dimension of display for being recorded in the product to be measured 19 is partially
3 position of mirror is put, 3 position of two dimension beat mirror is predeterminated position.
As a kind of preferred embodiment of the embodiment of the present invention, laser beam emitting device includes VISIBLE LIGHT EMISSION device and near-infrared
Light emitting devices, laser receiver include visible optical receiver apparatus and near infrared light reception device；The multi-light axis consistency
The step of test method, specifically includes:
The VISIBLE LIGHT EMISSION device and the near infrared light emitter emit a branch of visible light and a branch of close red respectively
Outer light records the visible light and the near infrared light and is reflected respectively through reflecting mirror in the visible optical receiver apparatus and described close
Facula position in infrared optical receiver apparatus；
Product 19 to be measured successively emits the laser with the visible light and the near infrared light phase co-wavelength, records production to be measured
The laser facula position in the visible optical receiver apparatus and the near infrared light reception device respectively that product 19 emit；
Product 19 to be measured emits the laser with the visible light phase co-wavelength again, then adjusts the two-dimentional beat mirror 3
Deflection angle miss distance of pick-up probe into the product 19 to be measured is zero, and records the product 19 to be measured described at this time again
Emit the facula position with the laser of the visible light phase co-wavelength in visible optical receiver apparatus.
Illustrate in particular embodiments below:
The laser for emitting a branch of visible light emits a branch of visible light, is set to beacon beam, successively passes through
It is off-axis to cross the first wavelength division multiplexer 12, the first collimating mirror 11, emission spectrum spectroscope 10, spectroscope 4, two-dimentional beat mirror 3, second
Parabolic mirror 2, the first off-axis parabolic mirror 1 launch so that product to be measured 19 detect beacon beam and it is described to
When surveying the display magnitude of power of product 19, the deflection angle of two-dimentional beat mirror 3 is adjusted, and is recorded in the display of the product to be measured 19
Prominent 3 position of two dimension beat mirror, 3 position of two dimension beat mirror is predeterminated position；Adjust the two-dimentional beat mirror 3
Deflection angle is closed described for emitting the laser of a branch of visible light to predeterminated position；
The laser for emitting a branch of visible light emits a branch of visible light, described for emitting a branch of near infrared light
Laser emit a branch of near infrared light, in the embodiment of the present invention, the visible light of transmitting is beacon beam, transmitting it is described close
Infrared light is Communication ray, and the beacon beam forms two parallel beacon beams and Communication ray through spectroscope 4 with the Communication ray, and
The transmitting of this two-beam is mutually independent of each other, will be to by the corner cube reflector 16 between non-focus optical system and product to be measured 19
Beacon beam and Communication ray that product 19 receives is surveyed to visit along backtracking, and by reflexing to visible light when spectroscope 4 respectively
It surveys on device 7 and near infrared light detector 9, the visible light recorded on the visible-light detector 7 and near infrared light detector 9
With the facula position (X of near infrared light1, Y1) and (X2, Y2), it closes described for emitting the laser of a branch of visible light；Production to be measured
Product 19 successively emit the laser of the beacon beam and Communication ray phase co-wavelength, in the visible-light detector 7 and near infrared light
The facula position recorded on detector 9 is (X3, Y3) and (X4, Y4), close the laser emitter of product 19 to be measured；Product to be measured
19 emit again with the laser of the beacon beam phase co-wavelength, adjust the deflection angle of the two dimension beat mirror 3 again to described
The miss distance of pick-up probe is zero in product 19 to be measured, and records the facula position (X in visible optical receiver apparatus at this time5,
Y5)；Then deviation processing calculating is carried out to facula position using the computing module in control device.
According to above-mentioned steps, the transmitting optical axis and receive institute that the visible light that the product 19 to be measured emits is formed are calculated
State the deviation received between optical axis that the visible light of laser beam emitting device transmitting is formed are as follows:
Calculate transmitting optical axis, the reception laser beam emitting device hair that the near infrared light that the product to be measured 19 emits is formed
The deviation received between optical axis that the near infrared light penetrated is formed are as follows:
Calculating the received visible light of the product to be measured 19 miss distance of pick-up probe in the product 19 to be measured is
What is formed when zero receives between the reception optical axis that optical axis and the near infrared light for receiving the laser beam emitting device transmitting are formed
Deviation are as follows:
In formula, a1For 7 pixel of visible-light detector, a2For 9 pixel of near infrared light detector, f1For visible optical receiver apparatus
Focal length, f2For the focal length of near infrared light reception device, X1、Y1Respectively the received visible light of the product to be measured 19 is formed
Receive cross, the ordinate of the facula position of optical axis, X2、Y2What respectively the received near infrared light of the product to be measured 19 was formed connects
Receive cross, the ordinate of the facula position of optical axis, X3、Y3The transmitting light that the visible light that the respectively described product to be measured 19 emits is formed
Cross, the ordinate of the facula position of axis, X4、Y4The transmitting optical axis that the near infrared light that the respectively described product to be measured 19 emits is formed
Facula position cross, ordinate, X5、Y5Respectively the received visible light of the product to be measured 19 is in the product 19 to be measured
Cross, the ordinate of the facula position of the reception optical axis formed when the miss distance of pick-up probe is zero.
The method provided according to embodiments of the present invention can obtain the deviation between multiple optical axises of product 19 to be measured, i.e.,
Angle between multiple optical axises；Measurement accuracy can also be improved in such a way that multiple measurement is averaged, and facula position passes through
Facula mass center method obtains, and can improve facula mass center positioning accuracy to 0.2 pixel accuracy.
A kind of multi-light axis consistency test method based on laser communication system provided in an embodiment of the present invention, due to laser
Communication system needs remote transmission, thus it is necessary to ground to carry out test verification to its multi-light axis consistency, for optical axis tune
The required precision of section is also corresponding very high, and two-dimentional beat mirror 3 can realize the adjustment in microradian two-stage；And the light in laser communication
With multi-wavelength, such as near infrared light, it is seen that light etc., and conventional light axis consistency test device is then unable to satisfy, meanwhile,
Every class light also has certain wave-length coverage, therefore we need a kind of light that can emit multiple wavelength, meet laser communication
The consistency detection that do not share the same light of the different-waveband of system.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of multi-light axis consistency test device based on laser communication system, which is characterized in that the multi-light axis consistency
Test device is applied to emit the light axis consistency test of the product to be measured of multiple laser, including sends out without focus optical devices, laser
Injection device, laser receiver, spectroscope, two-dimentional beat mirror and reflecting mirror；
The laser beam emitting device is for emitting multiple laser；
The no focus optical devices are used to receive the laser, described after reflecting mirror reflection of laser beam emitting device transmitting
The laser of laser beam emitting device transmitting and the laser of the product transmitting to be measured emitted with the laser beam emitting device are identical
The laser of wavelength；
The laser receiver is used to receive the laser after reflection and the laser of the product transmitting to be measured, after the reflection
Laser and the received laser coaxial of product to be measured；
The spectroscope, the two-dimentional beat are successively equipped between the laser beam emitting device and the no focus optical devices
Mirror；Wherein, multiple laser that the spectroscope is used to emit the laser beam emitting device are split and reach the two dimension
Beat mirror, and for by the laser after the laser of the received product transmitting to be measured of the no focus optical devices, transmitting
It send to the laser receiver；It is described two dimension beat mirror for changing laser direction；
The reflecting mirror is set between the no focus optical devices and the product to be measured, for sending out the laser beam emitting device
The laser penetrated is along backtracking to the laser receiver.
2. the multi-light axis consistency test device according to claim 1 based on laser communication system, which is characterized in that institute
State multi-light axis consistency test device further include:
Control system is connected with the two-dimentional beat mirror, for controlling the deflection angle of the two-dimentional beat mirror.
3. the multi-light axis consistency test device according to claim 2 based on laser communication system, which is characterized in that institute
Stating control system includes:
Computing module is connected with the laser receiver, for calculating the laser-formed hair of the product transmitting to be measured
It penetrates optical axis, receive the deviation between the laser-formed reception optical axis of the laser beam emitting device transmitting.
4. the multi-light axis consistency test device according to claim 1 based on laser communication system, which is characterized in that institute
Stating laser beam emitting device includes:
VISIBLE LIGHT EMISSION device is used to integrate the visible light of multiple wavelength；The VISIBLE LIGHT EMISSION device includes the first wavelength-division
Multiplexer, the first collimating mirror being connected with the output end of first wavelength division multiplexer and with first wavelength division multiplexer
Input terminal be connected it is multiple for emitting the lasers of a branch of visible light；
Near infrared light emitter is used to integrate the near infrared light of multiple wavelength；The near infrared light emitter includes the
Two wavelength division multiplexers, the second collimating mirror being connected with the output end of second wavelength division multiplexer and with second wavelength-division
The input terminal of multiplexer is connected multiple for emitting the laser of a branch of near infrared light；
Emission spectrum spectroscope is used to separate visible light and near infrared light；The emission spectrum spectroscope is set to the light splitting
Between mirror and first collimating mirror；The emission spectrum spectroscope is set between the spectroscope and second collimating mirror.
5. the multi-light axis consistency test device according to claim 4 based on laser communication system, which is characterized in that institute
Stating laser receiver includes:
It can be seen that optical receiver apparatus, is used to receive visible light；
Near infrared light reception device is used to receive near infrared light；
Receive spectrum mirror, be set between the spectroscope and the visible optical receiver apparatus, be set to the spectroscope with
Between the near infrared light reception device.
6. the multi-light axis consistency test device according to claim 5 based on laser communication system, which is characterized in that institute
State multi-light axis consistency test device further include:
Control system is connected with the two-dimentional beat mirror, for controlling the deflection angle of the two-dimentional beat mirror；
The control system includes:
Computing module is respectively connected with the visible optical receiver apparatus and the near infrared light reception device；The calculating mould
The transmitting optical axis and receive the laser beam emitting device transmitting that the visible light that block is used to calculate the product transmitting to be measured is formed
The deviation received between optical axis that visible light is formed,
It calculates the transmitting optical axis of the near infrared light formation of the product transmitting to be measured, receive the close of the laser beam emitting device transmitting
The deviation received between optical axis that infrared light is formed,
And when calculating the received visible light of product to be measured the miss distance of pick-up probe being zero in the product to be measured
Receiving for formation is inclined between the reception optical axis that optical axis and the near infrared light for receiving the laser beam emitting device transmitting are formed
Difference.
7. a kind of multi-light axis consistency test method is based on test device described in claim 1, which is characterized in that described more
The step of light axis consistency test method includes:
Laser beam emitting device emits laser；
The deflection angle of the two-dimentional beat mirror is adjusted to predeterminated position；
Light of the laser of recording laser emitter transmitting after being reflected by a reflector along backtracking in laser receiver
Spot position；
The laser of product transmitting to be measured and laser beam emitting device transmitting laser phase co-wavelength, records swashing for product transmitting to be measured
Facula position of the light in laser receiver.
8. multi-light axis consistency test method according to claim 7, which is characterized in that when laser beam emitting device emits one
When Shu Jiguang, the laser of the laser beam emitting device transmitting is after reflecting mirror reflects along backtracking in laser receiver
Facula position is denoted as (Xm, Ym), facula position of the laser of product to be measured transmitting in the laser receiver be denoted as (Xn,
Yn), the step of multi-light axis consistency test method further include:
According to the facula position (Xm, Ym) and facula position (Xn, Yn) of record, the laser for calculating the product transmitting to be measured is formed
Transmitting optical axis and receive laser beam emitting device transmitting laser-formed reception optical axis between deviation θ, calculation formula
Are as follows:
In formula, Xm, Ym are respectively cross, the ordinate for emitting the facula position of optical axis, and Xn, Yn are respectively the hot spot position for receiving optical axis
Cross, the ordinate set, a are the pixel of laser receiver, and f is the focal length of the laser receiver.
9. multi-light axis consistency test method according to claim 7, which is characterized in that the adjusting of the predeterminated position walks
Suddenly are as follows:
When product to be measured is placed in outside no focus optical devices and detects the laser and the product display magnitude of power to be measured, adjust
The deflection angle of two-dimentional beat mirror is saved, and the prominent two-dimentional beat mirror position of the display for being recorded in the product to be measured, institute
Stating two-dimentional beat mirror position is predeterminated position.
10. multi-light axis consistency test method according to claim 7, which is characterized in that
Laser beam emitting device includes VISIBLE LIGHT EMISSION device and near infrared light emitter, and laser receiver includes that visible light connects
Receiving apparatus and near infrared light reception device；The step of multi-light axis consistency test method, specifically includes:
The VISIBLE LIGHT EMISSION device and the near infrared light emitter emit a branch of visible light and a branch of near infrared light respectively,
The visible light and the near infrared light is recorded to be reflected respectively through reflecting mirror in the visible optical receiver apparatus and the near-infrared
Facula position in optical receiver apparatus；
Product to be measured successively emits the laser with the visible light and the near infrared light phase co-wavelength, records product transmitting to be measured
The laser facula position in the visible optical receiver apparatus and the near infrared light reception device respectively；
Product to be measured emits the laser with the visible light phase co-wavelength again, then adjusts the deflection angle of the two-dimentional beat mirror
Miss distance to pick-up probe in the product to be measured is zero, and record the product to be measured described at this time emit again and it is described can
Facula position of the laser of light-exposed phase co-wavelength in visible optical receiver apparatus.
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