CN109708853A - A kind of integral transmitance of infrared transmittivity piece determines method - Google Patents
A kind of integral transmitance of infrared transmittivity piece determines method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 35
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- 230000005457 Black-body radiation Effects 0.000 claims description 71
- 230000005855 radiation Effects 0.000 claims description 32
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- 230000000149 penetrating effect Effects 0.000 claims description 5
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- 230000005540 biological transmission Effects 0.000 description 2
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Abstract
The integral transmitance that the present invention discloses a kind of infrared transmittivity piece determines method.By using transmitance piece, black matrix, thermal imaging system, sun visor device detection, the temperature value of the thermal imaging system at four moment is read by different methods, by each point temperature transition of thermal imaging system real-time display at radiant exitance value, the integral transmitance of transmitance piece is determined by radiant exitance value.Method measurement of the invention is accurate, easy, it can be achieved that the quickly measurement of accurate transmitance, and optical element is few in optical path, and small by external interference, measurement method is easy.
Description
Technical field
The present invention relates to optical target sounding fields, determine more particularly to a kind of integral transmitance of infrared transmittivity piece
Method.
Background technique
Optical material is widely used in modern military target-detection unit, especially photoelectricity weapon aiming and detection system
The application of system mid-infrared light material is especially extensive, and wherein infrared transmittivity is optical material outstanding properties, needs accurately to mark
It is fixed just to can be used.Infrared transmittivity piece is as the calibration device for testing other optical material transmitances, from being worked into production procedure
In, transmitance is saved with its calibration of dispatching from the factory there are certain error or transmitance piece for a long time incomplete causes transmitance to have
Changed, such as continues to use such transmitance piece as standard and carry out other experiment tests, can experimental error be increased, it can not
It leans on.Therefore, this is particularly important accurate and effective, convenient calibration transmitance piece transmitance.
The method of usually measurement infrared transmittivity mainly has following 3 kinds:
A) it is detected using infrared spectrophotometer；
B) it is detected using several related wave band of laser transmitters, receiver；
C) it is detected using Fourier Transform Infrared Spectrometer.
Wherein a method, using the system of infrared spectrophotometer measurement transmitance, precision and light comb position in system
Repeatability and optical system are related with electricity system working condition, in use, often due to by operating condition etc.
It influences, and fails in optimum Working.It is mostly generally the linear and repeated of measurement transmitance to the inspection of instrument performance,
And it is less to the measurement of its precision.Monochromatic light road spectrophotometer Transmissivity measurement the measuring precision is lower, and double light path is divided light
Degree meter Transmissivity measurement system, the measurement accuracy of measurement result is higher than monochromatic light road measurement method, but its optical path is compared with single beam light
Road is complicated, and optical element is more in optical path, and the order of reflection of light transmits often, and the uncertainty of measurement of introducing is also more.
Wherein b method, the screening capacity that laser measurement transmitance is relatively adapted to visible light to 1.06 μm are tested, this is
Because the spectrum between 0.4~1.06 μm is relatively narrow, and laser emitter between is more, and when test is easier reality
It is existing, can substantially represent 0.4~1.06 μm of screening capacity, and only have at present between 3~5 μm, 8~14 μm 3.8 μm and
10.6 μm of laser emitters because 3~5 μm, 8~14 μm of band spectrum it is very wide, be difficult to represent the practical masking energy of infrared smoke screen
Power, so being difficult to detect full wave infrared transmittivity.
Wherein c method, in the natural environment, the state of various organic materials or inorganic matter itself are different.Solid object
Matter is penetrated due to being difficult by infrared light, and many solid matters are difficult to be detected with infrared spectroscopy.Sometimes in order to measure
The infrared spectroscopy of solid matter makes it become gaseous state, so by heating to solid matter by way of increasing temperature high pressure
Its infrared spectroscopy is measured afterwards.Which substantially increases the complexity of detection device and costs.
Summary of the invention
The object of the present invention is to provide a kind of integral transmitances of infrared transmittivity piece to determine method, can be realized to transmission
Rate quickly accurately measures.
To achieve the above object, the present invention provides following schemes:
A kind of integral transmitance of infrared transmittivity piece determines that method, the determining method are applied to infrared transmittivity piece
Transmitance determining device is integrated, described device includes the thermal imaging system set gradually, through filter disc, barn door and black matrix, the side
Method includes:
The thermal imaging system, the transmitance piece, the barn door and the black matrix are placed in darkroom and carry out constant temperature processing；
The lens cap of the thermal imaging system is covered, the temperature value that the first moment thermal imaging system is shown is read；
The black matrix is located at the front set distance of the thermal imaging system by the lens cap for opening the thermal imaging system, reads
The temperature value for taking the second moment thermal imaging system to show；
The black matrix is covered with the barn door, before the transmitance piece is packed into the thermal imaging system camera lens, reads third
The temperature value that moment thermal imaging system is shown；
The barn door is removed, the transmitance piece remains stationary, and reads the temperature value that the 4th moment thermal imaging system is shown；
Temperature value that temperature value, the second moment thermal imaging system shown according to the first moment thermal imaging system is shown, third moment heat
The temperature value that the temperature value and the 4th moment thermal imaging system shown as instrument is shown determines corresponding first moment black body radiation emittance
Value, the second moment black body radiation outgoing angle value, third moment black body radiation outgoing angle value and the 4th moment black body radiation emittance
Value；
Angle value, the second moment black body radiation outgoing angle value, described the are emitted according to the first moment black body radiation
Three moment black body radiations are emitted angle value and the 4th moment black body radiation is emitted angle value, determine the transmitance for penetrating filter disc.
Optionally, in the lens cap for covering the thermal imaging system, obtain temperature value that the first moment thermal imaging system is shown it
Before further include:
The thermal imaging system of constant temperature processing and the black matrix are booted up into preheating.
Optionally, the thermal imaging system, the transmitance piece, the barn door and the black matrix are placed at the constant temperature of darkroom
Reason, specifically includes:
The thermal imaging system, the transmitance piece, the barn door and the black matrix are placed in darkroom constant temperature processing at least two
A hour.
Optionally, described that the thermal imaging system of constant temperature processing and the black matrix are booted up into preheating, it specifically includes:
The thermal imaging system of constant temperature processing and the black matrix are booted up and be preheated to not a half hour, after the black matrix preheating
Temperature be greater than 30 DEG C~50 DEG C of darkroom temperature.
Optionally, the lens cap for covering the thermal imaging system reads the temperature value that the first moment thermal imaging system is shown, specifically
Include:
When the thermal imaging system opening time is reached setting value, the lens cap of the thermal imaging system is covered, the thermal imaging system connects
The environmental radiation in darkroom is received, the temperature value that the first moment thermal imaging system is shown is read.
Optionally, the lens cap for opening the thermal imaging system, the black matrix is located at immediately ahead of the thermal imaging system and is set
At set a distance, the temperature value that the second moment thermal imaging system is shown is read, is specifically included:
The black matrix is located at one meter of the front of the thermal imaging system, the heat by the lens cap for opening the thermal imaging system
The black body radiation that the environmental radiation and the black matrix in darkroom are received as instrument reads the temperature value that the second moment thermal imaging system is shown.
Optionally, described to cover the black matrix with the barn door, the transmitance piece is packed into the thermal imaging system camera lens
Before, the temperature value that third moment thermal imaging system is shown is read, is specifically included:
The black matrix is covered with the barn door, before the transmitance piece is packed into the thermal imaging system camera lens, the thermal imagery
The received radiation of instrument is the radiation of transmitance piece, the radiation that transmitance piece reflects thermal imaging system itself and environment are via transmitance piece
The temperature value that third moment thermal imaging system is shown is read in radiation.
Optionally, described to remove the barn door, the transmitance piece remains stationary, and it is aobvious to read the 4th moment thermal imaging system
The temperature value shown, specifically includes:
The barn door is removed, the transmitance piece remains stationary, the thermal imaging system receives be the black matrix with
Radiation of the dark room conditions after the transmitance piece, itself radiation of the transmitance piece and itself spoke for penetrating thermal imaging system
It penetrates, reads the temperature value that the 4th moment thermal imaging system is shown.
Temperature value that optionally, the temperature value shown according to the first moment thermal imaging system, the second moment thermal imaging system are shown,
The temperature value that the temperature value and the 4th moment thermal imaging system that third moment thermal imaging system is shown are shown, determines corresponding first moment black matrix
Radiant exitance value, the second moment black body radiation outgoing angle value, third moment black body radiation outgoing angle value and the 4th moment black matrix
Radiant exitance value, specifically includes:
Temperature value that temperature value, the second moment thermal imaging system shown according to the first moment thermal imaging system is shown, third moment heat
The temperature value that the temperature value and the 4th moment thermal imaging system shown as instrument is shown, using formula M=σ T4Determine corresponding first moment
Black body radiation is emitted angle value, the second moment black body radiation outgoing angle value, third moment black body radiation outgoing angle value and the 4th moment
Black body radiation is emitted angle value；
Wherein, T is the temperature value that different moments thermal imaging system is shown, M is that different moments black body radiation is emitted angle value, and σ is this
Di Fen-Boltzmann constant.
Optionally, described that angle value, the second moment black body radiation outgoing are emitted according to the first moment black body radiation
Angle value, third moment black body radiation outgoing angle value and the 4th moment black body radiation are emitted angle value, determine and penetrate filter disc
Transmitance, specifically include:
Angle value, the second moment black body radiation outgoing angle value, described the are emitted according to the first moment black body radiation
Three moment black body radiations are emitted angle value and the 4th moment black body radiation is emitted angle value, using formulaIt determines
Through the transmitance of filter disc；
Wherein, τ is the transmitance through filter disc, MsAngle value, M are emitted for the first moment black body radiationhFor the second moment black matrix
Radiant exitance value, MpAngle value, M are emitted for third moment black body radiationτAngle value is emitted for the 4th moment black body radiation.
The specific embodiment provided according to the present invention, the invention discloses following technical effects: the present invention provides a kind of red
The integral transmitance of outer transmitance piece determines method, is detected by using transmitance piece, black matrix, thermal imaging system, sun visor device, black
The infra-red radiation that body issues is received via transmitance piece by thermal imaging system, and thermal imaging system real-time display image kelvin rating passes through generation
Enter the derivation of equation, transmitance piece can be calculated whereby by each point temperature transition of thermal imaging system real-time display at radiant exitance
Integrate transmitance.Method measurement of the invention is accurate, easy, it can be achieved that the quickly measurement of accurate transmitance, optics in optical path
Element is few, small by external interference, and measurement method is easy.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is that the integral transmitance of infrared transmittivity of embodiment of the present invention piece determines method flow diagram；
Fig. 2 is that the temperature value that the first moment of embodiment of the present invention thermal imaging system is shown obtains schematic diagram；
Fig. 3 is that the temperature value that the second moment of embodiment of the present invention thermal imaging system is shown obtains schematic diagram；
Fig. 4 is that the temperature value that third of embodiment of the present invention moment thermal imaging system is shown obtains schematic diagram；
Fig. 5 is that the temperature value that the 4th moment thermal imaging system of the embodiment of the present invention is shown obtains schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of integral transmitances of infrared transmittivity piece to determine method, can be realized to transmission
Rate quickly accurately measures.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is that the integral transmitance of infrared transmittivity of embodiment of the present invention piece determines method flow diagram.As shown in Figure 1, one
The integral transmitance of kind infrared transmittivity piece determines that method, the determining method are applied to the integral transmitance of infrared transmittivity piece
Determining device, described device include the thermal imaging system set gradually, through filter disc, barn door and black matrix, and black matrix is the source of infrared radiation,
Thermal imaging system is infrared receiving device, which comprises
Step 101: the thermal imaging system, the transmitance piece, the barn door and the black matrix being placed in darkroom and carry out perseverance
Temperature processing；
Step 102: covering the lens cap of the thermal imaging system, read the temperature value that the first moment thermal imaging system is shown；
Step 103: open the lens cap of the thermal imaging system, by the black matrix be located at the thermal imaging system front setting away from
From place, the temperature value that the second moment thermal imaging system is shown is read；
Step 104: the black matrix is covered with the barn door, before the transmitance piece is packed into the thermal imaging system camera lens,
Read the temperature value that third moment thermal imaging system is shown；
Step 105: the barn door being removed, the transmitance piece remains stationary, and reads the 4th moment thermal imaging system and shows
Temperature value；
Step 106: temperature value that temperature value, the second moment thermal imaging system shown according to the first moment thermal imaging system is shown,
The temperature value that the temperature value and the 4th moment thermal imaging system that three moment thermal imaging systems are shown are shown determines corresponding first moment black matrix spoke
Angle value, the second moment black body radiation outgoing angle value, third moment black body radiation outgoing angle value and the 4th moment black matrix spoke are penetrated in injection
Angle value is penetrated in injection；
Step 107: angle value, the second moment black body radiation emittance are emitted according to the first moment black body radiation
Value, third moment black body radiation outgoing angle value and the 4th moment black body radiation are emitted angle value, determine through filter disc
Transmitance.
It should also be carried out before step 102:
The thermal imaging system of constant temperature processing and the black matrix are booted up into preheating；Specifically, by described in constant temperature processing
Thermal imaging system and the black matrix, which boot up, is preheated to not a half hour, the temperature after black matrix preheating be greater than 30 DEG C of darkroom temperature~
50℃.Thermal imaging system, black matrix booting are to wait thermal imaging system itself to produce heat dissipation balancing enough for a long time, and blackbody temperature is stablized, and protects
The accurate of subsequent measurement is demonstrate,proved, is not interfered by instrument itself.Blackbody temperature should be greater than 30 DEG C~50 DEG C of room temperature, and thermal imaging system feature will connect
Raying is converted into thermal map, and black body radiation is greater than 30 DEG C~50 DEG C of background ambient temperature, it is ensured that thermal imaging system shows that image clearly is steady
It is fixed, it is distinguished with background.
Step 101, it specifically includes:
The thermal imaging system, the transmitance piece, the barn door and the black matrix are placed in darkroom constant temperature processing at least two
A hour.By the way that test equipment is put into constant temperature darkroom enough long-times, extraneous infra-red radiation consumption, guarantee test result
It is accurate interference-free.
Step 102, it specifically includes:
When the thermal imaging system opening time is reached setting value, the lens cap of the thermal imaging system is covered, the thermal imaging system connects
The environmental radiation in darkroom is received, the temperature value that the first moment thermal imaging system is shown is read.Fig. 2 is the first moment of embodiment of the present invention heat
The temperature value shown as instrument obtains schematic diagram.Symbol 1 is thermal imaging system in Fig. 2, and 11 be lens cap.
Step 103, it specifically includes:
The black matrix is located at one meter of the front of the thermal imaging system, the heat by the lens cap for opening the thermal imaging system
The black body radiation that the environmental radiation and the black matrix in darkroom are received as instrument reads the temperature value that the second moment thermal imaging system is shown.
Fig. 3 is that the temperature value that the second moment of embodiment of the present invention thermal imaging system is shown obtains schematic diagram.Symbol 1 is thermal imaging system in Fig. 3, and 4 are
Black matrix.
Step 104, it specifically includes:
The black matrix is covered with the barn door, before the transmitance piece is packed into the thermal imaging system camera lens, the thermal imagery
The received radiation of instrument is the radiation of transmitance piece, the radiation that transmitance piece reflects thermal imaging system itself and environment are via transmitance piece
The temperature value that third moment thermal imaging system is shown is read in radiation.It in this step, is tight between transmitance piece and thermal imaging system camera lens
Patch screws, so environmental radiation is not present between transmitance piece and thermal imaging system camera lens, but exists between transmitance piece and barn door
Environmental radiation, in order to illustrate source radiation so Fig. 4 has adjustment.Fig. 4 is what third of embodiment of the present invention moment thermal imaging system was shown
Temperature value obtains schematic diagram.Symbol 1 is thermal imaging system in Fig. 4, and 2 be transmitance piece, and 3 be barn door, and 4 be black matrix.
Step 105, it specifically includes:
The barn door is removed, the transmitance piece remains stationary, the thermal imaging system receives be the black matrix with
Radiation of the dark room conditions after the transmitance piece, itself radiation of the transmitance piece and itself spoke for penetrating thermal imaging system
It penetrates, reads the temperature value that the 4th moment thermal imaging system is shown.Fig. 5 is the temperature value that the 4th moment thermal imaging system of the embodiment of the present invention is shown
Obtain schematic diagram.Symbol 1 is thermal imaging system in Fig. 5, and 2 be transmitance piece, and 4 be black matrix.
Step 106, it specifically includes:
Temperature value that temperature value, the second moment thermal imaging system shown according to the first moment thermal imaging system is shown, third moment heat
The temperature value that the temperature value and the 4th moment thermal imaging system shown as instrument is shown, using formula M=σ T4Determine corresponding first moment
Black body radiation is emitted angle value, the second moment black body radiation outgoing angle value, third moment black body radiation outgoing angle value and the 4th moment
Black body radiation is emitted angle value；
Wherein, T is the temperature value that different moments thermal imaging system is shown, M is that different moments black body radiation is emitted angle value, and σ is this
Di Fen-Boltzmann constant.
Planck formula:
First radiation constant c1=3.7418 × 10-16(W·m2)
Second radiation constantc2=1.4388 × 10-2(m·K)
Planck formula is integrated in whole wave-length coverages, just obtains the relationship between black body radiation emittance and temperature
(Stefan-Boltzmann law)
Stefan-Boltzmann constant σ=5.6696 × 10-8(W·m-2K-4)
λ1、λ2By survey radiation wavelength band, general 3~5 μm or 8~14 mu m wavebands；
To black body radiation table, (black body radiation table is worked out using planck law and Wien's displacement law, is not made here
Introduce) numerical modeling is carried out, table F (λ T)-λ T relationship formula can be obtained:
F (x)=p1*x^7+p2*x^6+p3*x^5+p4*x^4+p5*x^3+p6*x^2+p7*x+p8
P1=1.003e-26 (8.139e-27,1.193e-26)
P2=-3.801e-22 (- 4.474e-22, -3.128e-22)
P3=5.657e-18 (4.703e-18,6.612e-18)
P4=-4.11e-14 (- 4.798e-14, -3.422e-14)
P5=1.427e-10 (1.161e-10,1.693e-10)
P6=-1.75e-07 (- 2.283e-07, -1.217e-07)
P7=6.829e-05 (1.964e-05,0.0001169)
P8=-0.005424 (- 0.01994,0.009091)
Step 107, it specifically includes:
Angle value, the second moment black body radiation outgoing angle value, described the are emitted according to the first moment black body radiation
Three moment black body radiations are emitted angle value and the 4th moment black body radiation is emitted angle value, using formulaIt determines
Through the transmitance of filter disc；
Wherein, τ is the transmitance through filter disc, MsAngle value, M are emitted for the first moment black body radiationhFor the second moment black matrix
Radiant exitance value, MpAngle value, M are emitted for third moment black body radiationτAngle value is emitted for the 4th moment black body radiation.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of integral transmitance of infrared transmittivity piece determines method, which is characterized in that the determining method is applied to infrared
The integral transmitance determining device of transmitance piece, described device include the thermal imaging system set gradually, through filter disc, barn door and black
Body, which comprises
The thermal imaging system, the transmitance piece, the barn door and the black matrix are placed in darkroom and carry out constant temperature processing；
The lens cap of the thermal imaging system is covered, the temperature value that the first moment thermal imaging system is shown is read；
The black matrix is located at the front set distance of the thermal imaging system by the lens cap for opening the thermal imaging system, reads the
The temperature value that two moment thermal imaging systems are shown；
The black matrix is covered with the barn door, before the transmitance piece is packed into the thermal imaging system camera lens, reads the third moment
The temperature value that thermal imaging system is shown；
The barn door is removed, the transmitance piece remains stationary, and reads the temperature value that the 4th moment thermal imaging system is shown；
Temperature value, the third moment thermal imaging system that temperature value, the second moment thermal imaging system shown according to the first moment thermal imaging system is shown
The temperature value that the temperature value of display and the 4th moment thermal imaging system are shown, determine corresponding first moment black body radiation outgoing angle value,
Second moment black body radiation is emitted angle value, third moment black body radiation outgoing angle value and the 4th moment black body radiation and is emitted angle value；
When being emitted angle value, the second moment black body radiation outgoing angle value, the third according to the first moment black body radiation
It carves black body radiation outgoing angle value and the 4th moment black body radiation is emitted angle value, determine the transmitance for penetrating filter disc.
2. the integral transmitance of infrared transmittivity piece according to claim 1 determines method, which is characterized in that in the lid
The lens cap of the upper thermal imaging system, before obtaining the temperature value that the first moment thermal imaging system is shown further include:
The thermal imaging system of constant temperature processing and the black matrix are booted up into preheating.
3. the integral transmitance of infrared transmittivity piece according to claim 1 determines method, which is characterized in that by the heat
It handles, specifically includes as instrument, the transmitance piece, the barn door and the black matrix are placed in darkroom constant temperature:
It is small that the thermal imaging system, the transmitance piece, the barn door and the black matrix are placed in the processing at least two of darkroom constant temperature
When.
4. the integral transmitance of infrared transmittivity piece according to claim 2 determines method, which is characterized in that it is described will be permanent
The thermal imaging system and the black matrix of temperature processing boot up preheating, specifically include:
The thermal imaging system of constant temperature processing and the black matrix are booted up and be preheated to not a half hour, the temperature after the black matrix preheating
Degree is greater than 30 DEG C~50 DEG C of darkroom temperature.
5. the integral transmitance of infrared transmittivity piece according to claim 1 determines method, which is characterized in that described to cover
The lens cap of the thermal imaging system reads the temperature value that the first moment thermal imaging system is shown, specifically includes:
When the thermal imaging system opening time is reached setting value, the lens cap of the thermal imaging system is covered, the thermal imaging system receives dark
Environmental radiation in room reads the temperature value that the first moment thermal imaging system is shown.
6. the integral transmitance of infrared transmittivity piece according to claim 1 determines method, which is characterized in that the opening
The black matrix is located at the front set distance of the thermal imaging system by the lens cap of the thermal imaging system, reads the second moment heat
The temperature value shown as instrument, specifically includes:
The black matrix is located at one meter of the front of the thermal imaging system, the thermal imaging system by the lens cap for opening the thermal imaging system
The black body radiation for receiving the environmental radiation and the black matrix in darkroom reads the temperature value that the second moment thermal imaging system is shown.
7. the integral transmitance of infrared transmittivity piece according to claim 1 determines method, which is characterized in that described to use institute
It states barn door and covers the black matrix, before the transmitance piece is packed into the thermal imaging system camera lens, it is aobvious to read third moment thermal imaging system
The temperature value shown, specifically includes:
The black matrix is covered with the barn door, before the transmitance piece is packed into the thermal imaging system camera lens, the thermal imaging system is connect
The radiation of receipts is the spoke of the radiation of transmitance piece, the radiation of transmitance piece reflection thermal imaging system itself and environment via transmitance piece
It penetrates, reads the temperature value that third moment thermal imaging system is shown.
8. the integral transmitance of infrared transmittivity piece according to claim 1 determines method, which is characterized in that described by institute
Barn door removal is stated, the transmitance piece remains stationary, and the temperature value that the 4th moment thermal imaging system is shown is read, is specifically included:
The barn door is removed, the transmitance piece remains stationary, and it is the black matrix and darkroom that the thermal imaging system, which receives,
Radiation of the environment after the transmitance piece, itself radiation of the transmitance piece and itself radiating for thermal imaging system is penetrated,
Read the temperature value that the 4th moment thermal imaging system is shown.
9. the integral transmitance of infrared transmittivity piece according to claim 1 determines method, which is characterized in that the basis
The temperature that temperature value, the third moment thermal imaging system that temperature value that first moment thermal imaging system is shown, the second moment thermal imaging system are shown are shown
The temperature value that angle value and the 4th moment thermal imaging system are shown determines the corresponding outgoing of first moment black body radiation angle value, the second moment
Black body radiation is emitted angle value, third moment black body radiation outgoing angle value and the 4th moment black body radiation and is emitted angle value, specifically includes:
Temperature value, the third moment thermal imaging system that temperature value, the second moment thermal imaging system shown according to the first moment thermal imaging system is shown
The temperature value that the temperature value of display and the 4th moment thermal imaging system are shown, using formula M=σ T4Determine corresponding first moment black matrix
Radiant exitance value, the second moment black body radiation outgoing angle value, third moment black body radiation outgoing angle value and the 4th moment black matrix
Radiant exitance value；
Wherein, T is the temperature value that different moments thermal imaging system is shown, M is that different moments black body radiation is emitted angle value, and σ is Stefan-
Boltzmann constant.
10. the integral transmitance of infrared transmittivity piece according to claim 1 determines method, which is characterized in that described
Angle value, the third moment black matrix are emitted according to the first moment black body radiation outgoing angle value, the second moment black body radiation
Radiant exitance value and the 4th moment black body radiation are emitted angle value, determine the transmitance for penetrating filter disc, specifically include:
When being emitted angle value, the second moment black body radiation outgoing angle value, the third according to the first moment black body radiation
It carves black body radiation outgoing angle value and the 4th moment black body radiation is emitted angle value, using formulaIt determines and penetrates
The transmitance of filter disc；
Wherein, τ is the transmitance through filter disc, MsAngle value, M are emitted for the first moment black body radiationhFor the second moment black body radiation
It is emitted angle value, MpAngle value, M are emitted for third moment black body radiationτAngle value is emitted for the 4th moment black body radiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910145237.1A CN109708853B (en) | 2019-02-27 | 2019-02-27 | Integral transmittance determination method of infrared transmittance sheet |
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