CN107436525A - Scattering device and its manufacture method and light-emitting device, optical projection system and illuminator - Google Patents
Scattering device and its manufacture method and light-emitting device, optical projection system and illuminator Download PDFInfo
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- CN107436525A CN107436525A CN201610362446.8A CN201610362446A CN107436525A CN 107436525 A CN107436525 A CN 107436525A CN 201610362446 A CN201610362446 A CN 201610362446A CN 107436525 A CN107436525 A CN 107436525A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
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- General Physics & Mathematics (AREA)
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Abstract
The embodiment of the invention discloses a kind of scattering device and its manufacture method and light-emitting device, optical projection system and illuminator.Scattering device includes transparent inorganic thing substrate, including relative first surface and second surface, at least partially mat surface of second surface, the mat surface have multiple miniature depressions；The transition medium of mat surface, including the 3rd relative surface and the 4th surface are covered, the 3rd surface is in close contact with mat surface to form transition medium substrate interface, and the refractive index of transition medium meets：；Or,；The inclination angle of the miniature depression of substrate is, the refractive index of substrate is, the refractive index of transition medium is.Scattering device in the embodiment of the present invention has the less advantage of angle of scattering.
Description
Technical field
The present invention relates to illumination and display technology field, more particularly to a kind of scattering device and its manufacture method and lights
Device, optical projection system and illuminator.
Background technology
It is to realize a kind of conventional means of light source to produce stimulated light using LASER Excited Fluorescence powder in the prior art.For
Raising brightness（Energy density）, laser can be by lens focus on fluorescent material.However, due to laser beam collimation very
Height, therefore very small luminous point can be formed after focusing on, the energy density on this luminous point is very big, often beyond fluorescent material
Tolerance range and cause hot-quenching to go out.In order to solve this problem, it is positioned on laser optical path, is used using diffusion sheet in the prior art
In reducing its collimation, so as to expand the hot spot focused on fluorescent material.
The diffusion sheet often used in the prior art is as shown in Figure 1.Its processing method is that glass plate is surface roughened,
So as to cause the scattering to light.Specifically when realizing in order to reach more preferable dispersion effect, processing technology may be more complicated.Example
Such as, mat surface is formed using liquid corrosion glass surface, is then ground processing to the mat surface again further to control it
The depth of fluctuating.Except liquid corrosion method, it is also possible to which it is glass surface roughening so as to reaching the physical method such as to process using sandblasting
To scattering purpose.
It is appreciated that for each light, the inclination angle in its incident small face is bigger, then the angle scattered is got over
Greatly.If certain inclination angle is 0, i.e., no coarse state, then light can keep former direction to be emitted.So each small face is inclined
The size distribution at oblique angle, just determine the angle distribution of light beam after scattering.
Problem of the prior art is, wants to realize the angle distribution very little after scattering（That is the scattering of very little）, it is necessary to it is micro-
The inclination angle of facet is all controlled very little, i.e. glass surface should have the mat surface of fluctuating, and fluctuating very little again, this is very
Difficult.For projection application, laser facula needs to be controlled in 1.5-4mm, and it is left at 5 degree now to scatter half-angle minimum
The right side, current diffusion sheet can meet requirement.But applied for illumination, often require that hot spot is necessarily less than 1mm, even
Less than 0.5mm, now scattering half-angle needs to be less than 3 degree, and even less than 1.5 degree, i.e. diffusion sheet will be accomplished parallel laser expansion
1.5 degree of a small light cone is scattered to, this control for diffusion sheet surface topography requires very high, is that current technique is difficult to
Reach.
The content of the invention
The present invention solves the technical problem of provide a kind of less scattering device of angle of scattering and its manufacture method and
Light-emitting device, optical projection system and illuminator.
The embodiment of the present invention provides a kind of scattering device, including transparent inorganic thing substrate, including relative first surface with
Second surface, at least partially mat surface of second surface, the mat surface have multiple miniature depressions；Cover the transition of mat surface
Medium, including the 3rd relative surface and the 4th surface, the 3rd surface are in close contact with mat surface to form transition medium-substrate
Interface, the refractive index of transition medium meet：
；Or,
；
The inclination angle of the miniature depression of substrate is, the refractive index of substrate is, the refractive index of transition medium is。
Preferably,,Degree, and。
Preferably, the 4th surface of transition medium is a plane or cambered surface.
Preferably, transparent inorganic thing is glass, and transition medium is inorganic colloid or organic colloid.
The embodiment of the present invention also provides a kind of light-emitting device, including light emitting source and above-mentioned scattering device；What light emitting source was sent
Light beam is incident in scattering device, and the light beam is incident on the hot spot covering transition medium on scattering device.
The embodiment of the present invention also provides a kind of optical projection system, including above-mentioned light-emitting device.
The embodiment of the present invention also provides a kind of illuminator, including above-mentioned light-emitting device.
The embodiment of the present invention also provides a kind of manufacture method of scattering device, including：Step 1: provide a transparent inorganic thing
Substrate, the substrate include relative first surface and second surface, at least partially mat surface of second surface, the coarse mask
There are multiple miniature depressions；Step 2: the transition medium of liquid is coated on mat surface so that it is coarse that the transition medium covers this
Face, to cause transition medium to include the 3rd surface, the 3rd surface is in close contact with mat surface to form transition medium-substrate circle
Face, the refractive index of transition medium meet：
；Or,
；
The inclination angle of the miniature depression of substrate is, the refractive index of substrate is, the refractive index of transition medium is；It is Step 3: solid
Change transition medium.
Preferably, step 2 includes：The transition for being coated liquid on mat surface using spin-coating method, czochralski method or print process is situated between
Matter.
Preferably, also include between step 2 and step 3：By the second surface of substrate upwards and horizontal, make liquid
Transition medium levelling under gravity.
Compared with prior art, the embodiment of the present invention includes following beneficial effect：Scattering device in the embodiment of the present invention
Angle of scattering it is smaller and more controllable.
Brief description of the drawings
Fig. 1 is the structural representation of diffusion sheet in the prior art；
Fig. 2 a and 2b is the structural representation of one embodiment of scattering device in the embodiment of the present invention；
Fig. 3 is the structural representation of another embodiment of scattering device in the embodiment of the present invention；
Fig. 4 a are the structural representations of another embodiment of scattering device in the embodiment of the present invention；
Fig. 4 b are the enlarged drawing of s positions in Fig. 4 a.
Embodiment
For the sake of quoting and understanding, the technical term that hereafter and in accompanying drawing uses is described as follows：
The embodiment of the present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
Embodiment one
Refer to the structural representation that Fig. 2 a and Fig. 2 b, Fig. 2 a and 2b is one embodiment of scattering device in the embodiment of the present invention
Figure.As illustrated in figures 2a and 2b, scattering device 200 includes transparent inorganic thing substrate 210（Shadow region）With transition medium 220（Without the moon
Shadow zone）.
Transparent inorganic thing substrate 210, including relative first surface 211 and second surface 212.In transparent inorganic thing substrate
Transparent refer to that the base material treats the just transparent, low absorption of scattering；Inorganic matter then has a variety of selections, such as
Silica（Quartz）, aluminum oxide, titanium oxide etc., it is also possible to the mixture of a variety of inorganic matter compositions, such as glass.First surface
For plane, second surface 212 is mat surface, and the mat surface has multiple miniature depressions 213.In general, no matter chemical attack
Or physics polishing, the shape of miniature depression is all irregular, can regard a series of small different angles as
The set on inclined-plane, triangle is simplified to illustrate in figure.In other embodiments, second surface 212 can also only be partly
Mat surface.
Transition medium 220 covers the mat surface of substrate 210, and transition medium 220 includes the 3rd surface 221, the 3rd surface 221
It is in close contact with the mat surface of substrate 210 to form transition medium-substrate interface.In the present embodiment, transition medium 220 also includes
Fourth surface 222 relative with the 3rd surface, the 4th surface are a plane, and parallel with first surface 211, and the plane is simultaneously unlimited
It is set to smooth flat, and being also contemplated by surface has the almost plane of microrelief.
Light can be from the mat surface incidence substrate of substrate, can also be from the first surface incidence substrate of substrate, therefore light
Line is scattered that device has following two situations：
（1）As shown in Figure 2 a, light L1 does not have transition medium 220 from the mat surface incidence substrate of substrate 210 in substrate 210
When, light L1 is incident to air-substrate interface.Assuming that the inclination angle of miniature depression incident light L1 is, substrate refractive index is, then light L1 is relative to the angle of light L1 deviations after this surface refraction, the light
Line can also reflect once again in the first surface of substrate 210, and it is light L2 to be emitted, light L2 relative to light L1 deviations angle
Spend and be.The inclination angle of miniature depressionThe angle on inclined-plane and interarea for miniature depression, interarea are exactly
Macroscopical face where multiple miniature depressions are common on mat surface, as shown in the A in Fig. 2 a.Interarea, which represents scattering device and played, to be dissipated
The face of effect is penetrated, it can be plane or cambered surface（Such as the mat surface processed in cambered surface, its interarea are exactly
Cambered surface）.When interarea is cambered surface, the inclination angle of miniature depressionRefer to the miniature depression and the principal plane locations where it
The angle of section.Because light L1 is usually to be normally incident in interarea, so the inclination angle of miniature depressionAlso it is equal to light
Line L1 is incident in the incidence angle on miniature depression inclined-plane.For the most frequently used scattering device, interarea is substantially flat with first surface
OK.
When covering transition medium 220 in substrate 210, light L1 is incident to transition medium-substrate interface.Assuming that transition
Medium refraction index is, and, then light L1 is reflected to the right in transition medium-substrate interface, relative to light after refraction
The angle of line L1 deviations is, the light can also reflect one again in the first surface of substrate 210
It is secondary, and it is light L3 to be emitted, light L3 is relative to the angle of light L1 deviations.To,
Then require
………………①
Assuming that, then light L1 is reflected to the left in transition medium-substrate interface, relative to light L1 deviations after refraction
Angle be, the light can also reflect once again in the first surface of substrate 210, and go out
Penetrate and be relative to the angle of light L1 deviations for light L4, light L4.To, then require
………………②
1. 2. formula is understood composite type, and light L1 meets from the mat surface incidence substrate of substrate 210, the refractive index of transition medium
……………③
When, light L1 can reduce angle of scattering by scattering device.If for example,,,, then
Degree,Degree；It can be seen that relative to prior art, light L1 reduces 80% or so by the scattering half-angle that scattering device scatters.
For another example, if,,, thenDegree,Degree；It can be seen that relative to prior art, light
L1 reduces 80% or so by the scattering half-angle that scattering device scatters.
（2）As shown in Figure 2 b, light L1 ' does not have from the first surface vertical incidence substrate of substrate 210 in substrate 210
During transition medium 220, light L1 ' is incident to substrate-air interface.Assuming that the inclination angle of miniature depression incident light L1 ' is
, substrate refractive index is, then light L1 ' is relative to the angle of light L1 ' deviations after this surface refraction。
When covering transition medium 220 in substrate 210, light L1 ' is incident to substrate-transition medium interface.Assumed
Crossing medium refraction index is, and, then light L1 ' is reflected to the right at substrate-transition medium interface, after refraction relative to
The angle of light L1 ' deviations is, the light can also be on the 4th surface of transition medium 220 again
Reflect once, and it is light L3 ' to be emitted, light L3 ' is relative to the angle of light L1 ' deviations.If
Will, then require
…………④
Assuming that, then light L1 ' is reflected to the left at substrate-transition medium interface, inclined relative to light L1 ' after refraction
The angle of folding is, the light can also reflect one again on the 4th surface of transition medium 220
It is secondary, and it is light L4 ' to be emitted, light L4 ' is relative to the angle of light L1 ' deviations.To, then require
…………⑤
4. 5. formula is understood composite type, and light L1 ' meets from the first surface incidence substrate of substrate 210, the refractive index of transition medium
………⑥
When, light L1 ' can reduce angle of scattering by scattering device.If for example,,,, thenDegree,Degree；It can be seen that relative to prior art, light L1 ' is reduced by the scattering half-angle that scattering device scatters
81% or so.For another example, if,,, thenDegree,Degree；It can be seen that relative to existing skill
Art, light L1 ' reduce 83% or so by the scattering half-angle that scattering device scatters.
In summary, the scheme of the proposition of the present embodiment is that transition medium, transition are covered on the mat surface of substrate 210
Medium and mat surface are in close contact, and when the refractive index of transition medium 220 meets any in following two inequality, scattering device
The angle of scattering for treating scattering light can be reduced relative to prior art：
……………③；Or,
………⑥；
Wherein, the inclination angle of the miniature depression of substrate is, substrate refractive index is, transition medium refractive index is。
It is computed and experimental verification, it is preferable that substrate refractive index meets, substrate roughness face it is multiple miniature recessed
Sunken inclination angle meetsDegree, and the refractive index of transition medium meets.Now, empirical tests, it is public
3. and 6. formula will be met simultaneously.As can be seen here, as long as selecting suitable transition medium and base material so that both reflect
The absolute value of the difference of rate is less than some value, and no matter light from which direction incidence of scattering device, can obtain angle of scattering reduction
Effect.
Also resided in addition to effectively reducing angle of scattering, the advantages of the present embodiment so that angle of scattering becomes more controllable.
Because angle of scattering is except the angle with miniature depressionHave outside the Pass, the refractive index of refractive index, substrate also with transition medium has
Close, it is possible to by selecting the material of transition medium and substrate, to control the angle of scattering of scattering device.Furthermore it is also possible to
Scattering particles are mixed in transition medium, the angle of scattering of scattering device is finely adjusted by controlling the concentration of scattering particles.
The present embodiment is also had the advantage that, exactly after transition medium has been used, mat surface is located in scattering device
Portion, the 4th surface of the upper surface of scattering device, i.e. transition medium is plane, can thus be set on the 4th surface anti-reflection
Film, to improve the transmitance of laser.And the upper surface of diffusion sheet of the prior art is mat surface, even if using plating anti-reflection film,
Antireflective effect is also had a greatly reduced quality.
Specifically, transition medium can be that to treat scattering light be transparent colloid, and colloid is liquid when referring to coating, after
To become the material of solid after solidification process.Transition medium can use inorganic colloid, such as the inorganic glue of silicates
Water, organic colloid, such as transparent silica gel can also be used.Inorganic colloid is advantageous in that stability more relative to organic colloid
It is good, and hard films are formed after solidifying, ash will not be stained with long-term use.Also, inorganic colloid due to after solidification hardness it is high, more
Easily plating anti-reflection film.But because thermal coefficient of expansion is different between inorganic colloid and substrate, both are easy during heating/cooling
Disengage and even come off, therefore, the material that inorganic glue choosing of fine quality is matched using thermal coefficient of expansion with substrate.Organic colloid index lattice are just
Preferably, easily operation；And organic colloid has certain elasticity, so even if thermal coefficient of expansion mismatches with substrate, organic gel
The elasticity of matter in itself can also discharge stress caused by mismatch, so as to ensure that between organic colloid and substrate be not in de-
The phenomenon opened.Transition medium can also use transparent inorganic thing material, such as glass, can be poured by the way that the glass is melted
On the mat surface of substrate；Or transition medium uses a plate glass, with the method for heating pressurization by the plate glass pressure
Onto the mat surface of substrate, the mat surface after surface of plate glass softening with substrate forms transition medium-substrate interface, after cooling
Form an entirety.
Embodiment two
Referring to Fig. 3, Fig. 3 is the structural representation of another embodiment of scattering device in the embodiment of the present invention.As shown in figure 3,
Scattering device 300 includes transparent inorganic thing substrate 310（Shadow region）With transition medium 320（Unshaded area）.Substrate 310 includes phase
To first surface 311 and second surface 312, second surface 312 is mat surface.Transition medium 320 covers the coarse of substrate 310
Face, transition medium 320 include relative the 3rd surface 321 and the 4th surface 322.
Include in place of the difference of the present embodiment and embodiment illustrated in fig. 2：
4th surface 322 of transition medium is a cambered surface, specially a convex surface, and the convex surface is equivalent to lens.Scattering device 300 can
To regard two optical elements using B faces as segmentation as, the above is convex lens, and here is diffusion sheet, and the two optical elements can be with
Regard separate as, and independently work.For example, the light that spot light O is sent, first convex by this behind the 4th surface 322
The collimation of face 322 is directional light, and these directional lights are incident in mat surface, i.e. transition medium-substrate interface, and by scattering from rough surface,
It is finally a branch of subparallel scattering light from the outgoing of first surface 311 of substrate, this can regard as two optical elements successively
Independent action is in the result of light.
In fact, the inclination angle of the miniature depression of the diverse location of substrate roughness face 312 is different, therefore mat surface is to light
Deviation is random, is not that each light is all controllable, and mat surface is exactly each beamlet is diffused into a light cone
（The result of multiple miniature depression effects）.And the diverse location on the 4th surface 322 is controllable to the deviation of light, then it with
The result that mat surface is put together is exactly that the effect of a hot spot diffusion is superimposed in controllable optical field distribution, and the size of diffusion takes
Certainly in mat surface, and it is unrelated with the 4th surface.Therefore, the present invention is not defined to the 4th surface, and the 4th surface can be
The surface of the other forms such as plane, cambered surface, curved surface or part curvature portion cambered surface.
For example, in the present embodiment, the light that spot light O is sent becomes directional light through the 4th surface 322, and the directional light is by thick
Dispersion effect is superimposed after matte 312, i.e., each beamlet becomes a light cone, and the chief ray of each light cone is still parallel
（This is the result of the 4th surface action）, and the cone angle of each light cone depends on multiple miniature depressions（This is mat surface effect
As a result）.The present embodiment sees that the first surface 311 of parallel rays substrate is incident in turn, then through mat surface and the 4th surface 322
Outgoing, its effect can still regard the result of two optical element independent actions as, i.e., each beamlet is first through mat surface
A light cone is diffused into, then a hot spot is focused into through the 4th surface.
Embodiment three
From the analysis in embodiment one, transition medium is not necessarily intended to fill up miniature depression, as long as and insert miniature depression,
And it is plane that, which there is part the upper surface for inserting the transition medium of miniature depression, the light L1 of the incident plane can be by scattering device
Reduce angle of scattering.Therefore, the present invention also provides another embodiment.Fig. 4 a are referred to, Fig. 4 a are that dress is scattered in the embodiment of the present invention
The structural representation for another embodiment put.As shown in fig. 4 a, scattering device 400 includes transparent inorganic thing substrate 410（Shade
Area）With transition medium 420（Unshaded area）.
Transparent inorganic thing substrate 410 includes relative first surface 411 and second surface 412, and second surface 412 is coarse
Face, the mat surface have multiple miniature depressions.The detailed description of transparent inorganic thing substrate 410 is with reference to embodiment one.
Transition medium 420 is located in multiple miniature depressions of the mat surface of substrate 410 and miniature recessed without departing from what it was located at
Fall into, the transition medium 420 is in close contact with miniature depression inwall to form transition medium-substrate interface.Refer to Fig. 4 b, Fig. 4 b
For the enlarged drawing of s positions in Fig. 4 a.At least partially plane of the upper surface of transition medium in miniature depression（Shown in B）.
Light can be from the mat surface incidence substrate of substrate, can also be from the first surface incidence substrate of substrate, therefore light
Line is scattered that device has following two situations：
（1）As shown in Figure 4 b, light L1 is from the mat surface incidence substrate of substrate, when not having transition medium in substrate, light L1
It is incident to air-substrate interface.Assuming that the inclination angle of miniature depression incident light L1 is, substrate refractive index is, then light
Line L1 is relative to the angle of light L1 deviations after this surface refraction, the light can also be
The first surface of substrate reflects once again, and it is light L2 to be emitted, and light L2 is relative to the angle of light L1 deviations.The inclination angle of miniature depressionFor the inclined-plane C and plane B of miniature depression angle.Due to light L1
It is relative to plane B vertical incidence, so the inclination angle of miniature depressionAlso being equal to light L1, to be incident in miniature depression oblique
Face C incidence angle.For the most frequently used scattering device, plane B and first surface are almost parallel.
When transition medium is provided with miniature depression, light L1 is incident to transition medium-substrate interface through plane B.It is false
If transition medium refractive index is, and, then light L1 is reflected to the right in transition medium-substrate interface, phase after refraction
Angle for light L1 deviations is, the light can also reflect again in the first surface of substrate
Once, and outgoing is light L3, and light L3 is relative to the angle of light L1 deviations.To, then require
………………①
Assuming that, then light L1 is reflected to the left in transition medium-substrate interface, relative to light L1 deviations after refraction
Angle be, the light can also reflect once again in the first surface of substrate, and be emitted and be
Light L4（It is not shown）, light L4 is relative to the angle of light L1 deviations.To, then
Ask
………………②
1. 2. formula is understood composite type, and light L1 meets from the mat surface incidence substrate of substrate, the refractive index of transition medium
……………③
When, light L1 can reduce angle of scattering by scattering device 400.
（2）Similarly, light meets from the first surface incidence substrate of substrate, the refractive index of transition medium
………⑥
When, light can reduce angle of scattering by scattering device.
In summary, when the refractive index of transition medium 420 meets any in following two inequality, scattering device 400
The angle of scattering for treating scattering light can be reduced relative to prior art：
……………③；Or,
………⑥；
Wherein, the inclination angle of the miniature depression of substrate is, substrate refractive index is, transition medium refractive index is。
It is computed and experimental verification, it is preferable that substrate refractive index meets, substrate roughness face it is multiple miniature recessed
Sunken inclination angle meetsDegree, and the refractive index of transition medium meets.Now, empirical tests, it is public
3. and 6. formula will be met simultaneously.As can be seen here, as long as selecting suitable transition medium and base material so that both reflect
The absolute value of the difference of rate is less than some value, and no matter light from which direction incidence of scattering device, can obtain angle of scattering reduction
Effect.
In the present embodiment, when being not provided with transition medium 420, the light that light L1 is emitted through substrate 410 is L2, micro-
After being provided with transition medium in type depression, it is L3 to be incident in light of the light L1 of the plane through transition medium and substrate outgoing,
Angle of scattering reduces.Also, in the present embodiment, transition medium is so two neighboring miniature recessed without departing from the miniature depression that it is located at
Projection between falling into serves the effect of protective separation to transition medium, avoid transition medium directly contacted with other elements and
The problem of damage.
Preferably, the upper surface of the transition medium in all miniature depressions is plane（It is approximately plane to cover）, and
At grade, it is relatively simple to make.In addition, in the present embodiment, transition medium is located in miniature depression, other
It can also be substituted in embodiment, transition medium is only positioned on the projection between two neighboring miniature depression.
The embodiment of the present invention also provides a kind of light-emitting device, including light emitting source and scattering device, and the scattering device can have
There are the structure and function in the various embodiments described above.Light emitting source can include light emitting diode, laser diode or other any
Element or the element combination that can be lighted.The light beam that light emitting source is sent is incident in scattering device, and the light beam is incident on scattering dress
The hot spot covering transition medium put, therefore the light beam can scatter through the scattering device, and relative to prior art, have smaller
Angle of scattering.The embodiment of the present invention also provides a kind of optical projection system, including above-mentioned light-emitting device.The optical projection system can use each
Kind shadow casting technique, such as liquid crystal display（LCD, Liquid Crystal Display）Shadow casting technique, digital light processor
（DLP, Digital Light Processor）Shadow casting technique.The embodiment of the present invention also provides a kind of illuminator, including above-mentioned
Light-emitting device.The illuminator can be torch for illumination, auto lamp illumination, stage lighting illumination etc..
Example IV
Corresponding to embodiment one and embodiment two, the embodiment of the present invention also provides a kind of manufacture method of scattering device, this method
Including：
Step 1: providing a transparent inorganic thing substrate, the substrate includes relative first surface and second surface, second surface
At least partially mat surface, the mat surface have multiple miniature depressions；
The method for making mat surface has a variety of, etch, sand-blast, chemical grinding method etc..Etch is exactly rotten using corrosive liquid
At least part of substrate surface is lost, the surface is formed multiple irregular miniature depressions.Sand-blast is existed using abrasive blast equipment
Substrate surface sandblasting, by the removal of the surface imperfection, some materials form multiple miniature depressions.Chemical grinding method is that use has
Corrosive grinding agent carries out mechanical lapping to substrate surface, the surface is formed multiple irregular miniature depressions.
Preferably, the inclination angle of the miniature depression in substrate roughness face meetsDegree.
Step 2: the transition medium of liquid being coated on the mat surface of substrate so that the transition medium covers the mat surface,
To cause transition medium to include relative the 3rd surface and the 4th surface, the 3rd surface is in close contact with mat surface to form transition
Medium-substrate interface, the refractive index of the transition medium meet：
……………③；Or,
………⑥；
Wherein, the inclination angle of the miniature depression of substrate is, substrate refractive index is, transition medium refractive index is。
Spin-coating method, czochralski method or print process can be used to coat the transition medium of liquid on the mat surface of substrate.Spin coating
Method be by substrate fix on a spinstand, substrate it is coarse upwardly, the transition medium of dropping liquid state on mat surface, then at a high speed
Rotation, is thrown out transition medium unnecessary in substrate with centrifugal force；After rotation stops, it can just cause transition medium covering substrate
Mat surface.Czochralski method is exactly that substrate is dipped vertically into the transition medium of liquid, then vertical lifting is got up so that transition is situated between
Matter covers the mat surface of substrate.Print process is that transition medium is printed in the second surface of substrate using the mode of silk-screen printing.
Preferably, met using refractive indexBase material, refractive index meet's
Transition medium material.
Step 3: solidification transition medium.
After the transition medium that liquid is coated on the mat surface of substrate, the transition medium of the liquid is solidified.Gu
It can be the modes such as heat cure, ultra-violet curing or normal temperature cure to change transition medium, be specifically dependent upon the characteristic of transition medium.
Preferably, can also include between step 2 and step 3：By the second surface of substrate upwards and horizontal, make liquid
The transition medium of state levelling under gravity, to cause the 4th surface of transition medium as a plane.
Embodiment five
Corresponding to embodiment three, the embodiment of the present invention also provides a kind of manufacture method of scattering device, and this method includes：
Step 1: providing a transparent inorganic thing substrate, the substrate includes relative first surface and second surface, second surface
At least partially mat surface, the mat surface have multiple miniature depressions；
The method for making mat surface has a variety of, etch, sand-blast, chemical grinding method etc..Etch is exactly rotten using corrosive liquid
At least part of substrate surface is lost, the surface is formed multiple irregular miniature depressions.Sand-blast is existed using abrasive blast equipment
Substrate surface sandblasting, by the removal of the surface imperfection, some materials form multiple miniature depressions.Chemical grinding method is that use has
Corrosive grinding agent carries out mechanical lapping to substrate surface, the surface is formed multiple irregular miniature depressions.
Preferably, the inclination angle of the miniature depression in substrate roughness face meetsDegree.
Step 2: the transition medium of liquid is coated on the mat surface of substrate so that at least part transition medium is positioned at thick
It is in close contact in multiple miniature depressions of matte and without departing from the miniature depression that it is located at, the transition medium with miniature depression inwall
To form transition medium-substrate interface, at least partially plane of the upper surface of the transition medium；And the refractive index of transition medium
Meet：
……………③；Or,
………⑥；
Wherein, the inclination angle of the miniature depression of substrate is, substrate refractive index is, transition medium refractive index is。
Spin-coating method, czochralski method or print process can be used to coat the transition medium of liquid on the mat surface of substrate.For example,
Spin-coating method be by substrate fix on a spinstand, substrate it is coarse upwardly, the transition medium of dropping liquid state on mat surface, then
Rotate at a high speed, thrown out transition medium unnecessary in substrate with centrifugal force.Rotary speed is faster, the remaining mistake on mat surface
It is fewer to cross medium, as long as being higher than some rotating speed, after stopping operating, height can of the transition medium in miniature depression is less than
Some value.
Preferably, met using refractive indexBase material, refractive index meet's
Transition medium material.
Step 3: solidification transition medium.
After the transition medium that liquid is coated on the mat surface of substrate, the transition medium of the liquid is solidified.Gu
It can be the modes such as heat cure, ultra-violet curing or normal temperature cure to change transition medium, be specifically dependent upon the characteristic of transition medium.
Preferably, can also include between step 2 and step 3：By the second surface of substrate upwards and horizontal, make liquid
The transition medium of state levelling under gravity, make it that the upper surface of the transition medium in all miniature depressions is plane,
And at grade.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, it is included within the scope of the present invention.
Claims (10)
- A kind of 1. scattering device, it is characterised in that including：Transparent inorganic thing substrate, including relative first surface and second surface, at least partially mat surface of second surface should Mat surface has multiple miniature depressions；Cover the transition medium of the mat surface, including the 3rd relative surface and the 4th surface, the 3rd surface with it is described coarse Face is in close contact to form transition medium-substrate interface, and the refractive index of the transition medium meets：；Or,；The inclination angle of the miniature depression of the substrate is, the refractive index of the substrate is, the refractive index of the transition medium is。
- 2. scattering device according to claim 1, it is characterised in that：,Degree, and。
- 3. scattering device according to claim 1 or 2, it is characterised in that：4th surface of the transition medium is one flat Face or cambered surface.
- 4. scattering device according to claim 1 or 2, it is characterised in that：The transparent inorganic thing is glass, the transition Medium is inorganic colloid or organic colloid.
- A kind of 5. light-emitting device, it is characterised in that the scattering dress including light emitting source and as any one of Claims 1-4 Put；The light beam that the light emitting source is sent is incident in the scattering device, and the light beam is incident on the hot spot on the scattering device Cover the transition medium.
- 6. a kind of optical projection system, it is characterised in that including light-emitting device as claimed in claim 5.
- 7. a kind of illuminator, it is characterised in that including light-emitting device as claimed in claim 5.
- A kind of 8. manufacture method of scattering device, it is characterised in that including：Step 1: providing a transparent inorganic thing substrate, the substrate includes relative first surface and second surface, second surface At least partially mat surface, the mat surface have multiple miniature depressions；Step 2: the transition medium of liquid is coated on the mat surface so that the transition medium covers the mat surface, to cause Transition medium includes the 3rd surface, and the 3rd surface is in close contact to form transition medium-substrate interface with the mat surface, described The refractive index of transition medium meets：；Or,；The inclination angle of the miniature depression of the substrate is, the refractive index of the substrate is, the refractive index of the transition medium is；Step 3: solidify the transition medium.
- 9. manufacture method according to claim 8, it is characterised in that step 2 includes：Using spin-coating method, czochralski method or print Brush method coats the transition medium of liquid on the mat surface.
- 10. manufacture method according to claim 8 or claim 9, it is characterised in that：Also include between step 2 and step 3： By the second surface of the substrate upwards and horizontal, the transition medium of liquid levelling under gravity is made.
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| CN201610362446.8A CN107436525A (en) | 2016-05-27 | 2016-05-27 | Scattering device and its manufacture method and light-emitting device, optical projection system and illuminator |
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| CN201610362446.8A CN107436525A (en) | 2016-05-27 | 2016-05-27 | Scattering device and its manufacture method and light-emitting device, optical projection system and illuminator |
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| CN102576098A (en) * | 2009-09-04 | 2012-07-11 | 住友化学株式会社 | Light-diffusing film, manufacturing method therefor, light-diffusing polarizing plate, and liquid-crystal display device |
| CN204256203U (en) * | 2014-11-14 | 2015-04-08 | 深圳市绎立锐光科技开发有限公司 | A kind of even photo structure |
| US20160011342A1 (en) * | 2013-03-07 | 2016-01-14 | The Technology Partnership Plc | Embedded Diffuser Structure |
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- 2016-05-27 CN CN201610362446.8A patent/CN107436525A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005316178A (en) * | 2004-04-28 | 2005-11-10 | Hitachi Chem Co Ltd | Optical element, its manufacturing method and surface light source device |
| CN102576098A (en) * | 2009-09-04 | 2012-07-11 | 住友化学株式会社 | Light-diffusing film, manufacturing method therefor, light-diffusing polarizing plate, and liquid-crystal display device |
| US20160011342A1 (en) * | 2013-03-07 | 2016-01-14 | The Technology Partnership Plc | Embedded Diffuser Structure |
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Application publication date: 20171205 |