CN106764691A - A kind of solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED - Google Patents
A kind of solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED Download PDFInfo
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- 238000001228 spectrum Methods 0.000 title claims abstract description 121
- 239000002096 quantum dot Substances 0.000 title claims abstract description 85
- 230000005457 Black-body radiation Effects 0.000 title claims abstract description 41
- 238000004088 simulation Methods 0.000 title claims abstract description 35
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 230000005855 radiation Effects 0.000 claims description 15
- 238000004806 packaging method and process Methods 0.000 claims description 13
- 230000004907 flux Effects 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 230000005284 excitation Effects 0.000 claims description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 5
- 229910002114 biscuit porcelain Inorganic materials 0.000 claims description 2
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- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000009877 rendering Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000002194 synthesizing effect Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
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- 239000004065 semiconductor Substances 0.000 description 2
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- 238000003786 synthesis reaction Methods 0.000 description 2
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
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- 239000005864 Sulphur Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
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- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/006—Solar simulators, e.g. for testing photovoltaic panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/0015—Fastening arrangements intended to retain light sources
- F21V19/002—Fastening arrangements intended to retain light sources the fastening means engaging the encapsulation or the packaging of the semiconductor device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Led Device Packages (AREA)
Abstract
The invention belongs to analog light source technical field, specially a kind of solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED.Present system includes light source module, light adjusting system, condenser lens, light-mixing machine and light-distribution lens group, light source module includes K monochromatic light quanta point LED light source or ultraviolet LED light source with different peak wavelengths, monochromatic light is converged at by condenser lens for light-mixing machine at condenser lens public focus, monochromatic light is mixed into simulated solar irradiation or simulation black matrix radiant light of the wavelength in the range of 200 1200 nm by the light-mixing machine again, finally by outgoing after light-distribution lens group.Solar spectrum of the invention and blackbody radiation spectrum simulation system are when target optical spectrum is synthesized, synthesize light under preferable performance and be more than 0.99 with correlation coefficient r of the target optical spectrum in 400 730 nm, colour temperature deviation delta CCT is less than 100 K, general colour rendering index Ra is more than 98, special colour rendering index R1 R15 are all higher than 96, and color tolerance SDCM is less than 1.
Description
Technical field
The invention belongs to analog light source technical field, and in particular to a kind of solar spectrum and black matrix based on quantum dot LED
Radiation spectrum simulation system.
Background technology
Quantum dot belongs to fluorescent nano material, by the element compounds such as zinc, selenium, cadmium, sulphur into semi-conducting material be made, its is straight
Footpath is 2 10 nm.Clearly, the carrier in semiconductor can be defined in one very to the quantum confined effect of quantum dot by it
In small space, once being subject to illumination or electro photoluminescence, carrier will be excited and transit to energy level higher.When these loads
When stream comes back to originally relatively low energy level, the visible ray of fixed wave length will be sent.Compared to traditional fluorescent material, amount
Son point advantage be：Emission wavelength can be regulated and controled by the size of quantum dot, and lateral size of dots is smaller, the optical wavelength after exciting
Smaller, the diameter of the chemical composition and particle that change quanta point material can make its fluorescence emission wavelengths cover whole visible spectrum
And Partial IR；With good linear optics property, stable performance, can undergo it is repeated multiple times excite, with higher
Luminous efficiency；Various fluorescent material need not be mixed, encapsulation is simple, and cost is relatively low；Size is less than visible light wave to quantum dot in itself
Long, light scattering and other light loss phenomenons are less.
At present, the light source based on quantum dot is used mostly ultraviolet LED to excite the various sizes of quantum dot fluorescence material to make
Its various monochromatic light of transmitting is so as to the white-light spectrum being mixed to get.Entirely may be used because the emission spectrum of quantum dot can be covered in theory
See spectrum and Partial IR, and its half-breadth can be modulated by the continuous size for changing quantum dot, therefore, reasonable
In the case of choosing quanta point material and size, the light source based on quantum dot LED can obtain very continuous synthetic spectrum, be
Perfect light source for synthesizing solar spectrum or blackbody radiation spectrum.
Existing solar spectrum or blackbody radiation spectrum simulation system have two classes, and a class is to use the light such as xenon lamp, Metal halogen lamp
Source, coordinates some specific optical filters so that the spectrum and target optical spectrum of final output are approached.Another kind of is to use different colours
LED combination light source, compensation mutually is allowed to by the spectrum for adjusting monochromatic LED one by one, while by some specific optical filters, from
And match target optical spectrum.Patent CN200910200631 proposes the light-dimming method of a species solar spectrum LED, using integrated envelope
Equipped with many LED chips of the different colours for covering visible-range as light source, drafted by theoretical calculation and experiment and
Multiple monochromatic LED radiation flux ratios needed for amendment simulation different-colour sunshine, so that it is each to simulate to match target optical spectrum
Plant light scene.Patent CN201210483543 proposes a kind of Sky-light Spectra analogy method based on artificial light sources, chooses
Metal halide light and is made as the main analog light source of Sky-light Spectra in the range of 400 2500 nm using great power LED
It is the spectrally compensating light source in the range of 400 600 nm, selects corresponding optical filter to the metal halogen in the range of 600 2500 nm
Compound light source light spectrum is modified, and the full spectrum sky optical analog in the range of 400 2500 nm is realized with relatively low cost.
The simulated spectra obtained using the above method is difficult to be coincide real solar spectrum or black with coefficient correlation higher
Body radiation spectrum, in fact its deviation is always larger.It is special and quantum dot LED light source has benefited from the advantage of multispectral narrow emission
It is not the features such as its spectrum easily adjusts controllable, stable performance, becomes following new solar spectrum and blackbody radiation spectrum simulation system
The perfect light source of system.At present, for quantum dot LED research is most of to be still in laboratory stage, but quanta point material is
Through showing good performance in an experiment, and its theoretical light efficiency is suitable with phosphorescent OLED (100 lm/W), either for one
As illumination or special light sources simulation all have very big potentiality.
The content of the invention
It is an object of the invention to provide a kind of solar spectrum based on quantum dot LED and blackbody radiation spectrum simulation system,
Solar spectrum based on quantum dot LED and blackbody radiation spectrum simulation system that the present invention is provided, comprising light source module, adjust
Photosystem, condenser lens, light-mixing machine and light-distribution lens group；Wherein, the light source module is individual with different peaks comprising K (K >=10)
It is worth the monochromatic light quanta point LED light source or ultraviolet LED light source of wavelength, is converged at monochromatic light by condenser lens saturating in focusing on
The light-mixing machine of Jing Gonggongjiaodianchu, then monochromatic light is mixed into mould of the wavelength in the range of 200 1200 nm by the light-mixing machine
Intend sunshine or simulation black matrix radiant light, finally by outgoing after light-distribution lens group；Because quantum dot LED light source has peak value ripple
The controllable and modulated advantage of half value full duration of length, spectrum after being synthesized using multiple monochrome light quanta point LED light sources relative to
The degree of fitting of true solar spectrum or blackbody radiation spectrum is high.
In the light source module, the peak wavelength of each monochromatic light quanta point LED light source in the range of 380 1200 nm,
Wave-length coverage according to target optical spectrum determines an interval in the range of 380 1200 nm, makes each quantum dot LED
The peak wavelength distribution of light source is in the interval.
When the wave-length coverage part of the target optical spectrum includes 200 380 nm, can be existed using several peak wavelengths
Ultraviolet LED light source in the range of 200 380 nm, it is therefore an objective to compensate missing of the quantum dot LED light source in ultraviolet band.
Light source in the light source module can be quantum dot LED packaging groups, ultraviolet LED excitation source+quantum dot
Fluorescent plate, or ultraviolet LED packaging.
The light source be quantum dot LED packagings when, comprising heat sink, UV LED chip, quantum dot fluorescence bisque, thoroughly
Mirror and encapsulating material etc..
When the light source is ultraviolet LED excitation source+quantum dot fluorescence plate, being scribbled on each quantum dot fluorescence plate has
The quantum dot fluorescence powder of different emission, the quantum dot fluorescence powder is excited by corresponding ultraviolet LED excitation source and sends each
Plant monochromatic light.
When the light source is ultraviolet LED packaging, its peak wavelength is in the range of 200 380 nm, and encapsulating material can
Being inorganic material (SiO2), or silicones.
Each light source is equipped with a condenser lens in the light source module, and the focus of the condenser lens is all in institute
The entrance port position of light-mixing machine is stated, after condenser lens of the monochromatic light that each light source sends through each being equipped with is focused on, institute is converged to
State light-mixing machine entrance port and these monochromatic light are mixed into close to target optical spectrum by light-mixing machine and synthesize light.
The light-distribution lens group carries out optical design to obtain required light distribution according to concrete application demand.
The application demand of the solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED is specially the sun
During simulator, the light-distribution lens group is designed as converting incident light into outgoing after directional light.
The light adjusting system is using direct current (DC) light modulation, pulse width modulation (PWM) light modulation or liquid crystal light modulation glass control
Make the radiation flux of each light source.
When the light adjusting system is dimmed using direct current (DC), the radiation of each light source is controlled to lead to by changing size of current
Amount.
When the light adjusting system is dimmed using pulse width modulation (PWM), each is controlled by changing pulse duty factor
The radiation flux of light source.
When the light adjusting system uses liquid crystal light modulation glass, sandwiched between each light source and the condenser lens being furnished with it
One liquid-crystalline glasses unit, the voltage for changing liquid-crystalline glasses unit two ends by coordination electrode carrys out the transmission of adjustable liquid crystal display glass unit
Rate, so as to control the radiation flux of each light source.
The light modulation number of the blackbody radiation spectrum of the different solar spectrums of many sets or different-colour is prefixed in the light adjusting system
According to, can quickly dim according to demand, drive light source die to be combined into required spectrum.
The light modulation data of the blackbody radiation spectrum of the different solar spectrums or different-colour simulated by theoretical calculation and
Amendment gained, it is the result of field survey, the black body radiation light of different-colour as the different solar spectrums spectrum of light modulation target
Compose the result of calculation for planck formula.
Compared with existing solar spectrum and blackbody radiation spectrum simulation system, the present invention has the advantage that：
Solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED of the invention, due to quantum dot LED light source peak
Value wavelength can control and the modulated advantage of half value full duration, and the spectrum after synthesis is relative to true solar spectrum or black body radiation
The degree of fitting of spectrum is high.
Solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED of the invention, are made using quantum dot LED
It is light source, its principle is luminous using ultraviolet LED excitation quantum dot fluorescent powder, it is to avoid the color drift of conventional fluorescent powder and light decay are not
Consistent the problems such as, it is ensured that the colour stability of spectrum simulation system.
Solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED of the invention, in synthesis target optical spectrum
Visible light part when, the peak wavelength distribution of monochromatic quantum dot LED light source in the range of 380 780 nm, by reasonable adjusting
The radiation flux of each quantum dot LED light source, can cause the colour rendering index R1 R15 for synthesizing light all greater than 96.Preferable real
Synthesize light in the case of applying and be more than 0.99 with correlation coefficient r of the target optical spectrum in 400 730 nm, colour temperature deviation delta CCT is less than
100 K, general colour rendering index Ra are more than 98, and special colour rendering index R1 R15 are all higher than 96, and color tolerance SDCM is less than 1.It is much excellent
In current existing solar spectrum or blackbody radiation spectrum simulation system.
Brief description of the drawings
Fig. 1 is the system 3 d effect graph of embodiment 1.
Fig. 2 is the system profile of embodiment 1.
Fig. 3 is the system 3 d effect graph of embodiment 2.
Fig. 4 is the system profile of embodiment 2.
Fig. 5 is the system 3 d effect graph of embodiment 3.
Fig. 6 is the system profile of embodiment 3.
Fig. 7 is the relative spectral power distribution figure of quantum dot LED light source in embodiment 1.
Fig. 8 is quantum dot LED synthetic spectrums and 2700 K black body-line comparison diagrams in embodiment 1.
Fig. 9 is quantum dot LED synthetic spectrums and 3000 K black body-line comparison diagrams in embodiment 1.
Figure 10 is quantum dot LED synthetic spectrums and 3500 K black body-line comparison diagrams in embodiment 1.
Figure 11 is quantum dot LED synthetic spectrums and 4000 K black body-line comparison diagrams in embodiment 1.
Figure 12 is quantum dot LED synthetic spectrums and 4500 K black body-line comparison diagrams in embodiment 1.
Figure 13 is quantum dot LED synthetic spectrums and 5000 K black body-line comparison diagrams in embodiment 1.
Figure 14 is quantum dot LED synthetic spectrums and 5500 K black body-line comparison diagrams in embodiment 1.
Figure 15 is quantum dot LED synthetic spectrums and 6000 K black body-line comparison diagrams in embodiment 1.
Figure 16 is quantum dot LED synthetic spectrums and 6500 K black body-line comparison diagrams in embodiment 1.
Specific embodiment
Embodiments described below is only section Example of the invention.Do not made based on the embodiment in the present invention
Other all embodiments of creative achievement, belong to protection scope of the present invention.
Embodiment 1：Ultraviolet LED encourages light source+quantum dot fluorescence plate++ 120 ° of (black body radiation simulated lights of beam angle of not focusing
Source).
Embodiment 2：Quantum dot LED packagings+do not focus+directional light (solar simulator).
Embodiment 3：Ultraviolet LED encourages light source+quantum dot fluorescence plate+focusing+directional light (solar simulator).
Embodiment 1：
Embodiment 1 is the black body radiation analog light source that a kind of light source is ultraviolet LED excitation source+quantum dot fluorescence plate, comprising light
Source module, light adjusting system, condenser lens, light-mixing machine and light-distribution lens group.Light source module has different peak wavelengths comprising 25
Monochromatic light quanta point LED light source, its arrangement mode be 5 × 5 array type arrangements.Each light source is driven to send out respectively by light adjusting system
Light, each light source is furnished with a condenser lens.The focus of all condenser lenses is in same position, and light-mixing machine entrance port
It is also at the position.The monochromatic light that each light source sends converges to the light-mixing machine in focal point by its condenser lens being furnished with
Entrance port, is mixed different monochromatic light by light-mixing machine, is finally synthesizing light and is completed outgoing after light intensity is distributed by light-distribution lens group, such as
Shown in Fig. 1.
The peak wavelength of light source is uniformly distributed in the range of 380 780 nm, is here interval setting peak value ripple with 20 nm
It is long, thus be 380 including at least peak wavelength, 400,420,440,460,480,500,520,540,560,580,600,620,
640th, each of the quantum dot LED light source of 660,680,700,720,740,760,780 nm.
The controls such as light adjusting system and driving element are mountable to the lower section of quantum dot LED light source matrix, as shown in Figure 2.
When mounted, the normal of light source exiting surface is without condenser lens for 5 × 5 array type arrangement light sources described in this
Focus.The light source of diverse location is mounted side by side, and its exiting surface direction is identical, as shown in Fig. 2 therefore each light source is furnished with
Condenser lens need to carry out single optical design, could cause that the light source emergent light of diverse location all focuses on light-mixing machine and enters
The position of loophole.
The present embodiment is specially a kind of black body radiation analog light source, and its light-distribution lens group is designed as converting incident light into light
Beam angle is 120 ° of emergent light, as shown in Figure 2.
Thus implementation is obtained a kind of solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED,
The radiation flux of each quantum dot LED light source is adjusted by light adjusting system, can be with ideal simulation solar spectrum or black matrix
Radiation spectrum.The relative spectral power distribution of the different peak wavelength quantum dot LED according to experiment measurement, with certain radiation flux ratio
Example the spectrum of these monochromatic light quanta point LED light sources is synthesized, obtained 2700 K, 3000 K, 3500 K, 4000 K,
4500 K, 5000 K, 5500 K, 6000 K, the blackbody radiation spectrum analog result of 6500 K, as shown in Fig. 8 16.Its simulation
Effect is as shown in table 1：
It should be noted that correlation coefficient r is only calculated in the range of 400 730 nm.If desired obtain in a wider context preferable
Coefficient correlation, then need to increase the span of quantum dot LED light source peak wavelength.
The quantum dot LED synthetic spectrums of table 1 compare with blackbody radiation spectrum
The synthetic spectrum of the present embodiment is more than 0.99, color with correlation coefficient r of each target optical spectrum in 400 730 nm
Warm deviation delta CCT is less than 60 K, and colour rendering index Ra is more than 98, and the 9th kind of special colour rendering index R9 is all big more than 96, R1 R15
1 is less than in 96, SDCM, far superior to existing solar spectrum or blackbody radiation spectrum simulation system at present.
Embodiment 2：
Embodiment 2 be a kind of light source be quantum dot LED packagings solar simulator, comprising light source module, light adjusting system,
Condenser lens, light-mixing machine and light-distribution lens group.Light source module includes 25 monochromatic light quanta point LED with different peak wavelengths
Light source, its arrangement mode is 5 × 5 array type arrangements.Drive each light source luminescent respectively by light adjusting system, each light source is furnished with
One condenser lens.The focus of all condenser lenses is in same position, and light-mixing machine entrance port is also at the position.Each
The monochromatic light that light source sends all converges to the light-mixing machine entrance port in focal point by its condenser lens being furnished with, will by light-mixing machine
Different monochromatic light mixing, are finally synthesizing light and complete outgoing after light intensity is distributed by light-distribution lens group, as shown in Figure 4.
The peak wavelength of light source is uniformly distributed in the range of 380 780 nm, is here interval setting peak value ripple with 25 nm
It is long, thus be 380 including at least peak wavelength, 405,430,455,480,505,530,555,580,605,630,655,680,
705th, each of the quantum dot LED light source of 730,755,780 nm.
The controls such as light adjusting system and driving element are mountable to the lower section of quantum dot LED light source matrix, herein no longer accompanying drawing
Explanation.
When mounted, the normal of light source exiting surface is without condenser lens for 5 × 5 array type arrangement light sources described in this
Focus.The light source of diverse location is mounted side by side, and its exiting surface direction is identical, as shown in Fig. 2 therefore each light source is furnished with
Condenser lens need to carry out single optical design, could cause that the light source emergent light of diverse location all focuses on light-mixing machine and enters
The position of loophole.
The present embodiment is specially a kind of solar simulator, thus light-distribution lens group be designed as converting incident light into it is parallel
Outgoing after light, as shown in Figure 4.
Embodiment 3：
Embodiment 3 is that a kind of light source is ultraviolet LED excitation source+quantum dot fluorescence plate and the sunshine of ultraviolet LED packaging
Simulator, comprising light source module, light adjusting system, condenser lens, light-mixing machine and light-distribution lens group.Light source module has comprising 25
The monochromatic light quanta point LED light source (ultraviolet LED module+quantum dot fluorescence module) of different peak wavelengths, its arrangement mode is circle
Ring-like arrangement, 25 quantum dot LED light sources are equably distributed along an annulus.Each light source is driven to send out respectively by light adjusting system
Light, each light source is furnished with a condenser lens.The focus of all condenser lenses is in same position, and light-mixing machine entrance port
It is also at the position.The monochromatic light that each light source sends converges to the light-mixing machine in focal point by its condenser lens being furnished with
Entrance port, is mixed different monochromatic light by light-mixing machine, is finally synthesizing light and is completed outgoing after light intensity is distributed by light-distribution lens group, such as
Shown in Fig. 7.
The peak wavelength of light source is uniformly distributed in the range of 280 900 nm, it is seen that spectrum and infrared spectrum part usage amount
Son point LED light source, ultraviolet spectra part uses ultraviolet LED packaging, is here interval setting peak wavelength with 25 nm, because
This comprise at least peak wavelength be 380,405,430,455,480,505,530,555,580,605,630,655,680,705,
730th, each one of the quantum dot LED light source of 755,780,805,830,855,880 nm and peak wavelength be 280,305,330,
Each one of the ultraviolet LED packaging of 355 nm.
The controls such as light adjusting system and driving element are mountable to the circular annular region center surrounded by quantum dot LED light source,
As shown in Figure 8.
Circular arrangement light source described in this when mounted, the normal of light source exiting surface by condenser lens Jiao
Point.The light source of diverse location is installed on the sphere with condenser lens focus as the center of circle, its exiting surface towards condenser lens focus,
As shown in figure 9, therefore all of condenser lens is identical, it is only necessary to applied by carrying out optical design to a condenser lens
To whole so that the light source emergent light of diverse location all focuses on the position of light-mixing machine entrance port.
The present embodiment is specially a kind of solar simulator, thus light-distribution lens group be designed as converting incident light into it is parallel
Outgoing after light, as shown in Figure 6.
Claims (10)
1. a kind of solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED, it is characterised in that comprising light source die
Group, light adjusting system, condenser lens, light-mixing machine and light-distribution lens group, using quantum dot LED light source peak wavelength is controllable, half value
The characteristics of full duration is modulated, the simulated solar irradiation of degree of fitting high is mixed to get using multiple monochrome light quanta point LED light sources
Spectrum or blackbody radiation spectrum；Wherein：
The light source module includes K monochromatic light quanta point LED light source or ultraviolet LED light source with different peak wavelengths, leads to
Monochromatic light converges at over-focusing lens the light-mixing machine at condenser lens public focus, then by the light-mixing machine by monochromatic light
Simulated solar irradiation or simulation black matrix radiant light of the wavelength in the range of 200 1200 nm are mixed into, finally by light-distribution lens group
Outgoing afterwards；K≥10；
The peak wavelength of the monochromatic light quanta point LED light source in the range of 380 1200 nm, the peak of the ultraviolet LED light source
Value wavelength is in 200 380 nm.
2. solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED according to claim 1, its feature
It is that the light source in the light source module is quantum dot LED packaging groups, or ultraviolet LED excitation source+quantum dot is glimmering
Tabula rasa, or ultraviolet LED packaging.
3. solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED according to claim 2, its feature
It is that the quantum dot LED packagings include heat sink, UV LED chip, quantum dot fluorescence bisque, lens and encapsulating material.
4. solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED according to claim 2, its feature
It is that the ultraviolet LED excitation source and quantum dot fluorescence plate are scribbled with different transmittings on each of which quantum dot fluorescence plate
The quantum dot fluorescence powder of wavelength, the quantum dot fluorescence powder is excited by corresponding ultraviolet LED excitation source and sends various monochromatic light.
5. solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED according to claim 2, its feature
It is, the ultraviolet LED packaging that its encapsulating material is inorganic material, or silicones.
6. solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED according to claim 1, its feature
It is that each light source is equipped with a condenser lens in the light source module, and the focus of the condenser lens is all in described
The entrance port position of light-mixing machine, after condenser lens of the monochromatic light that each light source sends through each being equipped with is focused on, converges to described
Light-mixing machine entrance port is simultaneously mixed these monochromatic light by light-mixing machine.
7. solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED according to claim 1, its feature
It is that the light-distribution lens group carries out optical design to obtain required light distribution according to concrete application demand.
8. solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED according to claim 7, its feature
It is that the light of light-mixing machine outgoing is converted into directional light by described light-distribution lens group, will with the application for meeting solar simulator
Ask.
9. solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED according to claim 1, its feature
It is that the light adjusting system controls each using direct current DC light modulations, pulse width modulation (PWM) light modulation or liquid crystal light modulation glass
The radiation flux of light source；Wherein：
Described direct current DC light modulations, the radiation flux of each light source is controlled by changing size of current；
Described pulse width modulation (PWM) light modulation, the radiation flux of each light source is controlled by changing pulse duty factor；
Described liquid crystal light modulation glass, is clipped between light source and the condenser lens be furnished with it, and liquid crystal glass is changed by coordination electrode
The voltage at glass unit two ends carrys out the transmitance of adjustable liquid crystal display glass unit, so as to control the radiation flux of each light source.
10. solar spectrum and blackbody radiation spectrum simulation system based on quantum dot LED according to claim 1, it is special
Levy and be, the light modulation number of the blackbody radiation spectrum of the different solar spectrums of many sets or different-colour is preset in the light adjusting system
According to quick light modulation according to demand drives light source die to be combined into required spectrum；Wherein：
Described different solar spectrums or the light modulation data of the blackbody radiation spectrum of different-colour, are simulated by theoretical calculation and are repaiied
Positive gained, it is the result of field survey as the different solar spectrums of light modulation target, and the blackbody radiation spectrum of different-colour is
The result of calculation of planck formula.
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