CN106195914A - Scattering device and light fixture - Google Patents
Scattering device and light fixture Download PDFInfo
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- CN106195914A CN106195914A CN201610605667.3A CN201610605667A CN106195914A CN 106195914 A CN106195914 A CN 106195914A CN 201610605667 A CN201610605667 A CN 201610605667A CN 106195914 A CN106195914 A CN 106195914A
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- scattering
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- scatter plate
- transparent medium
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- 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
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The embodiment of the present invention provides a kind of scattering device, including: scatter plate, scatter plate includes the incidence surface receiving light, and the exiting surface of emergent ray；Scatter plate also includes transparent medium, and the first kind scattering particles being dispersed in transparent medium.Wherein, first kind scattering particles can form Rayleigh scattering to the light that the incidence surface being scattered plate receives, and the Rayleigh scattering light formed through first kind scattering particles is scattered that the exiting surface of plate penetrates.The embodiment of the present invention also provides for a kind of light fixture, comprises scattering device, and light source, and the light that this light source sends penetrates after scatter plate scatters.Light after a kind of scattering device outgoing of the embodiment of the present invention can the natural feeling of the blue canopy of the heavens of the colour temperature of simulated solar irradiation and clear sky, the natural feeling increasing light promotes comfort level.
Description
Technical field
The present embodiments relate to optical technical field, particularly relate to a kind of scattering device and light fixture.
Background technology
Owing to there is no air in cosmic space, when people do not have front in the face of the sun or sidereal time, sunlight or
The light of fixed star by scattering or cannot be refracted into human eye, and therefore sky is black.And from earth, due to air grain
Light is scattered by son, it can be seen that in the case of fine day, and the natural light through scattering makes sky present bright indigo plant
Color or light blue.And in the case of the cloudy day, the natural light through scattering makes sky present positive white, and at Horizon sooner or later
The sky of line presents Chinese red.
In modern architecture, often lack nature light owing to space limits or the situation that daylighting is not enough occur, for improving this
The situation of kind, is assembled with artificially lighting light fixture in major part is built, but, the light that these light fixtures send is in brightness and colour temperature
Aspect is fixed all the time, it is impossible to change along with the change of the time in season or one day as natural light, can not be along with sky
The change of vaporous condition and change, this light can only meet the lighting demand of people, and have ignored people to available light and the need of environment
Ask.
Additionally, when people works for a long time under the thick-and-thin environment of this brightness and colour temperature, visual fatigue can be caused, very
To the discomfort causing psychology.
The light fixture of prior art, it is impossible to make user visually experience the visual effect of the sun, can not experience fine
It the blue canopy of the heavens, it is impossible to give visually with psychological gratification.
Prior art uses blue transparent glass or this kind of transparent medium of acrylic, when light is through these transparent Jie
Matter, absorbs other light in addition to blueness, and blue ray is then through transparent medium outgoing, although such blue tinted glass
The light of blueness can be formed, but emergent ray but becomes the blue light colder than white light, more can not simulate true nature light
According to sensation.The natural feeling of the visually clear sky blueness canopy of the heavens can not be provided to people by prior art, also cannot
Bring the gratification on user psychology.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of scattering device, it is possible to by light is scattered process, mould
Intend the atmosphere dispersion effect for light, thus simulate the effect of the blue canopy of the heavens under fine day environment further.
The technical scheme that the embodiment of the present invention uses is as follows:
The embodiment of the present invention provides a kind of scattering device, it is characterised in that including:
Scatter plate, scatter plate includes the incidence surface receiving light, and the exiting surface of emergent ray；
Scatter plate also includes transparent medium, and the first kind scattering particles that is dispersed in transparent medium and Second Type
Scattering particles, wherein,
The light that the incidence surface being scattered plate is received by first kind scattering particles forms Rayleigh scattering, scatters through the first kind
The Rayleigh scattering light that particle is formed is scattered the exiting surface injection of plate.
Another embodiment of the present invention also provides for scattering device, also includes Second Type scattering particles, Second Type scattering grain
Son is dispersed in transparent medium, and the light that the incidence surface being scattered plate is received by Second Type scattering particles forms Mie scattering, warp
The Mie scattering light that Second Type scattering particles is formed is scattered the exiting surface injection of plate.
Another embodiment of the present invention also provides for scattering device, and wherein, first kind scattering particles is equal with the first preset concentration
Even it is dispersed in transparent medium.
Another embodiment of the present invention also provides for scattering device, and wherein, Second Type scattering particles is equal with the second preset concentration
Even it is dispersed in transparent medium.
Another embodiment of the present invention also provides for scattering device, wherein,
The incidence surface of scatter plate and the exiting surface of scatter plate are parallel to each other；Or
The incidence surface of scatter plate and the exiting surface of scatter plate form default angle.
Another embodiment of the present invention also provides for scattering device, and wherein, transparent medium is liquid, or, transparent medium is solid
Body.
Another embodiment of the present invention also provides for scattering device, wherein, when transparent medium is liquid, and first kind scattering grain
Son, and/or, Second Type scattering particles forms lyosol in transparent medium.
Another embodiment of the present invention also provides for scattering device, and wherein, first kind scattering particles comprises at least one can
Produce the particle of Rayleigh scattering effect；Second Type scattering particles comprises at least one particle that can produce Mie scattering effect.
On the other hand, the embodiment of the present invention also provides for a kind of light fixture, and wherein, this light fixture comprises the scattering dress of any of the above-described
Put, also include light outgoing after scattering device scatters that light source, light source send.
The technical scheme of the embodiment of the present invention have the advantage that the embodiment of the present invention a kind of scattering device can by from
Light is scattered by the light that incidence surface receives through transparent medium and the scattering particles being dispersed in transparent medium, is formed
Short wavelength light blue light and purple light can be carried out strong scattering by the first kind particle of Rayleigh scattering, dissipate long wavelength's light
Penetrate seldom, and major part is directly passed through.Owing to long wavelength's light the most directly passes through, shortwave light through strong scattering, this
Sample just can be after positive white light be by this scatter plate, and scatter plate scatters the light of blueness, and long wavelength's light is similar to simultaneously
Directly pass through, cause the colour temperature of emergent light to reduce.Thus simulate the natural feeling of the blue canopy of the heavens of clear sky, thus further
Improve the gratification on user psychology.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is this
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to root
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is one embodiment of the invention one scattering device structural representation；
Fig. 2 is the first kind scattering particles scattering schematic diagram to light in a kind of scattering device of one embodiment of the invention；
Fig. 3 is the Second Type scattering particles scattering schematic diagram to light in a kind of scattering device of one embodiment of the invention.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
Inventor finds when the device of research simulation atmospheric scattering, simulates the dress of atmospheric scattering in prior art
Put or method cannot form good Rayleigh scattering and Mie scattering.Such as, when using sodium thiosulfate to react with dilute hydrochloric acid,
Slowly producing water-fast solid-state sulfur molecule in solution, solid-state sulfur molecule diameter is less than the wavelength of visible ray.Along with reaction
Carrying out, the coalescence of multiple sulfur molecules forms larger particles, its diameter close to and increasingly greater than visible wavelength.In above-mentioned course of reaction
In, utilize white light solution, Rayleigh scattering and Mie scattering phenomenon can be observed respectively.
But simulated atmosphere scattering in this way, it is impossible to the specific effect of long-term holding, the most uncontrollable formation Rayleigh
The size of the particle of scattering and formation Mie scattering is with how many.
Prior art also uses crystal formation Rayleigh scattering and the Mie scattering of artificial opals, in this process, has
Many trickle bubble structures, these bubble structures at about 10nm, just can form the condition of Rayleigh scattering, by egg mostly
Bai Shi thinly slices, allow light path perpendicular through, along with the superposition of thin slice, can observe in side that the air imitating different weather dissipates
The light scattering penetrated, but owing to opaline transparency is the highest, have impact on light by efficiency, and, in opal
The size of bubble structure is uncontrollable, and bubble concentration is the most uncontrollable, it is impossible to the specific effect of long-term holding, the most uncontrollable
Form the size of particle of Rayleigh scattering and formation Mie scattering with how many.Further, since opal belongs to degeneration gem, internal
Moisture can gradually evaporate, it is impossible to long-term keep the same character, it is impossible to form stable dispersion effect.
It is only then geometric optics scattering principle as the most existing scatter plate, the light of full spectrum is carried out indifference
Other scattering, forms the diffused light with illuminating effect.
Inventor finds in studying for a long period of time, will form stable and controlled dispersion effect, need to avoid prior art
Shortcoming.
Fig. 1 is one embodiment of the invention one scattering device structural representation.According to Fig. 1, the embodiment of the present invention one
Plant scattering device, including:
Scatter plate 10, scatter plate includes the incidence surface 11 receiving light, and the exiting surface 12 of emergent ray, this scatter plate
Incidence surface 11 and the exiting surface 12 of 10 can be parallel to each other, it is also possible to mutually form a default angle.Change scatter plate 10
Exiting surface 12 and incidence surface 11 between angle can adjust the angle of light from exiting surface 12 injection, so that light shines
Penetrate different directions.
Scatter plate also includes transparent medium, and the first kind scattering particles being dispersed in transparent medium, it is possible to understand that
, in embodiments of the present invention, transparent medium can be liquid-transparent medium, or can also be solid transpar-ent dielectric.
As a example by transparent medium is for liquid-transparent medium, first kind scattering particles is dispersed in liquid-transparent medium, right
Incident ray produces Rayleigh scattering.Such as, when transparent medium is liquid-transparent medium, this liquid can be water, for example, it is possible to
It is the ultra-pure water not having impurity, it is also possible to be distilled water, or, this transparent medium can also be other solvents, or mixes molten
Agent, such as aqueous solvent or oil-based solvent, aqueous solvent such as alcohol solvent, methanol solvate, acetone solvent, oil-based solvent example
Such as propylene glycol solvent or xylene solvent etc..
When transparent medium is solid transpar-ent dielectric, this solid transpar-ent dielectric can be hydrogel, and scattering particles is uniform
In disperse water gel.Concrete way can be that scattering particles, monomer, cross-linking agent and water crosslink the hydrate of formation.
As a example by first kind scattering particles, concrete scheme is it may be that first kind scattering particles, monomer, cross-linking agent three are uniform
Dispersion in aqueous, form the hydrogel that is uniformly distributed therein of scattering particles.
As a example by first kind dispersed particle is as titanium dioxide, TiO 2 particles can be dispersed in ultra-pure water
In, form titania hydrosol, by titania hydrosol, acrylic acid and N,N-DMAA at catalyst tetramethyl
Under the effect of base ethylenediamine and potassium peroxydisulfate, form hydrogel, finally make TiO 2 particles be uniformly dispersed in solid saturating
In bright WATER AS FLOW MEDIUM gel；As a example by first kind dispersed particle is as silicon dioxide, silicon dioxide granule can be dispersed in
In ultra-pure water, form silica hydrosol, silica hydrosol, acrylamide and N,N-DMAA are being urged
Under the effect of agent tetramethylethylenediamine and potassium peroxydisulfate, form hydrogel, finally make silicon dioxide granule disperse uniformly
In solid transpar-ent dielectric hydrogel.
It is understood that in embodiments of the present invention, can be at transparent medium as long as first kind scattering particles is satisfied
In to incident ray produce Rayleigh scattering the most permissible, limit a certain kind or certain several embodiment of the present invention in lifted
Example.What deserves to be explained is, transparent medium in embodiments of the present invention, either liquid-transparent medium or air transparent Jie
Matter, or solid transpar-ent dielectric, as long as transparency is high so that the energy transmission smoothly of most of light, and can be good at dispersion
Scattering particles is the most permissible, is also not necessarily limited in the embodiment of the present invention institute's illustrated example, numerous to list herein.
When transparent medium is solid transpar-ent dielectric, two faces that this solid transpar-ent dielectric is relative can dissipate respectively as this
Penetrating incidence surface and the exiting surface of plate, first kind scattering particles is dispersed in solid transpar-ent dielectric.Such as, transparent medium is solid
During transparent medium, concrete scheme is it may be that change using surface modifier to carry out surface as the nanoparticle of scattering particles
Property, carry out polymerisation in bulk in being mixed into methyl-propyl acid methyl ester afterwards and become lucite.What deserves to be explained is, implement in the present invention
As long as the solid transpar-ent dielectric transparency in example is high so that the energy transmission smoothly of most of light, and it is scattered to can be good at dispersion
Radion is the most permissible, numerous to list herein.
Further, transparent medium in embodiments of the present invention, either liquid-transparent medium, or solid transparent
Medium, on the basis of meeting highly transparent and can disperseing scattering particles well, is capable of withstanding photoaging, chemical simultaneously
Matter is stable, and is not easy to react with scattering particles, and long-term particle of placing does not precipitates.Body invariance is then that the present invention implements
A kind of preferably transparent medium of example.
In embodiments of the present invention, the light that the incidence surface being scattered plate receives can be formed auspicious by first kind scattering particles
Profit scattering, the Rayleigh scattering light formed through first kind scattering particles is scattered that the exiting surface of plate penetrates；
It is understood that Rayleigh scattering is also known as " molecular scattering ".When scattering particles yardstick is much smaller than lambda1-wavelength,
Scattered light intensity in its all directions is different, and this intensity is inversely proportional to the wavelength biquadratic of incident illumination, and this phenomenon claims
For Rayleigh scattering.The light of scattering is identical in the degree of light direction of advance and in the reverse direction, and is hanging down with incident ray
On straight direction, degree is minimum.Under normal circumstances, in Rayleigh scattering accounts for leading atmospheric environment, strong at atmospheric molecule dissipates
Penetrating under effect, blue light is scattered to fill the air sky, and sky i.e. presents sky blue.
By the embodiment of the present invention, the light that a kind of scattering device of the embodiment of the present invention can will receive from incidence surface
Through transparent medium and the scattering particles being dispersed in transparent medium, light is scattered, forms the first kind of Rayleigh scattering
Short wavelength light blue light and purple light can be carried out strong scattering by particle, to long wavelength's light directly by and absorb seldom,
Thus can be after positive white light to be by this scatter plate, scatter plate scatters the light of blueness, and through the embodiment of the present invention
The light of scatter plate then presents the colour temperature of warm white, so that present the blue canopy of the heavens and the effect of warm white nature light in the same time
Really such that it is able to making user realize sensation and the sensation of the blue canopy of the heavens of sunlight, the natural feeling increasing light promotes
Comfort level.
Further, the scattering device of the embodiment of the present invention, also include Second Type scattering particles, this Second Type scatters
Particle is dispersed in transparent medium, and the light that the incidence surface being scattered plate is received by Second Type scattering particles forms Mie scattering,
The Mie scattering light formed through Second Type scattering particles is scattered that the exiting surface of plate penetrates.
The light that the incidence surface of scatter plate can be received by Second Type scattering particles forms Mie scattering, dissipates through Second Type
The Mie scattering light that radion is formed is scattered the exiting surface injection of plate.
It is understood that Mie scattering, also known as Mie scattering, it is a kind of " coarse grain scattering " or " bulky grain scattering ".When
When scattering particles yardstick is close or larger than lambda1-wavelength, the light intensity of its scattering is asymmetric in all directions, wherein most
Incident ray is scattered along direction of advance, and such phenomenon is referred to as Mie scattering.
In embodiments of the present invention, transparent medium comprises simultaneously light is carried out Rayleigh scattering the first kind scattering grain
Son and light is carried out two kinds of scattering particless of Second Type scattering particles of Mie scattering, thus incident light is produced Rayleigh
Scattering and Mie scattering, owing to real atmospheric scattering always comprises Rayleigh scattering and Mie scattering, therefore, the embodiment of the present invention
In when comprising Rayleigh scattering and Mie scattering, under simulation fine day environment that can be more perfect, the light of Real Atmosphere environment pair dissipates
Penetrate effect.
Further, in the above embodiment of the present invention, first kind scattering particles is dispersed with the first preset concentration
In transparent medium, Second Type scattering particles can be dispersed in transparent medium with the second preset concentration.Wherein, first
The dispersion effect that preset concentration and the second preset concentration can produce as required determines.Such as, when first kind scattering particles
During for anatase titanium dioxide particle that particle diameter is 3-10 ran, such as, the anatase titanium dioxide particle of 5 nanometers, should
Anatase titanium dioxide particle concentration in transparent medium can adjust between 4-20g/L, forms saturating at 1-4mm of thickness
Bright dielectric layer, such as, forms the concentration transparent dielectric layer at 4-20g/L of 3mm.Second scattering particles be particle diameter be 18 to 100
The hydrophilic titanium oxide particle of nanometer, such as, the anatase titanium dioxide particle of 30 nanometers, this hydrophilic titanium oxide particle
Concentration in transparent medium can adjust between 0.1-0.30g/L, and formation thickness is at the transparent dielectric layer of 1-4mm, such as,
Form the concentration transparent dielectric layer at 0.1-0.30g/L of 3mm.
It is understood that when the scattering particles of a certain type concentration in transparent medium is the biggest, dissipate the most accordingly
Penetrate intensity the biggest, such as, when first kind acceleration of concentration of scattering particle is the biggest, then Rayleigh intensity is the biggest, when the first kind scatters
Particle concentration is the least, then Rayleigh intensity is the least, same, when Second Type acceleration of concentration of scattering particle is the biggest, then Mie scattering is strong
Spend the biggest, when Second Type acceleration of concentration of scattering particle is the least, then Mie scattering intensity is the least.Therefore, along with first kind scattering particles
With the change of both Second Type scattering particless concentration, the dispersion effect of incident ray can become different, so that outgoing
Light effects is along with change.
Further, in embodiments of the present invention, the ratio of the first preset concentration and the second preset concentration can adjust.
It is understood that in embodiments of the present invention, the first preset concentration of the first scattering particles and the second scattering grain
Second preset concentration of son can adjust respectively, and when adjusting respectively in the presence of both, the first preset concentration and second is preset dense
The ratio of degree, or the difference between both all can change.And the change of both ratios or difference also can make to dissipate
Penetrate effect to change therewith.As a example by ratio changes, when the first preset concentration and the Second Type that adjust first kind scattering particles
During the ratio of the second preset concentration of scattering particles so that through embodiment of the present invention scatter plate emergent light effect not
With, such as, when the first preset concentration is higher than the second preset concentration, the light of the canopy of the heavens of fine day can be formed through this scatter plate
Sense, and when the second preset concentration is gradually increased, the air of the weather that light can simulate slight haze through this scatter plate dissipates
Penetrate effect, then can simulate weather big of severe haze when continuing the concentration increasing Second Type scattering particles further
Gas dispersion effect.
In embodiments of the present invention, the ratio by adjusting the first preset concentration and the second preset concentration can be simulated different
In the case of the dispersion effect of air.
Further, in embodiments of the present invention, the incidence surface of scatter plate and the exiting surface of scatter plate are parallel to each other, or
Person, the incidence surface of scatter plate and the exiting surface of scatter plate form default angle.Light is gone out when the incidence surface of scatter plate and scatter plate
When face is parallel to each other, then scatter plate is the same for the dispersion effect of incident illumination at the regional of plane.
When the incidence surface of scatter plate and the exiting surface of scatter plate form default angle, due to the dispersion effect that light path is short
Little, the dispersion effect of optical length is big, therefore, it is possible to allow light form different path length, scatter plate pair in transparent medium
It is different in the dispersion effect of incident illumination at the regional of plane, to reach the fade effect of scattering.
Further, in embodiments of the present invention, transparent medium is liquid, or, transparent medium is solid.
When transparent medium is liquid, first kind scattering particles, and/or, Second Type scattering particles is at transparent medium
The lyosol that middle formation is stable.Concrete, liquid-transparent medium can be water, ultra-pure water, distilled water or other character
Transparent and uniform and stable liquid that is single or that mix.
Concrete, it is molten that first kind scattering particles and Second Type scattering particles form stable liquid in transparent medium
Glue.Such as, first kind scattering particles and Second Type scattering particles can be uniformly dispersed in transparent distilled water solution
Form stable lyosol, more such as, first kind scattering particles and/or Second Type scattering particles can disperse uniformly
Transparency liquid colloidal sol is formed in transparent liquid dispersion medium.
Or, when transparent medium is solid transpar-ent dielectric, first kind scattering particles, and/or, Second Type scattering grain
Son may be uniformly dispersed in transparent medium.Uniform particle can be dispersed in solid transparent medium in embodiments of the present invention
In, form stable solid-solid colloidal sol.It is for instance possible to use the solid-state material of the high transparency such as acrylic, PC, glass is as solid-state
Disperse medium, is evenly distributed nano material wherein, and is ensureing that scattering particles can be dispersed in this medium
In the case of not reuniting, concentration is big as far as possible, thus can reach the thickness of the scatter plate of scattering strength needed for reducing,
Thus avoid the inconvenience that the hydrosol brings in actual use.
Further, in embodiments of the present invention, when transparent medium is liquid, the incidence surface of scatter plate and scatter plate
Exiting surface is transparent material.Such as, the incidence surface of scatter plate and exiting surface are transparent solid substrate, such as glass.Use thoroughly
Bright material is as scatter plate, thus improves the light emission rate of the light through scatter plate.
Further, in embodiments of the present invention, first kind scattering particles is dispersed in the first preset concentration
In bright medium, Second Type scattering particles is dispersed in transparent medium with the second preset concentration.Such as, dissipate with the first kind
As a example by radion is the anatase titanium dioxide particle that particle diameter is 3-10 nanometer, it is possible to form the anatase titanium dioxide titanium dioxide of Rayleigh scattering
The titanium particle the first preset concentration in transparent medium can form the thickness transparent medium at 1-4mm in the range of 4-20g/L
Layer, such as, forms the concentration transparent dielectric layer at 4-20g/L of 3mm..With Second Type scattering particles for particle diameter for 18 to 100
As a example by the hydrophilic titanium oxide particle of nanometer, it is possible to form the hydrophilic titanium oxide particle of Mie scattering in transparent medium
The second preset concentration can form thickness at the transparent dielectric layer of 1-4mm, such as, formed in the range of 0.1-0.30g/L
The concentration of 3mm is at the transparent dielectric layer of 0.1-0.3g/L.Under above-mentioned concentration, the hydrosol of two kinds of nanoparticles is mixed
After, form the transparent dielectric layer of 3mm thickness, under this concentration, the scatter plate of the embodiment of the present invention can make through scatter plate
The incident light of incidence surface at the dispersion effect simulating clear sky through transparent medium and scattering particles.
Such as, as a example by first kind scattering particles is for anatase titanium dioxide particle that particle diameter is 5 nanometers, it is possible to formed
The anatase titanium dioxide particle of Rayleigh scattering the first preset concentration in transparent medium can about about 4-20g/L, shape
Become thickness at the transparent dielectric layer of 1-4mm, such as, form the concentration transparent dielectric layer at 4-20g/L of 3mm..With Second Type
As a example by scattering particles is the hydrophilic titanium oxide particle that particle diameter is 18 to 100 nanometers, it is possible to form the hydrophilic of Mie scattering
The TiO 2 particles the second preset concentration in transparent medium can in the range of about 4-20g/L left and right, formed thickness exist
The transparent dielectric layer of 1-4mm, such as, forms the concentration transparent dielectric layer at 0.1-0.3g/L of 3mm.Under this concentration, will
After the hydrosol of two kinds of nanoparticles mixes, form the thickness transparent dielectric layer at 1-4mm, such as, form the transparent of 3mm
Dielectric layer, can make the light being irradiated to scatter plate through scatter plate transparent medium and scattering particles and through exiting surface outgoing
Time, the effect of the air of simulation slight pollution.
It is understood that in embodiments of the present invention, it is possible to the first of the first particle of generation Rayleigh scattering is preset dense
Degree can determine according to the concentration that can produce Rayleigh scattering particle in atmosphere, it is possible to produces the second particle of Rayleigh scattering
Second preset concentration can determine according to the concentration that can produce Mie scattering particle in atmosphere.In embodiments of the present invention,
Atmospheric various state can be imitated by the concentration adjusting scattering particles.
Further, in embodiments of the present invention, first kind scattering particles the first preset concentration scatters with Second Type
The ratio of particle the second preset concentration can adjust.Concrete, add in 5L distilled water 25 gram of 5 nano-titania particle and
After 1 gram of 30 nano-titania particle, dispersed with stirring is uniform, after forming the transparent dielectric layer of 3mm, can simulate Rui Lishi scattering
More atmospheric scattering；The most such as, 5L distilled water adds 25 gram of 5 nano-titania particle and 10 gram of 30 nanometer titanium dioxide
After titanium particle, dispersed with stirring is uniform, after forming the transparent dielectric layer of 3mm, can simulate the atmospheric scattering that Mie scattering is more.Logical
Cross similar method, the concentration of the first kind scattering particles being dispersed in solid dielectric can be adjusted, and/or, Second Type
The concentration of scattering particles.In embodiments of the present invention, by adjusting equally distributed first kind scattering particles in transparent medium,
And/or, the quantity of Second Type scattering particles, the concentration of two kinds of scattering particless can be adjusted, thus the first kind can also be adjusted
Type scattering particles and the ratio of Second Type acceleration of concentration of scattering particle.When the concentration ratio of first kind scattering particles improves, then lead to
Cross the atmospheric scattering when scatter plate of the embodiment of the present invention can be simulated fine, and when Second Type scattering particles
When concentration ratio improves, then can simulate the atmospheric scattering of pollution when light through the scatter plate of the embodiment of the present invention, and enter
One step, by changing the concentration of Second Type scattering particles, in other words, by changing the concentration and the of Second Type scattering particles
The ratio of the concentration of one type scattering particles can simulate different Real Atmosphere dispersion effects.
Further, it is possible to use the Production conditions formula of Rayleigh scattering and Mie scattering determines first kind scattering particles
With concentration and both concentration ratio of Second Type scattering particles, public by the Production conditions of Rayleigh scattering and Mie scattering
Formula, selects diameter suitable and stable chemical nature light-colored particles, it is dispersed in transparency height and chemical property is steady
In fixed medium, then by adjusting the concentration of particle, carry out simulated atmosphere for the Rayleigh scattering of light and Mie scattering effect.At this
In inventive embodiments, as long as the light-colored particles of scattering particles stable chemical nature is the most permissible, include, but are not limited to titanium dioxide
Titanium particle, transparent medium can be liquid or solid, such as acrylic, PC or glass etc., as long as its character is stable, does not allows
Easily react the most permissible with scattering particles.
Further, in embodiments of the present invention, first kind scattering particles comprise at least one can produce Rayleigh dissipate
Penetrate the particle of effect；Second Type scattering particles comprises at least one particle that can produce Mie scattering effect.
Generally according to the scale parameter α of particle, existing theory determines which kind of dispersion effect particle can produce, the diameter of particle
For r, scale parameter be α=2 π r/ λ, λ be optical wavelength.
When scale parameter α is much smaller than 0.1, available Rayleigh scattering formula calculates scattering strength；
When scale parameter 50 > α >=0.1 time, available Mie scattering formula calculates scattering strength.
As a example by 480nm blue light, according to formula, when particle diameter is less than 7.9nm, for the blue light line of wavelength 480nm
Formed is Rayleigh scattering.In the case of particle diameter is less than 4 microns more than 7.9nm, the blue light for wavelength 480nm is linear
Become is Mie scattering.
Inventor finds through many experiments, and the rule in above-mentioned formula is not always followed in the scattering of particle.
Illustrate with first kind scattering particles, such as, 5 Wastewater by Nanometer Anatase titanium dioxide in distilled water solvent, its produce light
Dispersion effect is Rayleigh scattering；30 nano aluminium oxides are in distilled water solvent, and its optical scattering effect produced is that Rayleigh dissipates
Penetrate；In 18 nano silicon distilled water solvents, its optical scattering effect produced is Rayleigh scattering.In the embodiment of the present invention
In, this is not enumerated.
Inventor effectively scatters diameter by what great many of experiments obtained that experimental data determines particle, finds that particle is to light
The effect being scattered and the character of particle itself, shape, and the medium residing for particle is relevant.Which kind of scattering particles itself is
Material, possess any form and dimension, and which kind of disperse medium certain scattering particles is in, determines this scattering particles and exists
The dispersion effect produced in this disperse medium, it is to be understood that above-mentioned disperse medium i.e. transparent medium.
The effectively scattering diameter of concrete determination particle such as, be able to be tested specific by experiment and the method for statistics
Particle " effectively scattering diameter " in certain medium, it is average that the theoretical glazed thread of first calculating is collided from incidence surface to exiting surface
Number of particles, then by such as optical instrument measure light through during overall scattering strength to characteristic frequency light, use
Overall scattering strength and average number of particles obtain this particle effective optical scattering intensity in this medium, further according to existing
In theory, the relation of scattering strength and spheroidal particle diameter draws the effective scattering in this particular medium of this specified particle
Diameter.
Owing to said method relates to the equipment of more complicated costliness, therefore the present invention uses spectrogrph in research process,
It is formula or the formula of Mie scattering of Rayleigh scattering by measure that dispersion effect meets, simply distinguishes what this particle was formed
It is Mie scattering or Rayleigh scattering, is reached the intensity needed afterwards by the concentration of regulation scattering particles.
Therefore, in embodiments of the present invention, the specified particle of certain size can be measured at certain by the way of experiment
Which kind of scattering dispersion effect in particular medium meets is distinguished this specified particle of this size in this specific medium
For first kind scattering particles or Second Type scattering particles, when forming the scatter plate of the embodiment of the present invention, according to reality
Test result and particle and transparent medium are carried out selection.
In practical implementations, can show that various particle is in different dispersion by the experiment of said method and statistics
In the scattering type that can produce, do not repeat at this.
In embodiments of the present invention, first kind scattering particles comprises at least one particle that can produce Rayleigh scattering；
Second Type scattering particles comprises at least one particle that can produce Mie scattering.
Such as, first kind scattering particles can include one below or combination:
Particle diameter is the anatase titanium dioxide particle of 5 ran, and this anatase titanium dioxide uniform particle is dispersed in steaming
In distilled water solvent；Particle diameter is the aluminium oxide of 20-30 nanometer, and this aluminium oxide particles is dispersed in distilled water solvent；Particle diameter is
The silicon dioxide granule of 18-30 nanometer, this silicon dioxide granule is dispersed in distilled water solvent.
Through experimental analysis, 5 Wastewater by Nanometer Anatase titania hydrosols, its particle can produce Rayleigh scattering, 30 nanometers
Alumina hydrosol, its particle can produce Rayleigh scattering, 18 nano silica hydrosol, and its particle can produce Rayleigh and dissipate
Penetrate.
Second Type scattering particles can include one below or combination:
Particle diameter be the TiO 2 particles of 30 nanometers in distilled water solvent, it can produce Mie scattering, 50 nano-silicas
SiClx particle can produce Mie scattering in distilled water solvent.
In embodiments of the present invention, particle diameter is used to form light at the hydrophilic titanium oxide particle of 18 to 100 nanometers
Mie scattering effect, particularly, such as select mean diameter be that the hydrophilic titanium dioxide particle of 30nm is as realizing Mie scattering
Particle.
In an alternative embodiment of the invention, it is provided that a kind of light fixture, this light fixture includes above-mentioned scattering device, also includes light source,
The light that this light source sends outgoing after this scattering device scatters.
In a specific embodiment, use following material to realize simulating the air Rayleigh scattering effect of pure sky
Material:
Transparent medium, it is also possible to be referred to as disperse medium, use the free from foreign meter and pure distilled water of ion.
First kind scattering particles: select the anatase titanium dioxide dioxide photocatalyst titanium particle of 5nm as realizing Rayleigh scattering
Particle；
Second Type scattering particles: selecting particle diameter is that the hydrophilic titanium dioxide particle of 30nm is as the grain realizing Mie scattering
Son.Add a little Mie scattering effect particle in the present embodiment, it is possible to more true simulated atmosphere scattering, because in actual environment
In be the sky not existing and having not a particle of Mie scattering effect.
Light source: the concentration torch that selection power is 20W, colour temperature is 7000K, hot spot uniform, light angle is 15 degree is made
Use for approximation point source.Owing to hot spot angle is little, can in the case of less demanding approximate simulation directional light.
Scatter plate: selection bottom surface is 50*5cm, height is the glass container of 50cm.End face reserves aperture as Water Exit
Hole.
50-300 gram is added in 5L distilled water, such as 100 gram 5 nano-titania particle and 10-50 gram, such as 25 grams
After the 30nm nano-titania particle of left and right, dispersed with stirring is uniform, after being circulated into glass container.Light source is placed on distance glass
At the axis of container center point about 268CM, and this glass container of vertical irradiation, in this distance, angle of scattering is 15 degree
Light just can completely cover the surface of whole glass container.
After being fixed by light source, opening switch, the another side at glass container is observed, it can be seen that whole glass
Container presents the light scattering effect of blueness, and light becomes the warm gold-tinted of about 5500K from the positive white light of 7000K, and simulation is similar
The azure effect of air Rayleigh scattering and daylight lighting effect under clear sky.
In order to simulate Rayleigh scattering and the simultaneous low saturation of Mie scattering light blue sky effect under slight pollution weather
Fruit uses following material:
Transparent medium, it is also possible to be referred to as disperse medium, use the free from foreign meter and pure distilled water of ion.
First kind scattering particles: select the anatase titanium dioxide dioxide photocatalyst titanium particle of 5nm as realizing Rayleigh scattering
Particle.
Second Type scattering particles: selecting particle diameter is that the hydrophilic titanium dioxide particle of 30nm is as the grain realizing Mie scattering
Son.
Light source: the concentration torch that selection power is 20W, colour temperature is 7000K, hot spot uniform, light angle is 15 degree is made
Use for approximation point source；
Scatter plate: selection bottom surface is 50*5cm, height is the glass container of 50cm.End face reserves aperture as Water Exit
Hole.
50-300 gram is added in 5L distilled water, such as 100 gram 5 nano-titania particle and 50-300 gram, such as 100
Gram 30 nano-titania particles after, dispersed with stirring is uniform.The hydrosol configured is poured in ready glass container,
And seal aperture with stopper in order to avoid falling into dust.It is disposed vertically.Light source is placed on distance glass container central point about 268CM's
At axis, and this glass container of vertical irradiation, in this distance, angle of scattering is that the light of 15 degree just can completely cover
The surface of whole glass container.
After being fixed by light source, opening switch, the another side at glass container is observed, it can be seen that whole glass
Container presents the light scattering effect azury of low saturation, and the colour temperature of emergent light than in previous test brighter colors
Temperature is some higher, and reason is that scatter plate exists Rayleigh scattering and Mie scattering effect to incident ray simultaneously, and one Rayleigh scattering is produced
Raw blue light, after again passing by Mie scattering, reduces saturation, and its two incident ray also has the effect of Mie scattering.When from
The when that glass container front being observed, core, vertically into the light of eyes, becomes about from the cool white light of 7000K
The positive white light of 6500K, why colour temperature reduces fewer, is because Mie scattering more intensive for the scattering of long wavelength's light, and
Light can be carried out strong forward scattering, and due to Mie scattering effect, remaining region of glass container then presents low full
Light blue with spend.
The scatter plate of the embodiment of the present invention can make the scattering to light of the simulated atmosphere layer, so that light is through scattering
Can form the effect through atmosphere scattering after plate, utilize the light fixture of scatter plate of the present invention, the light that it sends is through scattering
Can simulate after plate through the daylight various effects after atmosphere scatters, thus allow one to experience sky in indoor
Sensation, improve Consumer's Experience.
Device embodiment described above is only schematically, and the wherein said unit illustrated as separating component can
To be or to may not be physically separate, the parts shown as unit can be or may not be physics list
Unit, i.e. may be located at a place, or can also be distributed on multiple NE.Can be selected it according to the actual needs
In some or all of module realize the purpose of the present embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Work in the case of, be i.e. appreciated that and implement.
Through the above description of the embodiments, those skilled in the art it can be understood that to each embodiment can
The mode adding required general hardware platform by software realizes, naturally it is also possible to pass through hardware.Based on such understanding, on
State the part that prior art contributes by technical scheme the most in other words to embody with the form of software product, should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD etc., including some fingers
Make with so that a computer equipment (can be personal computer, server, or the network equipment etc.) performs each and implements
The method described in some part of example or embodiment.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, it will be understood by those within the art that: it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent；
And these amendment or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a scattering device, it is characterised in that including:
Scatter plate, described scatter plate includes the incidence surface receiving light, and the exiting surface of emergent ray；
Described scatter plate also includes transparent medium, and the first kind scattering particles being dispersed in described transparent medium, wherein,
Described first kind scattering particles forms Rayleigh scattering to the light that the incidence surface through described scatter plate receives, described through first
The Rayleigh scattering light that type scattering particles is formed penetrates through the exiting surface of described scatter plate.
Scattering device the most according to claim 1, it is characterised in that
Also include that Second Type scattering particles, described Second Type scattering particles are dispersed in described transparent medium, described second
Type scattering particles forms Mie scattering to the light that the incidence surface through described scatter plate receives, described through Second Type scattering particles
The Mie scattering light formed penetrates through the exiting surface of described scatter plate.
Scattering device the most according to claim 1, it is characterised in that
Described first kind scattering particles is dispersed in described transparent medium with the first preset concentration.
4. according to the scattering device described in Claims 2 or 3, it is characterised in that
Described Second Type scattering particles is dispersed in described transparent medium with the second preset concentration.
Scattering device the most according to claim 4, it is characterised in that described first preset concentration with described second preset dense
The ratio of degree can adjust.
Scattering device the most according to claim 1 and 2, it is characterised in that
The incidence surface of described scatter plate and the exiting surface of described scatter plate are parallel to each other；Or
The incidence surface of described scatter plate and the exiting surface of described scatter plate form default angle.
Scattering device the most according to claim 1 and 2, it is, described transparent medium is liquid, or, described transparent
Medium is solid.
Scattering device the most according to claim 7, it is characterised in that
When described transparent medium is liquid, described first kind scattering particles, and/or, described Second Type scattering particles exists
Described transparent medium is formed stable lyosol.
Scattering device the most according to claim 2, it is characterised in that described first kind scattering particles comprises at least one
The particle of Rayleigh scattering effect can be produced；Described Second Type scattering particles comprises at least one can produce Mie scattering effect
Particle.
10. a light fixture, it is characterised in that include, according to the scattering device according to any one of claim 1-9, also including light
Source, the light that described light source sends outgoing after described scattering device scatters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605667.3A CN106195914A (en) | 2016-07-28 | 2016-07-28 | Scattering device and light fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605667.3A CN106195914A (en) | 2016-07-28 | 2016-07-28 | Scattering device and light fixture |
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| CN106195914A true CN106195914A (en) | 2016-12-07 |
Family
ID=57496354
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610605667.3A Pending CN106195914A (en) | 2016-07-28 | 2016-07-28 | Scattering device and light fixture |
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Application publication date: 20161207 |