CN103257392A - Light guiding body covered with diffusion barrier layer - Google Patents
Light guiding body covered with diffusion barrier layer Download PDFInfo
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- CN103257392A CN103257392A CN2013101186215A CN201310118621A CN103257392A CN 103257392 A CN103257392 A CN 103257392A CN 2013101186215 A CN2013101186215 A CN 2013101186215A CN 201310118621 A CN201310118621 A CN 201310118621A CN 103257392 A CN103257392 A CN 103257392A
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Abstract
A light guiding body covered with a diffusion barrier layer comprises a transparent solid geometry and an optical film layer and is characterized in that the optical film layer covers an outer surface, with a thickness larger than 1mm, of the transparent solid geometry. At least one outer surface of the solid geometry is an incident plane, at least one outer surface of the solid geometry is a light outlet plane, the solid geometry at least comprises the optical film layer which is made of submicron or nanometer particle dielectric film materials, and the thickness of the film layer is 91nm to 5mm. The light guiding body covered with the diffusion barrier layer aims at covering optical films which are matched with outer surfaces of solid geometries with different optical functions through a publicly known film coating method to enable production of the light guiding body with higher efficiency and more functions to be possible. The light guiding body can not only be used through matching with an LED light source, but also be used through matching with various other light sources in an illuminating lamp, a display lamp and a back light source, and the light guiding body can be made into a purifying lamp, a sterilization lamp, a phototherapy lamp, a plant illuminating lamp and the like. With the development of an electronic thin film technology, the light guiding body will create more business opportunities for light guiding body application products.
Description
Technical field
The present invention relates to a kind of light conductor, especially a kind of light conductor and method for making that is coated with the diffusion rete can be widely used in showing, each technical fields relevant with area source such as illumination, backlight.
Background technology
Disclosed by Chinese invention patent CN100508222C: the capacity usage ratio based on the area source device of light emitting diode that has now occurred is still lower.On the one hand be since light emitting diode manufacturing technology itself also in continuous development, its power efficiency (Wall-Plug Efficiency) space that still has greatly improved; On the other hand LED package is become the secondary packaging efficiency (abbreviation secondary efficiency) of practical area source device also lower, and the leaded light efficient of the light guide plate in the light conductor low be a major reason.The leaded light definitions of efficiency of light guide plate is for accounting for the number percent of the total light flux that is coupled into light guide plate from total effective luminous flux of light guide plate bright dipping interarea outgoing.The data that disclose among the technology publishing documents TP29 of Lumileds Lighting company according to the U.S., a kind of secondary efficiency that designs based on the area source of large-power light-emitting diodes of the said firm is preferably 50%, and wherein the leaded light efficient of light guide plate is about 60%.
Leaded light efficient depends mainly on the general structure of light guide plate and scattering principle and the structure of scattering machine preparative layer, mentions the leaded light efficient of traditional light guide plate among the United States Patent (USP) U.S.Pat.No.5396350 and has only 10%-20%.In this part patent and other several parts of patent U.S.Pat.No.5461547, U.S.Pat.No.5359691, U.S.Pat.No.5854872, proposed respectively different light guide plate with and scattering mechanism layer structure, and directivity and the leaded light efficient of light guide plate emergent light made improvement in varying degrees.Yet, document " Highly-efficient backlight for liquid crystal display having no optical films " according to last the 83rd phase of academic journal APPLIED PHYSICS LETTERS, the highest level of the leaded light efficient of existing light guide plate is merely able to reach 60%, and its scattering machine preparative layer is the reflection microprism array.The invalid bright dipping of this light guide plate still less and has realized better control to the rising angle of effective bright dipping; But it does not still exist leaded light efficient high and make problems such as difficulty, cost height.Existing light guide plate at primary source design all is at light guide plate interarea arrangement certain scattering machine preparative layer relative with the outgoing interarea, utilizes light to incide that scattering unit changes original reflection paths and from the outgoing of outgoing interarea.Although can maximize leaded light efficient by optimal design scattering machine preparative layer and scattering unit, but be invalid emergent light owing to light inevitably can form from the interarea transmission outgoing relative with the outgoing interarea, so there is the upper limit of a principle in its leaded light efficient and can not reaches higher.
Present light conductor only is confined to the light guide plate of tabular body, the leaded light technology all is to make of mechanical engraving, printing net-point, laser engraving, special light conducting plate structure etc., still exist complex manufacturing technology, cost height, cost performance low, be difficult to break through the above-mentioned principle leaded light efficient upper limit, tabular light conductor is that the light guide plate application surface also is subjected to certain restriction simultaneously.
Summary of the invention
The present invention is directed to above deficiency, according to geometrical optics, physioptial transmission, refraction, principle of reflection and new electric thin material and thin film preparation process technology rapid development, the raising illumination and the color developing that have proposed a kind ofly to implement conveniently, can be by a relatively large margin, manufacture craft is simple, cost is low, cost performance is high, and also has environmental protection, sterilization, health care, antistatic, multi-functional light conductor and the method for making that is coated with optical film.
The present invention implements by following technical proposals
A kind of light conductor that is coated with the diffusion rete, it comprises transparent solid solid 1, optical film 2, it is characterized in that:
Described optical film 2 covers thickness〉transparent solid solid 1 outside surface of 1mm; Solid solid 1 refers to the three-dimensional thing that the space of being filled by entity is real space (permitted super, yellow lead write 2002 08 month the 1st edition " three-dimensional composition " P10 page or leaf).
Described solid solid 1: having an outside surface at least is the plane of incidence 3, and having an outside surface at least is exiting surface 4; The light that the plane of incidence 3 refers to light source 6 incides the outside surface of solid solid 1 inside.Exiting surface 4 refers to the light that incides solid solid 1 inside from the outside surface of solid solid 1 inner outgoing.
On the outside surface of described solid solid 1, contain the deielectric-coating material optical film 2 of one deck sub-micron or nano particle at least, thicknesses of layers is at 91nm-5mm.
Because any optical film all can produce loss to light, thereby has reduced luminescence efficiency and the display performance of exiting surface 4.In order to reduce the loss of optical film light, particularly to the absorption loss of light, can make the very optical film 2 of fractional value of absorptivity by existing known technology, be applied on the optical device, the test result of the optical thin film absorptivity that discloses as journal of Zhejiang university (natural science edition) P536 page or leaf (the 23rd volume in July, 1989 the 4th phase, " absorptivity and the calibration thereof of photothermal deflection spectroscopy technology for detection optical film " Chen Wenbin, Shi Baixuan, yellow-study ripple):
Particularly (Science Press publishes the 1st edition (Liechtenstein) H.K. pul Ke Er work May in 1988 to the Medium Optics membrane material as " coating film on glass ", Zhong Yongan, Xie Yushen, Wu give seemingly and translating) data that disclose of P356 page or leaf: the fundamental characteristics of Medium Optics membrane material is in the relevant range of spectrum, and it absorbs very low (α＜10
3Cm
-1).Therefore optical film 2 of the present invention is optical films of selecting for use the Medium Optics membrane material to make, presents α＜10 when visible light
3Cm
-1The low numerical value absorption coefficient of light, can satisfy the requirement of various different light conductors substantially.The material of optical medium film and manufacturing technology are in institution of higher education's teaching material " thin film technique " (October in 1991 the 1st edition, Wang Liheng, Huang Yuntian, Zheng Haitao writes, publishing house of Tsing-Hua University), " optical thin film " (published in 1976, " optical thin film " write group and write, the Shanghai People's Press), " optical film technique " (October in 2005 the 1st edition, Lu Jinjun, LIU WEIGUO is write, publishing house of Northwestern Polytechnical University), " novel electron membraneous material " (September in 2002 the 1st edition, Chen Guanghua, Deng Jinxiang etc. write, Chemical Industry Press), " membrane science and technical manual " (March in 1991 the 1st edition, the Tian Minbo of Tsing-Hua University, the Liu De of Shenyang vacuum technique research institute makes compiling, China Machine Press) introduction is in detail arranged openly, no longer repeat.Purpose of the present invention is that the Medium Optics membrane material is directly overlayed on the outside surface of solid solid 1, makes functional optical dielectric film layer.Another purpose is that invention a kind ofly is scattered in the optical medium membrane material in the polymkeric substance of transparent epoxy resin or transparent silicon resin parent by different weight ratios, cover on the outside surface of solid solid 1, make solid state optics medium thick film layer through being solidificated on solid solid 1 outside surface.
The functional optical dielectric film layer that optical film of the present invention is made up of the Medium Optics membrane material more than one deck.The optical thickness of its rete is that the odd-multiple of 91nm is to the odd-multiple of 195nm.
The present invention is through optimizing solid state optics medium thick film layer or the functional optical dielectric film layer that described optical film 2 refers to a kind of nano titanium oxide, modifying titanium dioxide, silicon dioxide or lightweight barium sulphate, and the thickness of optical film is in the thick film layers of 0.01mm～5mm.
Core of the present invention is to substitute traditional light guide plate with the light conductor that is coated with optical film 2, therefore need make describing in detail light conductor of the present invention:
The outside surface of solid solid 1 because the principle that light source 6 is configured in the position of light conductor and 4 bright dippings of solid solid 1 exiting surface is not simultaneously, has different functions.As Fig. 1: we are divided into the plane of incidence 3, exiting surface 4, reflecting surface 5 by function with the outside surface of solid solid 1, and reflecting surface 5 refers to the solid solid 1 internal light outside surface of the solid solid of reflected back 1 inside again.
Solid solid 1 different outside surface must cover different optical film 2 when the present invention made.Be exiting surface 4 equally, because the position difference of light source 6 configurations also must cover different optical films 2.The method that the side entering type that the position difference of backlight incident light is adopted by present industry and two kinds of schemes backlight of straight-down negative are distinguished, we are configured in solid solid 1 the position difference of light guide plate by light source 6, be described as follows at side entering type and straight-down negative: as Fig. 1 a: solid solid 1 is the light conductor made from methacrylate sheet, its geometric configuration is six solids in the solid polyhedron, has six outside surfaces.Be configured in hexahedral side as light source 6, then this side is plane of incidence 3(as not disposing 6 of light sources as reflecting surface 5, so two planes of incidence 3 are arranged among the figure, and all the other two sides are reflecting surface 5).Hexahedral two parallel external surfaces are that exiting surface 4(also can be with one of them parallel external surfaces as exiting surface 4, and then another parallel external surfaces is as reflecting surface 5).Light conductor among Fig. 1 b with the side incident ray, utilize the total reflection of light to propagate, total reflection condition emergent light that the parallel surface of solid destroys light then is the side entering type structure.
As Fig. 2 a: solid solid 1 is the light conductor in the light conductor made of methacrylate sheet, and its geometric configuration is six solids in the solid polyhedron, has six outside surfaces.As light source 6 be configured in a hexahedral parallel surface then this parallel surface be the plane of incidence 3, another parallel surface is that all the other sides of exiting surface 4(are reflecting surface 5).Light guide plate among Fig. 2 b then is the straight-down negative structure with parallel surface of solid by the scattered beam outgoing of another parallel surface of straight line incident ray, solid.
Another purpose of the present invention is solid solid 1 outside surface to the different optical function, covers the optical film 2 that is complementary with known coating method, makes and realizes that more high-level efficiency, multi-purpose light conductor become possibility.
1) plane of incidence 3 of the present invention is that effective light with light source 6 incides solid solid 1 inside, also most of light can be incided solid solid 1 inside with common optically-coupled method.But also have reflection of light loss according to the optical transmission principle at the plane of incidence 3, the ratio that accounts in the outside surface of solid solid 1 when the plane of incidence 3 can not cover optical film 2 when little; But when the loss of the plane of incidence 3 light reflections has influenced the luminescence efficiency of exiting surface 4 and display performance, just need to cover optical film 2, improve light source 6 utilization of incident light, increase transmitted light, reduce the plane of incidence 3 catoptrical losses.The optical film 2 of this performance can be implemented fully by existing known technology, as anti-reflection film, antireflecting film commonly used in the optical device ...As Figure 10, according to institution of higher education's teaching material " thin film technique " (October in 1991 the 1st edition, Wang Liheng, Huang Yuntian, Zheng Haitao write, publishing house of Tsing-Hua University) the P111 page or leaf discloses: as far back as 1817 fraunhofer (Fraunhofer) just made optic antireflecting film with the method for acid etching ... the simplest anti-reflection film is the film at glass surface plating one deck low-refraction ...The P122 page or leaf discloses: can be as drawing a conclusion by above discussion:
(2) n
1D is λ/4 o'clock, and reflectivity R has extreme value, and
Work as n
0＜n
1＜n
2The time, R is minimal value.n
0＜n
1＞n
2The time, R is very big.Namely plate λ/4 films of low-refraction, R is diminished, reach the purpose that increases transmitted light intensity, so this film is called anti-reflection film.
(3) for the situation of individual layer λ/4 bloomings in light vertical incidence from air, the refractive index n of film material
1Be unique factor of control R, n
1Greatly then R is big, n
1Little then R is also little.And n
1=n
2Be anti-reflection or increase an anti-separatrix, n
1＜n
2The time, the effect of film is anti-reflection ...The P124 page or leaf discloses: be the film of λ/4 for the rete optical thickness, if
Then can make reflectivity reduce to zero.If be plated in refractive index and be 1.65 on glass, then the surface reflectivity of centre wavelength can drop to about 0.5% from 6%.The introduction of P125 page or leaf: be 1.52 substrate for refractive index, deposition one deck refractive index is 1.70 earlier, thickness is λ
0/ 4 silicon monoxide film, at this moment n
1=n
2 2/ n
3=1.90, the refractive index that is equivalent to substrate brings up to 1.90 from 1.52.Plate n again
1=1.38 magnesium fluoride film just satisfies desirable antireflecting condition, and making wavelength is λ
0Reflected light reduce to close to zero, light almost 100% see through glass.As eliminating reflection in wideer scope or at predetermined several wavelength, just need the broad-band transparence-increased film of preparation.Three layers of its optical thickness of anti-reflection film commonly used are λ
0/ 4-λ
0/ 2-λ
0/ 4 ... usually select n
1, n
3Make it to satisfy n
3 2=n
1 2n
4, and n
2Can according to circumstances suitably select.
Known by above known technology: reflection loss can also can be eliminated reflection loss in wideer scope or at predetermined several wavelength close to zero in theory.In order to eliminate the reflection loss of light wave λ, the optical thickness of rete must be λ/4 odd-multiple (institution of higher education's teaching materials " thin film technique " October in 1991 the 1st edition, the yellow fortune of Wang Li weighing apparatus is added Zheng Haitao and write publishing house of Tsing-Hua University).
Know according to disclosed data that in addition human eye vision is under bright condition, human eye is the most responsive to the green-yellow light of wavelength X=555nm; And under dim condition, human eye is to the light of wavelength X=507nm the most responsive (" color TV lighting principle and lighting skill " publishing house of Beijing Agricultural University 1988 09 month the 1st edition executes the gram filial piety in precious rich work).
The present invention is in order to eliminate the reflection loss of the most responsive light wave λ of human eye vision.Cover the refractive index of optical film 2 less than the low-index film 7 of solid solid 1 material refractive index for solid solid 1 outside surface as 3 of the planes of incidence, the control of the optical thickness of rete is in the odd-multiple of (126nm-139nm).Just can reduce the loss of 3 pairs of light waves that human eye vision is the most responsive of the plane of incidence, make effective incident ray of light source 6 greatly partly enter light conductor through optically-coupled, thereby improved the utilization factor of light source 6, when the plane of incidence 3 is big, more seem important especially.
The present invention is further preferred: the low-index film 7 of covering is broad-band transparence-increased film.Broad-band transparence-increased film refers to the multilayer anti-reflection film, for example, selects MgF
2(n
1=1.38), ZrO
2(n
2=2.1), CeF
3(n
3=1.62) three layers of anti-reflection film, the optical thickness of film are that λ/4-λ/2-λ/4 (λ is 507nm-555nm) are that the optical thickness of film is three layers of broad-band transparence-increased film of (126.75nm-138.75nm, 253.5nm-277.5nm, 126.75nm-138.75nm).Kao Account can control the optical thickness of film respectively at 126nm to 139nm, 253nm three layers of broad-band transparence-increased film to 277nm, 126nm to 139nm to production cost.Can reduce the reflection loss of 3 pairs of light waves that human eye vision is the most responsive of the plane of incidence at whole visible-range.
2) reflecting surface 5 of the present invention mainly is according to the inside of optical reflection principle with the solid solid 1 of invalid bright dipping reflected back of light conductor inside in the outside surface of solid solid 1, and then from exiting surface 4 secondary outgoing, but also can realize better control to the rising angle of effective bright dipping, make bright dipping more even, further improve the luminous intensity of exiting surface 4.The optical film 2 of this performance can be implemented fully by existing known technology, and reflection efficiency in theory can be up to 100%.
Data according to " optical thin film " (" optical thin film " write group and write, and the Shanghai People's Press published in 1976) P116 page or leaf announcement:
Table 4.3ZrO
2+ SiO
2The reflectivity n of laminated reflective film
H=1.90 n
L=1.46
In principle, this film system is to a certain wavelength, can obtain infinitely the reflectivity near 100%.
According to " optical film technique " (publishing house of Northwestern Polytechnical University October in 2005 the 1st edition Lu Jinjun, LIU WEIGUO are write) disclosed result of study of P24 page or leaf: having known when the monofilm characteristic is discussed, is n in refractive index
GSubstrate on plating be λ with the optical thickness
0/ 4 high index of refraction (n
1) behind the rete, reflectivity increases.
As Figure 10, disclose according to institution of higher education's teaching material " thin film technique " (1991 October the 1st edition, Wang Liheng, Huang Yuntian, Zheng Haitao write, publishing house of Tsing-Hua University) P122 page or leaf: can be as drawing a conclusion by above discussion:
(1) can change its reflectivity at optical element plating monofilm.In the light beam vertical incidence, the optical thickness n of film
1The odd-multiple of d=λ/4(or λ/4) time, reflectivity R is with the variation maximum of thin-film refractive index.And optical thickness n
1During d=λ/2 (or even-multiple of λ/4), reflectivity R remains unchanged., λ/4 films of plating high index of refraction can make R become big, reach the purpose that increases reflective light intensity, and this film just is called and increases anti-film.
The reflectance coating 11 that the present invention adopts is ZrO
2+ SiO
2Reflection multilayer membrane system, the optical thickness of its every tunic are respectively that the odd-multiple of 126nm is to the odd-multiple of 139nm.
The present invention adopts every layer of optical thickness to be (507nm-555nm)/4, λ/4 (λ is 507nm-555nm) i.e. through preferred reflective coating 11, the i.e. dielectric multilayer-film that replaces of the high and low refractive index of (126.nm-138.75nm) considers that production cost can control the optical thickness of film respectively at 126nm to 139nm.This is because of beam reflected from all interfaces of rete, has the identical bits phase when they get back to front surface, thereby produces constructive interference.To such one group of dielectric coating series, can access higher reflectivity, be expected to obtain very the reflectivity close to 100% in theory.Particularly increased the reflectivity of 5 pairs of light waves that human eye vision is the most responsive of reflecting surface.(publishing house of " optical film technique " Northwestern Polytechnical University October in 2005 the 1st edition Lu Jinjun, LIU WEIGUO are write the P24 page or leaf).
Reflectance coating is also used glass microballoon type reflective membrane always at present, for making bright dipping more even, according to " micro-prism type reflective membrane and application prospect thereof " (highway communication science and technology the 1st phase of March in 1998, Wang Zhi and, Wang Fuxin, Dan Mingzheng (Beijing Research Inst. of Aeronautic Material)) principle that discloses, reflectance coating can also reach bright dipping purpose more uniformly with the rising angle of prismatic reflection film control light.
During the present invention makes as less demanding to reflectance coating, reflectance coating also can be directly embeds the reflectivity that is prefabricated in the reflecting surface 5 of solid solid 1 greater than 90% reflection diaphragm, or sticks on the reflecting surface 5.
3) side entering type light conductor exiting surface 4 of the present invention, according to optical principle, from Figure 12 light path as can be known, the side entering type light conductor is to utilize the total reflection principle of light to carry out the propagation of light, by the light total reflection principle know when light from the high medium of refractive index to the low medium of refractive index during (as the PMMA material to air) refraction, the light that is refracted is with the angular emission more oblique than incident ray, when incident angle during greater than a certain angle, light can not be refracted in the air and can phenomenons to internal reflection all take place at exiting surface 4.The light of light source 6 directly is transmitted in the light conductor through light entrance face 3 full optically-coupled major parts, the less transmission energy of loss only in this process, and the total reflection principle of while according to light transmits luminous energy effectively.Up to 92%, mist degree is very little for its transmittance of PMMA material, has very little light absorption, and light can be decayed very little along the very long distance of material transfer.But light can't be drawn from exiting surface 4, therefore the side entering type light conductor is to utilize the total reflection principle of light to carry out the transmission of light on the one hand, require exiting surface 4 anti-its roads of light conductor on the other hand and use it, destroy the condition of light total reflection, the ATR Optical key element of stray light changes the light path of light, light is drawn from exiting surface 4, form the bright and uniform area source.The technology of applied optics rete 2 is also less in the practical application at present.
On the light conductor of the present invention, the simplest method by experiment: for solid solid 1 outside surface as side incident-type exiting surface 4.What cover is that thin-film refractive index is greater than the refractive index of solid solid 1, transmittance〉90%, optical thickness is the odd-multiple of (507nm-555nm)/4.The i.e. high refractive index layer 8 of (507nm-555nm)/4=(126.75nm-138.75nm) odd-multiple, destroyed the condition of light total reflection, the light path of the ATR Optical key element change light of stray light (write group and write by " optical thin film " [optical thin film], the Shanghai People's Press, published the P5 page or leaf in 1976).Light is drawn from exiting surface 4, just can improve the luminous intensity of exiting surface 4.Particularly increased the luminous intensity of 4 pairs of light waves that human eye vision is the most responsive of exiting surface.
The present invention is through the optimization of test of many times, and the selective refraction rate is greater than the refractive index of solid solid 1, and the rete optical thickness is the odd-multiple of 126nm or the odd-multiple of 139nm, transmittance〉90% functional optical dielectric film layer; Or the optical thickness of film controlled respectively at the odd-multiple of the 126nm odd-multiple to 139nm, transmittance 90% nano titanium oxide optical film 2; Or the optics solid state medium thick film layers of nano titanium oxide, its thicknesses of layers is at 0.01mm-1mm, transmittance〉90%, cover on the solid solid 1 as high refractive index layer 8.Rete presents the refractive index more than 1.8 after testing.The transmittance of exiting surface 4〉90%, luminous intensity improves greatly.
4) straight-down negative light conductor exiting surface 4 of the present invention, different fully with the exiting surface 4 of side entering type light conductor, from Figure 11 light path as can be known, straight-down negative light conductor exiting surface 4 is to utilize the direct transmission of light to carry out the transmission of light, light source 6 direct transmissions will inevitably produce the light pollution of direct glare, therefore straight-down negative light conductor exiting surface 4 reply transmitted lights carry out scattering and the scattered beam that will depart from the incident light direction as emergent ray, overcome the light pollution of direct glare.
Diffusion barrier claim again scattering film on backlight oneself to begin to use the optical diffusion film that discloses as patent of invention prospectus publication number CN1453359A be exactly wherein a kind of.
The present invention by experiment for solid solid 1 outside surface as straight-down negative exiting surface 4, the easiest method is to adopt to cover to contain than epoxy resin or silicones refractive index height, and particle diameter adds transparent resins such as epoxy resin to greater than the light diffusing agent (as high-purity silicon dioxide powder, lightweight barium sulphate) of visible wavelength (0.38 μ m-0.78 μ m).Can suitably control according to product thickness specification and requirement, light diffusing agent is scattered in transparent epoxy resin or the transparent silicon resin parent becomes polymkeric substance, cover on solid solid 1 exiting surface 4 after mix stirring and be cured, form thicknesses of layers at the diffusion rete 9 of 1mm-3mm.Increase scattering of light, when covering dazzling light source 6, it is softer that whole exiting surface 4 is sent, and reaches the opaque comfortable effect of printing opacity.Rete mist degree after testing〉80%, diffusivity〉0.6, transmittance〉80%.Substantially satisfy the requirement of area source.
For the optical property that further improves light conductor adds the particulate that contains special wavelength in optical film 2, as fluorescent powder, can improve optical property and the physical property of area source 6.By experiment to the exiting surface 4 of straight-down negative light conductor, covering be with fluorescent powder (medium particle diameter D
50Be 8 μ m-20 μ m) be scattered in the thick film layers of the polymkeric substance of optical clear epoxy resin or optical clear silicone precursor, thicknesses of layers is at 0.1mm-3mm.The exiting surface 4 white light colour temperatures of rete can be controlled after testing, and colour rendering index can reach more than 90.Optical property and the physical property of area source 6 have been further expanded.
5) the present invention as contain the ultraviolet light of 365nm-410nm wavelength in light source 6, to the exiting surface 4 covering photocatalyst optical films 2 of solid solid 1, just can make the photocatalyst assembly in order to further expand the function of light conductor.The area source of making 6 is exactly fabulous photocatalyst lamp.
According to " the illumination handbook (Science Press, July in 2005 the 1st edition day illumination can compile Li Nong, Yang Yanyi) the open disclosure of P103～P105: for the research of photocatalyst, so far, repeatedly variation has taken place in research direction before more than 20 years.When illumination is mapped to TiO
2If go up the powerful oxidative decomposition capacity utilize photocatalyst, can be antibiotic, dustproof, deodorization, environment purification.In order to make material surface have TiO
2Self cleaning function, can be with TiO
2Film is coated in surfaces such as glass, or disperses TiO with containing
2The coating of powder, the solution of organic compound of titanium are coated on the surfaces such as glass ...
What the present invention adopted for the photocatalyst rete 10 of solid solid 1 outside surface through overtesting is the optical film 2 that contains nano titanium oxide, and the optical thickness of its rete is that the odd-multiple of 91.25nm is to the odd-multiple of 102.5nm.Contain the 365nm-410nm wavelength this moment in the light source 6 ultraviolet light has obvious effects.
When the present invention contains the ultraviolet light of 365nm-410nm wavelength through optimization by experiment in light source 6, it is the polymer thick film layers that nano titanium oxide are scattered in epoxy resin or silicone precursor that the exiting surface 4 of solid solid 1 covers photocatalyst rete 10, and its thicknesses of layers is at 0.1mm-3mm.
By experiment through optimizing, as in light source 6, containing the visible light of 400nm-780nm wavelength, the photocatalyst rete 10 that covers, be that the modified nano-titanium dioxide particulate material is scattered in the solid state optics medium thick film layer that forms polymkeric substance in epoxy resin or the silicone precursor, its thicknesses of layers is at 0.1mm～3mm; Or the functional optical dielectric film layer of modified nano-titanium dioxide particulate material, the optical thickness of its rete is that the odd-multiple of 91.25nm is to the odd-multiple of 102.5nm.
Cover the light conductor of photocatalyst optical film 2 after testing: dry back hardness is 〉=5H that clean-up effect reaches: toluene concentration reduces by 80%, ammonia degradation rate 〉=80%, and Degradation Formaldehyde rate 〉=80%, sulfuretted hydrogen 〉=more than 90%, sterilizing rate 〉=98%.Be fabulous photocatalyst assembly, can purify air, sterilization etc.
To sum up analyze, solid solid 1 outside surface covers different optical films 2.Give the luminous intensity and the color developing that improve the area source of making thus, the function of expanding surface light source has proposed a kind of feasible method.
Along with the raising of electric thin technology and detection, preparation means, various new membraneous materials are more and more in recent years, and people's the research visual field begins to expand between the nanometer scale scope of macroscopic view with microcosmic (atom and molecule) from the micron dimension of macroscopic view.When the particle of material was in several to dozens of nanoscales, its structure and character both be different from single atom and molecule, and also being different from has a large amount of atoms or molecular bulk matter, many new physics effects occurred.Because the wavelength of nano particle and light wave and other physical characteristics sizes are quite or littler, periodic boundary condition is destroyed, and the characteristic of light can present the small-size effect that makes new advances.The ratio of nano particle outside surface atomicity and body atomicity increases, and outside surface and interfacial effect significantly strengthen, and particularly particle size drops to that band structure will change when very little, and then produces so-called quantum size effect.The present invention proves the optical film 2 of selecting to contain 0.1%-10% sub-micron or nano particle composite material by experiment, light characteristic when wavelength 507nm-555nm presents the physics effect that makes new advances, and can satisfy various different area sources basically to the requirement of light conductor.
Along with the electric thin technology rapid development, the method that film generates is also more and more.The generation of this device optical film 2 all can be adopted known preparation method commonly used, as physical vapour deposition (PVD), chemical vapor deposition, sol-gel process, gunite, sputtering method ... realize Deng method afford.(Tian Minbo of in March, 1991 first published Tsing-Hua University of " membrane science is in technical manual " China Machine Press, the Shenyang vacuum technique Liu De of research institute make compiling).
The selection of solid solid 1 material and geometric configuration is need select according to the distribution curve flux of optical principle and lighting in the light conductor of the present invention, and described solid solid 1 generally all adopts optical plastic PMMA, PC, PS, SAN, CR-39, TPX, PET or optical glass, optical ceramics.Its geometric configuration is the special-shaped solid that solid polyhedron, solid rotary body or solid polyhedron and solid rotary body are incorporated into, as tabular, tubulose, bar-shaped and bent plate shape.
Description of drawings
Fig. 1 a is the structural representation of a kind of side entering type structure of first embodiment of the invention light conductor,
Fig. 1 b is the side entering type light conductor longitudinal sectional view that first embodiment of the invention covers high refractive index layer.
Fig. 2 a is the structural representation of a kind of straight-down negative structure of second embodiment of the invention light conductor,
Fig. 2 b is the straight-down negative structure light conductor longitudinal sectional view that second embodiment of the invention covers the diffusion rete;
Fig. 2 c is the straight-down negative structure light conductor longitudinal sectional view that second embodiment of the invention covers fluorescent powder diffusion rete;
Fig. 2 d is the straight-down negative structure light conductor longitudinal sectional view that second embodiment of the invention covers the photocatalyst rete.
Fig. 3 a is a kind of tubulose leaded light of third embodiment of the invention body structure synoptic diagram,
Fig. 3 b is third embodiment of the invention side entering type tubulose light conductor longitudinal sectional view.
Fig. 4 a is the structural representation of a kind of curved surface light conductor of fourth embodiment of the invention,
Fig. 4 b is fourth embodiment of the invention side entering type curved surface light conductor transverse sectional view.
Fig. 5 a is the structural representation of a kind of column light conductor of fifth embodiment of the invention,
Fig. 5 b is the light conductor longitudinal sectional view that fifth embodiment of the invention covers high refractive index layer;
Fig. 5 c is the light conductor longitudinal sectional view that fifth embodiment of the invention covers the diffusion rete;
Fig. 5 d is the light conductor longitudinal sectional view that fifth embodiment of the invention covers the photocatalyst rete.
Fig. 6 a is the structural representation of a kind of polyhedron light conductor of sixth embodiment of the invention,
Fig. 6 b is a kind of light conductor transverse sectional view that covers high refractive index layer of sixth embodiment of the invention.
Fig. 7 a is the structural representation of a kind of special-shaped light conductor of seventh embodiment of the invention.
Fig. 7 b is a kind of longitudinal sectional view that covers the light conductor of high refractive index layer of seventh embodiment of the invention.
Fig. 8 a is the structural representation of the another kind of curved surface light conductor of eighth embodiment of the invention,
Fig. 8 b is the longitudinal sectional view that eighth embodiment of the invention covers the light conductor of photocatalyst rete.
Fig. 9 is the structural representation of ninth embodiment of the invention sphere light conductor.
Figure 10 is the optical path analysis figure of anti-reflection film.
Figure 11 is the optical path analysis figure of low-index film of the present invention.
Figure 12 is the optical path analysis figure of high refractive index layer of the present invention.
Mark is represented as respectively among the figure:
1, solid solid 2, optical film 3, the plane of incidence 34, exiting surface 5, reflecting surface 6, light source
7, low-index film 8, high refractive index layer 9, diffusion rete 10, photocatalyst rete 11, reflectance coating
Embodiment
Embodiment one: a kind of side entering type structure light conductor, and as Fig. 1 a, light source 6 adopts 90 of 3528SMD paster LEDs; Be welded on the aluminium base printed panel of long 165mm, wide 10mm, be configured on the plane of incidence 3 of solid solid 1, the solid solid 1 of light conductor is the PMMA sheet material of long 160mm, wide 65mm, thick 6mm, its geometric configuration has six outside surfaces for six solids in the solid polyhedron made from the PMMA material; Light source 6 is configured in hexahedral two relative sides, and then this side is the plane of incidence 3, so two planes of incidence 3 are arranged among the figure, and all the other two sides are reflecting surface 5.A hexahedral parallel external surfaces is exiting surface 4, and then another parallel external surfaces is as reflecting surface 5, and this light conductor is the side entering type structure light conductor with a parallel surface bright dipping of side incident ray, solid.Exiting surface 4 needs to cover high refractive index layer 8.As Fig. 1 b: because refractive index n=1491 of PMMA material, so nano material of selective refraction rate n＞1491, through test of many times, select nano-titanium dioxide powder, it is dispersed in the polymkeric substance of optically transparent epoxy resin or optically transparent silicone precursor by weight, cover with sol-gel process on the exiting surface 4 of solid solid 1, under the temperature that is lower than 60 ° of C through overcuring, form thickness greater than the solid state optics medium thick film layer of 0.05mm, as high refractive index layer 8.Must be noted that during covering other outside surfaces of solid solid 1 are sheltered, the same known preparation method of the plane of incidence 3 usefulness covers low-index film 7, when reflecting surface 5 covers reflective coating 11, also other outside surfaces of solid solid 1 must be sheltered, just can make qualified light conductor.
We do a LED light surface light source to the light conductor made from present embodiment and to test and (to make things convenient for us not examine the loss of Fu incident light in order testing, do not cover low-index film 7 at the plane of incidence 3, do not cover reflective coating 11 at reflecting surface 5 yet, only stick on the reflecting surface 5 with the reflection diaphragm that is prefabricated into.Power supply adopts the constant current source of power 6W, and is as follows with 1.5m integrating sphere test data:
| LED light surface light source state | Luminous flux lm | Brightness mcd/m 2 | Luminous intensity |
| Exiting surface | |||
| 4 does not cover high |
163.89 | 66 | 96 |
| Exiting |
422.34 | 148 | 271 |
| Total light flux when not having light conductor | 617.75 | 204 | 407.5 |
From test data as can be known: cover high refractive index layer 8 back luminous intensities and improved 1.82 times, brightness has improved 1.24 times, and luminous flux has improved 1.58 times, and light conductor leaded light efficient is more than 70%, and leaded light efficient is significantly improved.(Chinese invention patent CN100508222C discloses: the leaded light definitions of efficiency of light conductor is for accounting for the number percent of the total light flux that is coupled into light conductor from total effective luminous flux of light conductor bright dipping interarea outgoing.The data that disclose among the technology publishing documents TP29 of Lumileds Lighting company according to the U.S., a kind of secondary efficiency that designs based on the area source of large-power light-emitting diodes of the said firm is preferably 50%, wherein the leaded light efficient of light conductor is about 60%).
It is again fabulous photocatalyst assembly simultaneously that present embodiment adopts the light conductor of the high refractive index layer 8 of nano titanium oxide, can also purify air, sterilization, can be made into the light surface light source of excellent environment-protective.
Embodiment two: a kind of straight-down negative structure light conductor, and as Fig. 2 a: the solid solid 1 of light guide plate is PMMA sheet material, its geometric configuration is six solids in the solid polyhedron, has six outside surfaces.Light source 6 is configured on the parallel surface of solid solid 1, then this parallel surface is the plane of incidence 3, another parallel surface is exiting surface 4, (all the other sides are reflecting surface 5), this light guide plate are that another parallel surface bright dipping with parallel surface incident ray of solid, solid is straight-down negative structure light guide plate.Its exiting surface 4 is straight-down negative structure light guide plate exiting surface 4, need to cover diffusion rete 9, as Fig. 2 b: present embodiment adopts high-purity silicon dioxide powder light diffusing agent, add in the transparent epoxy resin of refractive index 1.544, when thicknesses of layers is 3mm, mix the stirring back and use sol-gel process, cover on the exiting surface 4 of solid solid 1, make the solid state medium thick film layers through overcuring.Because the diameter of light diffusing agent is bigger than wavelength of visible light (0.38 μ m-0.78 μ m), can effectively cover light source so be dispersed in the light diffusing agent of the capacity in the resin, and it is very little to face two distances between the light diffusion particle mutually.Therefore, produce repeatedly scattering, make dazzling incident light become the even sheen of affine human eye, reach the opaque comfortable effect of printing opacity.
During the present embodiment actual fabrication, be to cover MgF at the plane of incidence 3
2(n
1=1.38), ZrO
2(n
2=2.1), CeF
3(n
3=1.62) low-index film 7, and the optical thickness control of film is at three layers of broad-band transparence-increased film of (126nm-139nm, 253.nm-277nm, 126nm-139nm), and making has reasonable antireflective effect in the whole visible-range.Further improve the utilization factor of light source 6 emission light, reduced the reflection loss of 3 pairs of light waves that human eye vision is the most responsive of the plane of incidence.
Present embodiment actual fabrication reflective coating 11 is to adopt to cover the micro-prism type reflective membrane, can control the rising angle of effective bright dipping, reaches bright dipping purpose more uniformly.
For colour temperature and the colour rendering index that improves area source, exiting surface 4 covers diffusion rete 9, and light source 6 uses led chip to be welded on the aluminium base printed panel.As Fig. 2 c: with fluorescent powder (medium particle diameter D
50Be 8 μ m-20 μ m) add in the transparent epoxy resin parent, when thicknesses of layers is 3mm, after mixing stirring, cover on the exiting surface 4 of solid solid 1, make solid state optics medium thick film layer through overcuring.Because fluorescent powder is dispersed in the resin and can effectively covers light source 6, and it is very little to face two distances between the light diffusion particle mutually.Produce repeatedly scattering, can utilize the led chip excitated fluorescent powder to improve luminescence efficiency again, the colour temperature and the colour rendering index that improve area source make dazzling incident light become the even sheen of affine human eye.
For the function of expanding surface light source, exiting surface 4 covers photocatalyst retes 10, as Fig. 2 d: adopt nano titanium oxide, when thicknesses of layers is 1mm, add to by weight in the transparent epoxy resin parent.Cover on the exiting surface 4 of solid solid 1 after mixing stirring then, make solid state optics medium thick film layer through overcuring, produce the photocatalyst effect by the radiation that contains 365nm-410nm wavelength light that emits from exiting surface 4.
Embodiment three: a kind of tubular guidewire tabula rasa, and as Fig. 3 a: the solid solid 1 of light conductor is PMMA tubing, its geometric configuration is the ring-type solid in the solid rotary body.Outside surface is made up of inside and outside two curved surfaces and two bottom surfaces, light source 6 is configured in a bottom surface of ring-type solid, and then this bottom surface is the plane of incidence 3, so has only a plane of incidence 3 among the figure, another bottom surface is reflecting surface 5, and the negative camber of ring-type solid also is reflecting surface 5.The positive camber of ring-type solid is exiting surface 4, and this light conductor is a bottom surface incident ray with the ring-type solid, the side entering type structure light guide plate of ring-type solid positive camber bright dipping.As Fig. 3 b: present embodiment reflecting surface 5 covers reflective coatings 11, is to adopt ZrO
2+ SiO
2Reflection multilayer membrane system, the optical thickness of its every tunic are respectively that the odd-multiple of 126nm is to the odd-multiple of 139nm.The plane of incidence 3 covers low-index film 7, and exiting surface 4 covers high refractive index layer 8.Low-index film 7, the high refractive index layer 8 that present embodiment covers is identical with above embodiment no longer to be repeated.
Embodiment four: a kind of curved surface light conductor is the PMMA material as the solid solid 1 of Fig. 4 a light conductor, and its geometric configuration is for partly rotating the ring-type solid, and outside surface is made up of two planes, two curved surfaces and two anchor rings.Light source 6 is configured in a side plane of rotation ring-type solid, and then this side is the plane of incidence 3, has only a plane of incidence 3 among the figure, and the outer N-Side surf of ring-type solid is exiting surface 4, and all the other each faces are all as reflecting surface 5.This light conductor is the side entering type structure light conductor of the side plane incident ray with the ring-type solid, an outer N-Side surf bright dipping.Covering reflective coating 11 as Fig. 4 b present embodiment reflecting surface 5, is to adopt ZnS+MgF
2Reflectance coating; Or ZrO
2+ SiO
2Reflectance coating.It is 507nm-555nm that every layer of optical thickness is λ/4(λ) i.e. the dielectric multilayer-film that replaces of the high and low refractive index of (507nm-555nm)/4(126.75nm-138.75nm); The plane of incidence 3 covers low-index film 7, and exiting surface 4 covers high refractive index layer 8, and low-index film 7, the high refractive index layer 8 that present embodiment covers is the same with above embodiment no longer to be repeated.
Embodiment five: a kind of column light conductor, and as Fig. 5 a: the solid solid 1 of light conductor is the PMMA material, and its geometric configuration is the round platform solid in the solid rotary body, outside surface is by two bottom surfaces and a side are formed up and down.Present embodiment has multiple variation by different purposes:
1), as Fig. 5 b, light source 6 is configured in the bottom surface of round platform, then this bottom surface is the plane of incidence 3, so has only a plane of incidence 3 among the figure, the upper bottom surface of round platform is reflecting surface 5, the side surface of round platform is exiting surface 4.This light conductor is the bottom surface incident ray with solid, the side entering type structure light conductor of side surface bright dipping.The plane of incidence 3 covers low-index film 7, and exiting surface 4 covers high refractive index layer 8, and reflecting surface 5 covers reflective coating 11, the same no longer repetition with above embodiment.
2), as Fig. 5 c, light source 6 is configured in the bottom surface of round platform, then this bottom surface is the plane of incidence 3, the side surface of round platform and upper surface are exiting surface 4, do not have reflecting surface 5.This light conductor is that the mixed structure light conductor is gone into, directly descended to the side of bottom surface incident ray, side surface and upper bottom surface bright dipping with solid.It is that side surface covers high refractive index layer 8 that the present embodiment plane of incidence 3 covers 7, one exiting surfaces 4 of low-index film, and another exiting surface 4 is that upper bottom surface covers diffusion rete 9, the same no longer repetition with above embodiment.
3), as Fig. 5 d, solid solid 1 is to use the leaded light technology, as the solid of making of mechanical engraving, printing net-point, laser engraving etc. (not drawing among the figure), light source 6 sends the light that contains the 365nm-410nm wavelength, is configured in the bottom surface of round platform, and then this bottom surface is the plane of incidence 3, therefore has only a plane of incidence 3 among the figure, the upper bottom surface of round platform is reflecting surface 5, and the side surface of round platform is exiting surface 4, and exiting surface 4 covers photocatalyst rete 10.This light conductor is the bottom surface incident ray with solid, the side entering type structure light conductor of side surface bright dipping.The plane of incidence 3 covers low-index film 7, and reflecting surface 5 covers reflective coating 11.Low-index film 7, photocatalyst rete 10, reflective coating 11 that present embodiment covers, the same no longer repetition with above embodiment.
Embodiment six: a kind of polyhedron light conductor, and as Fig. 6 a: the solid solid 1 of light conductor is PMMA sheet material, and its geometric configuration is six prisms in the solid polyhedron, outside surface is by two bottom surfaces and six sides are formed up and down.Light source 6 devices are in a bottom surface of six prisms, then this bottom surface is the plane of incidence 3, therefore has only a plane of incidence 3 among the figure, another bottom surface is reflecting surface 5, all the other six sides are exiting surface 4, and this light conductor is a bottom surface incident ray with solid, the side entering type structure light conductor of side bright dipping.As Fig. 6 b: the present embodiment plane of incidence 3 covers low-index films 7, and exiting surface 4 covers high refractive index layers 8, and reflecting surface 5 covers reflective coatings 11.Also have a kind of embodiment namely to be: light source 6 devices are in a bottom surface of six prisms, then this bottom surface is the plane of incidence 3, another bottom surface and all the other six sides are exiting surface 4, there is not reflecting surface 5, this light conductor is a bottom surface incident ray, each side and another bottom surface bright dipping with solid, and institute thinks that side goes into, directly descends the mixed structure light guide plate.The low-index film 7 that present embodiment covers, high refractive index layer 8, diffusion rete 9, reflective coating 11, the same no longer repetition with above embodiment.
Embodiment seven: a kind of special-shaped light conductor, as Fig. 7 a: the assembly that the solid solid 1 of light conductor is made for the PMMA material, its geometric configuration is ring-type solid in the solid rotary body and the assembly of solid rectangular parallelepiped, outside surface by ten planes, inside and outside two curved surfaces and up and down two anchor rings form.As Fig. 7 b: light source 6 is prefabricated LED pointolite 6 modules, directly led chip is bundled in light source 6 die sets of heating radiator.Directly light source 6 die sets are embedded in during enforcement in four inner side plane and following anchor ring of assembly, then these four inner side plane and a following anchor ring are the plane of incidence 3, therefore have five planes of incidence 3 among the figure, a positive camber of assembly, a upper ring surface and a last plane are exiting surface 4, and all the other each faces are all as reflecting surface 5.This light guide plate is four inner side plane and the following anchor ring incident ray with solid, and upper ring surface, positive camber reach the side that goes up planar light extracting and go into straight mixed structure light guide plate down.Present embodiment covers low-index film 7 at the plane of incidence 3, and last plane and positive camber exiting surface 4 cover high refractive index layer 8, and upper ring surface exiting surface 4 covers diffusion rete 9, and reflecting surface 5 covers reflective coating 11.The low-index film 7 that present embodiment covers, high refractive index layer 8, diffusion rete 9, reflective coating 11, the same no longer repetition with above embodiment.
Embodiment eight: another kind of curved surface light conductor, as Fig. 8 a: the solid solid 1 of light conductor is the PMMA material, its geometric configuration is solid part ring-type rotation geometry body, outside surface is made up of two planes, two curved surfaces and two anchor rings, and this light conductor is the side entering type structure light conductor with two side plane incident raies of ring-type solid, an outer N-Side surf bright dipping.Directly light source 6 is configured in two side planes of rotation ring-type solid during enforcement, two planes of incidence 3 are arranged among the figure, the outer N-Side surf of ring-type solid is exiting surface 4, and inner curve and all the other each faces are all as reflecting surface 5.Cover low-index film 7 as Fig. 8 b present embodiment plane of incidence 3, exiting surface 4 covers high refractive index layer 8 or photocatalyst rete 10, and reflecting surface 5 covers reflective coating 11.The optical film 2 that present embodiment covers is the same with above embodiment no longer to be repeated.
Embodiment nine: a kind of sphere light conductor, as Fig. 9: the solid solid 1 of light conductor is optical glass or optical ceramics cover, its geometric configuration is the spherical solid of the partial rotation in the solid polyhedron, and the light conductor outside surface is made up of inside and outside two hemisphere faces and a plane of a loop.Light source 6 is configured on the plane of a loop of solid, and then this plane of a loop is the plane of incidence 3, so to have only 3, one interior hemisphere faces of a plane of incidence among the figure be that 5, one outer hemisphere faces of reflecting surface are exiting surface 4.During enforcement light source 6 is configured in the plane of a loop incident ray, by outer hemisphere face bright dipping.Exiting surface 4 cover photocatalyst retes 10 be Bian with spraying process with mean grain size 5nm-15nm, than external surface area 140m
2It is on the exiting surface 4 that technological processes such as the solution of organic compound of the nano titanium oxide of/g is coated, film forming, drying cover outer hemisphere face, and the odd-multiple of 102.5nm is arrived in the optical thickness control of its rete in the odd-multiple of 91.25nm.The present embodiment plane of incidence 3 covers low-index film 7, and reflecting surface 5 covers reflective coating 11.The optical film 2 that present embodiment covers is the same with above embodiment no longer to be repeated.
Show that by the practicability test to the lighting made by the present embodiment light conductor can reduce pollution significantly, pollution abatement significantly reduces the number of times of cleaning to the influence of luminous flux, can also reduce the expense of maintenance.Confirmed also have the effect of deodorizing at the indoor lighting that scribbles photocatalyst in addition, the most noticeable its antibacterial action.Photocatalyst also can decompose toxin in kill bacteria, and this is the unexistent functions of other antiseptics.When considering that having superior application antibiotic, light conductor of the present invention when preventing dust photocatalyst reaction will have a boundless field, be coated with the light conductor of photocatalyst optical film 2 after testing: dry back hardness is 〉=5H, clean-up effect reaches: toluene concentration reduces by 80%, ammonia degradation rate 〉=80%, Degradation Formaldehyde rate 〉=80%, sulfuretted hydrogen 〉=more than 90%, sterilizing rate 〉=98%.Present embodiment is exactly good photocatalyst assembly, can purify air, sterilization, becomes excellent environment-protective type light conductor.
After the present invention covers optical film 2, owing to can on solid solid 1 outside surface of light conductor, directly generate optical film 2, improved the luminous intensity of the area source of being made by light conductor of the present invention greatly, expanded the function of area source, not only can be used for illumination, show light fixture and backlight, and can also purify air, sterilization, antistatic, phototherapy, plant illumination, and can be made into and purify light fixture, sterilization light fixture, antistatic light fixture, phototherapy light fixture, plant illumination light fixture etc.Along with the development of electric thin technology, open up more business opportunity will for the light conductor application product.
It is also to be noted that what more than enumerate only is specific embodiments of the invention, the light source 6 of cooperation is the led light source, and light conductor of the present invention not only can cooperate the led light source to use also can cooperate other various light sources uses.Obviously, the invention is not restricted to above examples of implementation, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (8)
1. one kind is coated with the light conductor that spreads rete, it comprises transparent solid solid (1) and optical film, it is characterized in that: described optical film is diffusion rete (9), the thickness that described transparent solid solid (1) is made for the PMMA material〉1mm polyhedron, wherein light source 6 is configured in the polyhedral plane of incidence of straight-down negative structure (3), the polyhedral exiting surface of straight-down negative structure, what cover is diffusion rete (9), and the polyhedral outside surface of all the other straight-down negative structures is reflecting surface (5); Wherein, the selective light diffusant is scattered in the solid state optics medium thick film layer that forms polymkeric substance in transparent epoxy resin or the transparent silicone precursor by 0.1%～5% weight ratio, and its thicknesses of layers is at 1mm～5mm, mist degree〉80%, diffusivity 0.6, transmittance 80%; Or fluorescent powder is scattered in optical clear epoxy resin or the optical clear silicone precursor solid state optics medium thick film layer that forms polymkeric substance by weight 5%～30%, its thicknesses of layers is that 8 μ m are to 20 μ m at the medium particle diameter D50 of 0.1mm～3mm, fluorescent powder; Or with silicon dioxide or the lightweight barium sulphate of particle diameter greater than 0.78 μ m, being scattered in the solid state optics medium thick film layer that optically transparent epoxy resin or optically transparent silicone precursor form polymkeric substance by 1%～5% weight ratio, its thicknesses of layers is at 1mm～3mm; Cover on the exiting surface (4) with sol-gel process, through solidifying to form the solid state optics medium thick film layer of polymkeric substance, its thicknesses of layers is at 0.1mm～3mm under the temperature that is lower than 60 ° of C; As described diffusion rete (9).
According to claim 1 a kind of be coated with the diffusion rete light conductor, it is characterized in that: the described plane of incidence (3) covers low-index film (7), described low-index film (7) be refractive index less than the incident film of transparent solid solid material refractive index, the odd-multiple that its rete optical thickness is 126nm is to the odd-multiple of 139nm; Or MgF
2, ZrO
2, CeF
3, the optical thickness of film be respectively 126nm to 139nm, 253nm to 277nm, 126nm is to three layers of broad-band transparence-increased film of 139nm.
According to claim 1 a kind of be coated with the diffusion rete light conductor, it is characterized in that: described reflecting surface (5) covers reflective coating (11), and described reflective coating (11) is that every layer of optical thickness is the dielectric material laminated reflective film that the high and low refractive index of 126nm～139nm replaces; Or prismatic reflection film; Or be embedded in reflectivity in the reflecting surface (5) greater than 90% reflection diaphragm; Or stick on reflectivity on the reflecting surface (5) greater than 90% reflection diaphragm.
4. method for making of light conductor that is coated with the diffusion rete, it generates four road technologies by processing, the configuration of optical film (2) material, the optical film (2) of the selection of light conductor material, transparent solid solid (1) shape forms, and it is characterized in that concrete operations technology undertaken by following step;
The first step: select for use to meet transmittance, the light conductor material that mist degree, absorptivity require is measured the index of refraction of light conductor material;
Second step: again the light conductor material is made the transparent solid solid (1) of the various geometric configuratioies that need, described solid solid (1), having an outside surface at least is the plane of incidence (3), having an outside surface at least is exiting surface (4);
The 3rd step: according to the position difference of light source (6) configuration, with the corresponding diffusion of the outside surface configuration rete (9) of light conductor;
The 4th step: with the optical film material that is configured to, cover with sol-gel process on the exiting surface (4) of solid solid, under the temperature that is lower than 60 ° of C through overcuring, form thickness and cover the outside surface of light conductor greater than the solid state optics medium thick film layer of 0.05mm, must be noted that during covering other outside surfaces of solid solid 1 are sheltered;
Diffusion rete (9) is to adopt particle diameter greater than the high-purity silicon dioxide powder light diffusing agent of 0.78 μ m refractive index 1.61, add in the transparent epoxy resin of refractive index 1.544, when thicknesses of layers is 3mm, usage ratio 1%-2% mixes dispersed with stirring then in optically transparent epoxy resin or optically transparent silicone precursor; Perhaps the selective light diffusant is scattered in transparent epoxy resin or the transparent silicone precursor by 0.1%～5% weight ratio; Or fluorescent powder is scattered in by weight 5%～30% that its thicknesses of layers is that 8 μ m are to 20 μ m at the medium particle diameter D50 of 0.1mm～3mm, fluorescent powder in optical clear epoxy resin or the optical clear silicone precursor; Or with silicon dioxide or the lightweight barium sulphate of particle diameter greater than 0.78 μ m, be scattered in optically transparent epoxy resin or optically transparent silicone precursor by 1%～5% weight ratio.
Described optical film (2) covers thickness〉transparent solid solid (1) outside surface of 1mm;
On described transparent solid solid (1) outside surface, contain the deielectric-coating material optical film (2) of one deck sub-micron or nano particle at least, thicknesses of layers is at 91nm-5mm.
5. a kind of method for making of light conductor that is coated with the diffusion rete according to claim 4, it is characterized in that: the described plane of incidence (3), what cover is low-index film (7), described low-index film (7) be refractive index less than the incident film of solid solid material refractive index, the odd-multiple that its rete optical thickness is 126nm is to the odd-multiple of 139nm; Or MgF
2, ZrO
2, CeF
3, the optical thickness of film be respectively 126nm to 139nm, 253nm to 277nm, 126nm is to three layers of broad-band transparence-increased film of 139nm.
6. a kind of method for making of light conductor that is coated with the diffusion rete according to claim 4 is characterized in that: the reflecting surface (5) of described solid solid (1), covering be reflective coating (11), described reflective coating (11) is ZrO
2+ SiO
2Laminated reflective film system, the optical thickness of its every tunic is respectively that the odd-multiple of 126nm is to the odd-multiple of 139nm; Or the dielectric material laminated reflective film that replaces of every layer of optical thickness high and low refractive index of being 126nm～139nm; Or prismatic reflection film; Or be embedded in reflectivity in the reflecting surface (5) greater than 90% reflection diaphragm; Or stick on reflectivity on the reflecting surface (5) greater than 90% reflection diaphragm.
7. a kind of method for making of light conductor that is coated with the diffusion rete according to claim 11, it is characterized in that: described solid solid (1) is the special-shaped solid that polyhedron, rotary body or polyhedron, rotary body are incorporated into.
8. a kind of method for making of light conductor that is coated with the diffusion rete according to claim 11, it is characterized in that: described solid solid (1) is optical plastic PMMA, PC, PS, SAN, CR-39, TPX, PET or optical glass.
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| CN2013101186215A CN103257392A (en) | 2010-11-23 | 2010-11-23 | Light guiding body covered with diffusion barrier layer |
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|---|---|---|---|
| CN2013101186215A CN103257392A (en) | 2010-11-23 | 2010-11-23 | Light guiding body covered with diffusion barrier layer |
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|---|---|---|---|
| CN2010105581794A Division CN102081184B (en) | 2010-11-23 | 2010-11-23 | Light guide body covered with optical membrane |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI563203B (en) * | 2013-09-18 | 2016-12-21 | Nifco Inc | Illumination device |
| CN108415117A (en) * | 2018-02-06 | 2018-08-17 | 珠海格力电器股份有限公司 | A kind of smooth conducting membranes, ultraviolet-sterilization device and equipment |
| CN109031487A (en) * | 2018-09-28 | 2018-12-18 | 武汉华星光电技术有限公司 | Diffusion barrier and preparation method thereof |
| CN112147161A (en) * | 2020-09-29 | 2020-12-29 | 惠州高视科技有限公司 | Cambered surface detection device and cambered surface detection method |
-
2010
- 2010-11-23 CN CN2013101186215A patent/CN103257392A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI563203B (en) * | 2013-09-18 | 2016-12-21 | Nifco Inc | Illumination device |
| US10351056B2 (en) | 2013-09-18 | 2019-07-16 | Nifco Inc. | Illumination device |
| CN108415117A (en) * | 2018-02-06 | 2018-08-17 | 珠海格力电器股份有限公司 | A kind of smooth conducting membranes, ultraviolet-sterilization device and equipment |
| CN109031487A (en) * | 2018-09-28 | 2018-12-18 | 武汉华星光电技术有限公司 | Diffusion barrier and preparation method thereof |
| WO2020062411A1 (en) * | 2018-09-28 | 2020-04-02 | 武汉华星光电技术有限公司 | Diffusion film and method for manufacturing same |
| CN112147161A (en) * | 2020-09-29 | 2020-12-29 | 惠州高视科技有限公司 | Cambered surface detection device and cambered surface detection method |
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Application publication date: 20130821 |