CN101943366A - Anti-glare diffusion plate with low light loss and preparation method and application thereof - Google Patents
Anti-glare diffusion plate with low light loss and preparation method and application thereof Download PDFInfo
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- CN101943366A CN101943366A CN2010102189289A CN201010218928A CN101943366A CN 101943366 A CN101943366 A CN 101943366A CN 2010102189289 A CN2010102189289 A CN 2010102189289A CN 201010218928 A CN201010218928 A CN 201010218928A CN 101943366 A CN101943366 A CN 101943366A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000009792 diffusion process Methods 0.000 title abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 25
- 238000005286 illumination Methods 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 239000008188 pellet Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- -1 polysiloxane Polymers 0.000 claims description 3
- 238000009877 rendering Methods 0.000 abstract description 8
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- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000004313 glare Effects 0.000 abstract 1
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
- 239000004005 microsphere Substances 0.000 abstract 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
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Abstract
The invention discloses an anti-glare diffusion plate with low light loss and a preparation method and application thereof. The diffusion plate is formed by mono-dispersing and filling organic silicon resin microsphere powder with volume percentage of 0.05-2% in optics grade polymethyl methacrylate matrices. The diffusion plate has the high scattering and low light loss characteristics, has light source illumination color rendering property being not likely to change, can be used in the high-power LED illumination fields, such as indoor and outdoor LED lamps, planar illumination, art illumination, soft illumination or LED-TV direct liquid-crystal backlight illumination, obtain the illumination effect of uniform brightness, eliminate uncomfortable glare and damage caused by directional hard light with high color temperature on the human eyes and improve the optical efficiency and illumination quality and has broad application prospect.
Description
Technical field
The present invention relates to lighting field, be specifically related to a kind of anti-dazzle low light loss diffuser plate and its production and application.
Background technology
In the illuminating engineering field, in order to obtain evenly soft illuminating effect, extensive use light spreads (light scattering) material and technology.These technology can be divided into two classes substantially: area scattering and volume scattering.The area scattering technology comprises surperficial frosted, embossing, making microprism, dusts, films or the like; The volume scattering technology refers to fill the process of light diffusing agent in glass or lucite.Light diffusing agent refers to and immiscible transparent ceramic powder of host material or organic resin powder, or adopts the method for physical blending that immiscible transparent plastic is made plastic alloy, because its refractive index is inequality with matrix, to light formation scattering.
For light-scattering material, it is the technical indicator of a pair of contradiction that rate (or mist degree) is penetrated in light transmission rate and light expansion, higher light diffusivity is a cost with the sacrificial light transmitance normally, the light transmittance of the light-scattering material that above-mentioned traditional handicraft makes generally has only 30～70%, and a large amount of light energies have been fallen by loss and waste.
Large power white light LED is as green illumination light source, have energy-saving and environmental protection, long-life advantage, but it is high colour temperature high directivity high light light source, to human eye particularly the dazzle discomfort even the permanent injury that cause of children ' s vision can not be ignored, be necessary to adopt light diffusing sheet that the LED spot light is transformed into uniform surface light source and just can reach and cause higher lighting quality.In order to keep the power savings advantages of LED illumination, more strict to the requirement of the light transmission rate of light diffusing sheet than the requirement of general lighting, require exploitation to have the high light transmitance simultaneously and the light-scattering material of rate is penetrated in the light expansion.
Summary of the invention
The objective of the invention is to the dazzle discomfort that human eye is caused that exists according to existing large power white light LED even the problems such as contradiction of permanent injury and light transmission rate and light diffusivity, providing a kind of has high light diffusivity and light transmission rate to reach maximum, can also eliminate the anti-dazzle low light loss diffuser plate that dazzle that high colour temperature directive property high light causes human eye does not accommodate damage.
Another purpose of the present invention is to provide the preparation method of above-mentioned anti-dazzle low light loss diffuser plate.
A further object of the invention is to provide the application of above-mentioned anti-dazzle low light loss diffuser plate.
Above-mentioned purpose of the present invention is achieved by the following technical programs:
A kind of anti-dazzle low light loss diffuser plate is that 0.05～2% organic siliconresin microballoon is powder filled by percentage by volume to form in optical-grade polymethylmethacrylacontinuous matrix, and thickness is 0.5～5mm.
As a kind of preferred version, the thickness of above-mentioned diffuser plate is 2～3mm.
As a kind of preferred version, described organic siliconresin powder refractive index is 1.38～1.46.
As a kind of preferred version, described organic siliconresin powder is to have different crosslinking degrees and molecular weight, particle diameter is the polysiloxane-based microballoon powder of 1～10 μ m, the nodularization rate surpasses 95%, this powder has homogeneous particle diameter, high melt point, stable physicochemical property, dispersiveness and good fluidity, not can because of mix and the injection moulding processing technology in pyroprocess change shape, size and optical property.Organic siliconresin powder and poly-methylpropanoic acid carbomethoxy material have the good interface compatibility.
The preparation method of anti-dazzle low light loss diffuser plate of the present invention comprises the steps: by high-temperature mixing the organic siliconresin powder to be filled in the matrix, makes pellet again, finally makes diffuser plate.
Described organic siliconresin powder is scattered in the matrix, agglomeration or thermal processing distortion can not take place.
The concrete preparation process of anti-dazzle low light loss diffuser plate of the present invention can be as follows: with poly-methylpropanoic acid methyl esters pellet of optical grade and organic siliconresin powder after surface treatment mix according to a certain percentage, wire drawing, pelletizing, adopt conventional Shooting Technique to be processed into light diffusing sheet again, can obtain test piece and finished product.It is in order to obtain single dispersion effect that powder is carried out surface treatment, and concrete grammar and follow-up injection moulding processing technology patent applied for are disclosed (China national application for a patent for invention number: 200810030341.8).Other plastic processings such as employing is extruded, compression moulding also can because the filling concentration of silicones powder is lower, processing technology is not had specific (special) requirements, do not have obvious harmful effect yet.Guaranteeing to fill other functional modifier simultaneously, as plastic cement fire retardant, waterproofing agent, heat-resistant agent, fluorescer, antistatic additive or the like under the impregnable prerequisite of target of the present invention.
Adopt day island proper Tianjin UV2550 measurement of ultraviolet-visible spectrophotometer sample directional light transmitance, total light transmission rate and light diffusivity, it is 25R-240A that instrument carries the integrating sphere model.The directional light transmitance represents with Tc%, and after the directional light of establishing intensity and be I0 saw through diffuser plate, still parallel light intensity forward was I1, then Tc%=I1/I0*100%.Except that directional light I1, remaining light is referred to as diffused light I2 in the transmitted light, then total light transmission rate Tt%=(I1+I2)/I0*100%.Among the present invention the light diffusivity is defined as Td%=I2/I0*100%.The direct measurement of Tc% can get, and Tt% adopts integrating sphere to measure and can get, and the light diffusivity can get by simple computation, Td%=(1-Tc/Tt) * 100%.The directional light transmitance, total light transmission rate and light diffusivity are all relevant with the lighting source wavelength.Therefore, the light diffusivity with the index mist degree (H%) that is commonly used to represent the trnaslucent materials turbidity though definition similar, not just the same, wherein comprised the information of wavelength dispersion, and also inequality to some extent to the definition at light scattering angle.
Total light transmission rate Tt% is used for estimating the scatter attenuation extent of damage of light diffusing sheet to the led light source energy.In order to reach energy-conservation effect, what Tt% should be enough as far as possible is big, and its theoretical boundary can not surpass total light transmission rate 90～92% of the poly-pure material test piece of methylpropanoic acid methyl esters.After filling light diffusing agent, Zong light transmission rate descends with the increase of filling concentration and sheet metal thickness.Correspondingly, light diffusivity Td% can increase.In order to obtain higher Tt% and Td% simultaneously, filling light diffusing agent kind, concentration, particle diameter and thickness of slab need carry out optimization process in every possible way.In the optimization range of the present invention, Tt% generally can reach about 88%, and Td% has realized the optimum balance of low light loss and high diffusion greater than 90% simultaneously.
Improve more than the Td% to 85%, in most of the cases can eliminate the high-power LED light source speck, and keep low light loss.But for the superbright led light source, though Td% up to more than 95%, the light source speck may still exist, its reason is that a part of parallel light penetrates diffuser plate not by due to the microballoon scattering.Though the brightness of light source speck generally can not surpass 20% of nearby bias light brightness, human eye is difficult to speck is distinguished from bias light, still can suppress or eliminate speck by significantly improve filling concentration and diffuser plate thickness of slab, but can bring declining to a great extent of Tt% value, can be low to moderate about 70% at most.Can also make the inhibition superbright led light source speck that patterns such as prismatic, hemispherical or ripple are eliminated on the diffuser plate surface by the faying face scattering technology, the Tt% value also will have the decline of certain amplitude.
Because the scattering coefficient of microballoon is relevant with refractive index, particle diameter and optical source wavelength, material parameter selects improper meeting to cause the colour rendering of led light source to change.The present invention calculates and experiment parameter optimization through optical theory, adopts the mixing filling of the silicones microballoon of two kinds and above different-grain diameter, can realize that the colour rendering of led light source is constant substantially, promptly keeps the colour temperature of light source, chromaticity coordinates not to change.
Adopt technical scheme of the present invention, also can be according to the needs of illuminating light distribution, adjust the diffuse transmission peak shape and the half-peak beam angle of led light source within the specific limits, therefore can the LED illuminating bundle too be dispersed, cause the obvious decline of effective lighting regional luminance because of adopting diffuser plate.
Desirable 0.5～the 5mm of the thickness of diffuser plate.Under the identical situation of other material parameter, the thickness of diffuser plate is big more, and light transmittance is low more, and diffusivity is high more.If with the product of light transmittance and the diffusivity evaluation index as combination property, this product had maximum when then thickness was 2～3mm.
Compared with prior art, the present invention has following beneficial effect:
(1) anti-dazzle low light loss diffuser plate of the present invention is filled in the poly-methylpropanoic acid carbomethoxy material by adopting the organic siliconresin powder, has realized effective coupling of both refractive indexes, thereby obtains the optimum balance of high permeability and high diffusivity;
(2) the organic siliconresin powder of two kinds of anti-dazzle low light loss diffuser plate employings of the present invention and above different-grain diameter, led light source illumination colour rendering can not change;
(3) the led light source speck can be eliminated and suppress to anti-dazzle low light loss diffuser plate of the present invention, kept higher light energy utilization ratio simultaneously.
The specific embodiment
Further explain the present invention below in conjunction with embodiment, but embodiment does not do any type of qualification to the present invention.
(China national application for a patent for invention number: method 200810030341.8) is carried out surface treatment with the silicones powder by patent documentation, mix then, wire drawing, pelletizing, make the injection moulding pellet, adopt conventional Shooting Technique to make the diffuser plate test piece again, thickness of slab 1mm.Carry out the test of total light transmission rate Tt% and light diffusivity Td% by preceding method.
Table 1 is sample number into spectrum, experiment material parameter and test result.Tt% and Td% all get the mean value in wavelength 400 to 800 nanometer range in the table, judge that with the wavelength change amplitude diffuser plate contrasts the influence degree of bright colour rendering with Tt% and Td%, concrete computational methods are minimum of a value and peaked ratio, and are converted into percentage.Ratio is big more, shows that its influence that contrasts bright colour rendering is more little.In the present invention, Td% promptly can obtain good light diffusion effect greater than 85%.The variation of color rendering properties of light source depends primarily on the relative homogeneity of Tt%, because the existence of mixed light effect, the uniformity of Td% only just has the more index meaning of deep layer to the influence of colour rendering in the optical system of having relatively high expectations.
Table 1 sample number into spectrum, experiment material parameter and test result
Claims (8)
1. anti-dazzle low light loss diffuser plate is characterized in that by percentage by volume being that 0.05～2% organic siliconresin microballoon powder list disperses to be filled in the optical-grade polymethylmethacrylacontinuous matrix to form.
2. anti-dazzle low light loss diffuser plate according to claim 1, the thickness that it is characterized in that described diffuser plate is 0.5～5mm.
3. anti-dazzle low light loss diffuser plate according to claim 2, the thickness that it is characterized in that described diffuser plate is 2～3mm.
4. anti-dazzle low light loss diffuser plate according to claim 1 is characterized in that described organic siliconresin powder refractive index is 1.38～1.46.
5. anti-dazzle low light loss diffuser plate according to claim 1 is characterized in that described organic siliconresin powder is that particle diameter is the polysiloxane-based microballoon powder of 1～10 μ m, and the nodularization rate surpasses 95%.
6. the preparation method of any described anti-dazzle low light loss of claim diffuser plate in the claim 1～5 is characterized in that comprising the steps: by high-temperature mixing the organic siliconresin powder being filled in the matrix, makes pellet again, finally makes diffuser plate.
7. according to the preparation method of the described anti-dazzle low light loss of claim 6 diffuser plate, it is characterized in that the organic siliconresin powder of at least two kinds of different-grain diameters is filled in the matrix, the difference of the particle diameter of organic siliconresin powder is 1 ~ 3 μ m, and the filling concentration of the organic siliconresin powder of different-grain diameter is identical.
8. the application of any described anti-dazzle low light loss of the claim diffuser plate of claim 1～5 in high-power LED illumination.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731948A (en) * | 2011-03-31 | 2012-10-17 | 海洋王照明科技股份有限公司 | Engineering plastic for transparent lamp barrel, preparation method of the engineering plastic and transparent lamp barrel prepared from the engineering plastic |
| CN104212151A (en) * | 2014-09-16 | 2014-12-17 | 成都欧盛光电科技有限公司 | Lens material and preparation method thereof |
| CN104900790A (en) * | 2015-05-13 | 2015-09-09 | 福建泉州世光照明科技有限公司 | LED light source atomization package colloid and atomization LED light source |
| CN105444120A (en) * | 2015-12-23 | 2016-03-30 | 东莞市捷和光电有限公司 | LED panel lamp based on high heat-dissipation and light-transmittance diffuser plate and anti-reflecting coating technology thereof |
| CN106903937A (en) * | 2017-04-01 | 2017-06-30 | 合肥美凯电子有限公司 | A kind of multi-functional OCA optical films |
| CN109161141A (en) * | 2018-06-23 | 2019-01-08 | 深圳市宝聚合塑料有限公司 | A kind of PMMA frosted resin and preparation method thereof |
| CN109268775A (en) * | 2018-11-13 | 2019-01-25 | 华域视觉科技(上海)有限公司 | Optical element, car light and automobile for car light |
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| CN101193981A (en) * | 2005-06-08 | 2008-06-04 | 出光兴产株式会社 | Light-diffusing polycarbonate resin composition and light-diffusing plate using same |
| CN101435949A (en) * | 2007-11-14 | 2009-05-20 | 帝人化成株式会社 | Direct down type backlight liquid crystal display apparatus and light diffusing plate |
| CN101493536A (en) * | 2008-01-24 | 2009-07-29 | 财团法人工业技术研究院 | Light diffuser plate and method for producing the same |
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Patent Citations (4)
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| US7132136B2 (en) * | 2001-12-14 | 2006-11-07 | Eastman Kodak Company | Stacked microvoided light diffuser |
| CN101193981A (en) * | 2005-06-08 | 2008-06-04 | 出光兴产株式会社 | Light-diffusing polycarbonate resin composition and light-diffusing plate using same |
| CN101435949A (en) * | 2007-11-14 | 2009-05-20 | 帝人化成株式会社 | Direct down type backlight liquid crystal display apparatus and light diffusing plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731948A (en) * | 2011-03-31 | 2012-10-17 | 海洋王照明科技股份有限公司 | Engineering plastic for transparent lamp barrel, preparation method of the engineering plastic and transparent lamp barrel prepared from the engineering plastic |
| CN104212151A (en) * | 2014-09-16 | 2014-12-17 | 成都欧盛光电科技有限公司 | Lens material and preparation method thereof |
| CN104900790A (en) * | 2015-05-13 | 2015-09-09 | 福建泉州世光照明科技有限公司 | LED light source atomization package colloid and atomization LED light source |
| CN105444120A (en) * | 2015-12-23 | 2016-03-30 | 东莞市捷和光电有限公司 | LED panel lamp based on high heat-dissipation and light-transmittance diffuser plate and anti-reflecting coating technology thereof |
| CN106903937A (en) * | 2017-04-01 | 2017-06-30 | 合肥美凯电子有限公司 | A kind of multi-functional OCA optical films |
| CN109161141A (en) * | 2018-06-23 | 2019-01-08 | 深圳市宝聚合塑料有限公司 | A kind of PMMA frosted resin and preparation method thereof |
| CN109268775A (en) * | 2018-11-13 | 2019-01-25 | 华域视觉科技(上海)有限公司 | Optical element, car light and automobile for car light |
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Effective date of registration: 20170704 Address after: 510890 Huadu District, Guangdong, Guangzhou Flower Town, SAST Road, No. 1, No. 3 Patentee after: Guangdong bright lighting technology Co., Ltd. Address before: 510632 Whampoa West Road, Guangdong, Guangzhou, No. 601, No. Patentee before: Jinan University |
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Denomination of invention: Anti-glare diffusion plate with low light loss and preparation method and application thereof Effective date of registration: 20180515 Granted publication date: 20130724 Pledgee: China Co truction Bank Corp Guangzhou Yuexiu branch Pledgor: Guangdong bright lighting technology Co., Ltd. Registration number: 2018440020030 |
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Denomination of invention: Anti-glare diffusion plate with low light loss and preparation method and application thereof Effective date of registration: 20190625 Granted publication date: 20130724 Pledgee: China Co truction Bank Corp Guangzhou Yuexiu branch Pledgor: Guangdong bright lighting technology Co., Ltd. Registration number: 2019440000237 |
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Date of cancellation: 20200902 Granted publication date: 20130724 Pledgee: China Co. truction Bank Corp Guangzhou Yuexiu branch Pledgor: GUANGDONG LIANGMEIJI LIGHTING TECHNOLOGY Co.,Ltd. Registration number: 2019440000237 |