本文選題：導(dǎo)光板 + 微結(jié)構(gòu)�。� 參考：《北京化工大學(xué)》2015年碩士論文

【摘要】：導(dǎo)光板(LGP, Light Guide Plate)的作用是將線光源轉(zhuǎn)化為面光源,隨著LED產(chǎn)業(yè)發(fā)展,市場(chǎng)對(duì)導(dǎo)光板的要求趨向于精細(xì)化和多元化。但是目前導(dǎo)光板的加工方法都有一定缺陷,這些缺陷是：加工尺寸固定、工藝復(fù)雜、間歇生產(chǎn)、易造成環(huán)境污染等。因此改善導(dǎo)光板的加工方法對(duì)導(dǎo)光板的應(yīng)用有重要意義。本文提出利用共擠方法生產(chǎn)雙層復(fù)合微結(jié)構(gòu)體散射導(dǎo)光板(下稱(chēng)復(fù)合導(dǎo)光板)。該方法將微結(jié)構(gòu)與散射粒子結(jié)合,以綜合提高導(dǎo)光板的平均照度、照度偏差和光通量等光學(xué)性能。實(shí)驗(yàn)以PMMA為基材,散射母粒為添加劑,利用連續(xù)共擠壓印的方法制備出雙層復(fù)合微結(jié)構(gòu)體散射導(dǎo)光板。其中,根據(jù)導(dǎo)光板各層添加散射母粒的濃度不同,共得到六種實(shí)驗(yàn)方案。根據(jù)導(dǎo)光板在LED面板燈中與反射板以及LED光源的相對(duì)位置,得到四種不同的安裝方向。通過(guò)分析得到1)不同安裝方向?qū)?dǎo)光板光通量影響不大；2)散射粒子濃度對(duì)照度均勻性和光通量的作用是相反的,低濃度散射粒子更利于提高照度均勻性；3)平面層不含有散射粒子時(shí)更利于光線的傳導(dǎo),復(fù)合導(dǎo)光板的設(shè)計(jì)關(guān)鍵是應(yīng)保證一部分光線沿光源方向傳播,以提高照度均勻性。利用light tools模擬上述實(shí)驗(yàn)方案A/B和方案B/B,經(jīng)分析得到模擬與實(shí)驗(yàn)結(jié)果基本一致,可以利用light tools模擬代替實(shí)驗(yàn)分析。本文利用light tools模擬分析了V-Cut微結(jié)構(gòu)的高度、頂角和間距以及半柱形微結(jié)構(gòu)的高度、半徑和間距對(duì)導(dǎo)光板光學(xué)性能的影響。通過(guò)分析可知1)V-Cut微結(jié)構(gòu)的高度幾乎對(duì)導(dǎo)光板的各光學(xué)性能沒(méi)有影響；增大微結(jié)構(gòu)的頂角,導(dǎo)光板的平均照度、光通量以及照度偏差均有很大增加；增大微結(jié)構(gòu)間距,導(dǎo)光板的平均照度變化幅度小,照度偏差先減小后增加,光通量呈增大趨勢(shì)。由此可知,若導(dǎo)光板表面添加V-Cut微結(jié)構(gòu),微結(jié)構(gòu)的頂角對(duì)導(dǎo)光板的光學(xué)性能影響最大,微結(jié)構(gòu)高度對(duì)導(dǎo)光板光學(xué)性能幾乎沒(méi)有影響。若要綜合提高導(dǎo)光板的導(dǎo)光板性能,首先要選定微結(jié)構(gòu)的頂角,其次通過(guò)調(diào)節(jié)微結(jié)構(gòu)間距增加提高導(dǎo)光板的照度均勻性。通過(guò)模擬最好的微結(jié)構(gòu)參數(shù)為H=0.2mn,頂角為50度,微結(jié)構(gòu)間距D=0.9mm。2)隨著半柱形微結(jié)構(gòu)的高度增加,導(dǎo)光板的平均照度下降,照度偏差先增加后減少,光通量下降；隨著微結(jié)構(gòu)半徑增加,導(dǎo)光板的平均照度增加,照度偏差先保持平穩(wěn)后急劇增加,光通量增加；隨著微結(jié)構(gòu)間距增加,導(dǎo)光板的平均照度變化幅度小,照度偏差先增加后減小,光通量稍有浮動(dòng)。由此可知,若導(dǎo)光板表面添加半柱形微結(jié)構(gòu),微結(jié)構(gòu)的高度對(duì)導(dǎo)光板的光學(xué)性能影響最大。若要綜合提高導(dǎo)光板的導(dǎo)光板性能,首先要選定微結(jié)構(gòu)的高度,其次通過(guò)調(diào)節(jié)微結(jié)構(gòu)間距和半徑增加提高導(dǎo)光板的照度均勻性。通過(guò)模擬最好的微結(jié)構(gòu)參數(shù)為H=0.08mm,半徑為0.15mm,微結(jié)構(gòu)間距D=0.9mm。本文利用light tools分析散射粒子的折射率、直徑和濃度對(duì)導(dǎo)光板的光學(xué)性能的影響。其中,1)通過(guò)對(duì)散射粒子折射率的分析,發(fā)現(xiàn)當(dāng)散射粒子折射率接近導(dǎo)光板的折射率時(shí),導(dǎo)光板的綜合光學(xué)性質(zhì)差,隨著散射粒子折射率與導(dǎo)光板折射率差距增大,導(dǎo)光板的綜合光學(xué)性質(zhì)先提高后下降。當(dāng)散射粒子折射率為1.42和1.55時(shí),導(dǎo)光板的綜合光學(xué)性質(zhì)較好；2)隨著散射粒子直徑的增加,導(dǎo)光板的整體照度增加,導(dǎo)光板的照度均勻度先上升后下降,光效利用率增加。當(dāng)散射粒子直徑為3μm時(shí),導(dǎo)光板的綜合光學(xué)性質(zhì)最好；3)隨著散射粒子濃度的增加,導(dǎo)光板的整體照度增加,導(dǎo)光板的照度均勻度先上升后下降,光效利用率增加。當(dāng)散射粒子濃度為30000/mm3時(shí),導(dǎo)光板的綜合光學(xué)性質(zhì)最好。通過(guò)研究微結(jié)構(gòu)和散射粒子對(duì)導(dǎo)光板光學(xué)性能的影響,為今后研究復(fù)合導(dǎo)光板提供理論依據(jù)。
[Abstract]:The function of LGP (Light Guide Plate) is to transform the line light source into the surface light source. With the development of the LED industry, the demand for the light guide plate tends to be fine and diversified. But at present, there are some defects in the processing methods of the light guide plate. These defects are the fixed processing size, the complex process, the intermittent production, and the environmental pollution. Therefore, it is important to improve the processing method of the light guide plate for the application of the light guide plate. In this paper, a double layer composite microstructure scattering guide plate is produced by the co extrusion method. The method combines the micro structure with the scattered particle to improve the optical properties of the light plate, such as the average illumination, the illumination deviation and the light flux. The double layer composite microstructure scattering guide plate is prepared by using PMMA as the base material and the scattering masterbatch as additive, and six kinds of experimental schemes are obtained according to the concentration of scattering masterbatch added in each layer of the light guide plate. According to the relative position of the light guide plate in the LED panel lamp with the reflecting plate and the LED light source, the relative position of the light guide plate in the light panel lamp is obtained. Four different installation directions. By analysis, 1) different mounting directions have little influence on the luminous flux of the light guide plate; 2) the effect of the uniformity of the concentration of the scattered particles and the light flux is the opposite, and the low concentration scattering particles are more beneficial to the illumination uniformity; 3) the plane layer is more conducive to the conduction of the light, and the compound guide does not contain the scattered particles. The key of the design of the light plate is to ensure a part of light propagating along the light source in order to improve the uniformity of illumination. Using light tools to simulate the above experimental scheme A/B and scheme B/B, the simulation and experimental results are basically consistent with the experimental results. The light tools simulation can be used instead of the experimental analysis. This paper uses light tools to simulate the V-Cut microjunction The height, the top angle and the distance and the influence of the height, the radius and the distance of the semi cylindrical microstructures on the optical properties of the light guide plate. By analysis 1) the height of the V-Cut micro structure has no effect on the optical properties of the light guide plate, and the top angle of the microstructure is increased, the light flux and the illumination deviation of the light guide plate are greatly increased. Adding the distance between the microstructures, the average illumination variation of the light guide plate is small, the illumination deviation first decreases and the luminous flux increases. Thus, if the V-Cut microstructure is added to the surface of the light guide plate, the top angle of the micro structure has the greatest influence on the optical properties of the light guide plate, and the microstructural height has little effect on the optical properties of the light guide plate. In order to improve the performance of the light guide plate of the light guide plate, the top angle of the micro structure should be selected first. Secondly, the illumination uniformity of the light guide plate is increased by adjusting the distance between the microstructures. By simulating the best microstructural parameters of H=0.2mn, the top angle is 50 degrees, the micro structure spacing D=0.9mm.2) increases with the height of the semi columnar microstructure, and the average illumination of the light guide plate. With the increase of the microstructural radius, the average illumination of the light guide plate increases and the illumination deviation increases sharply first and the luminous flux increases. With the increase of the distance between the microstructures, the average illumination variation of the light guide plate is small, the illumination deviation increases first and then decreases, and the luminous flux is slightly floating. It can be seen that if a semi cylindrical microstructure is added to the surface of the light guide plate, the height of the micro structure has the greatest influence on the optical performance of the light guide plate. The microstructural parameters are H=0.08mm, the radius is 0.15mm, and the microstructural spacing D=0.9mm. is used to analyze the influence of the refractive index, diameter and concentration of the scattered particles on the optical properties of the light guide plate using light tools. 1) through the analysis of the refractive index of the scattered particles, it is found that when the refractive index of the scattered particle is close to the refractive index of the light guide plate, the synthesis of the light guide plate is found. As the refractive index of the scattered particle and the refractive index gap of the guide plate increases, the optical properties of the light guide plate will increase first and then decrease. When the refractive index of the scattered particle is 1.42 and 1.55, the comprehensive optical properties of the light guide plate are better. 2) with the increase of the scattering particle diameter, the overall illumination of the light guide plate increases and the illumination of the light guide plate is all When the evenness rises first and decreases, the utilization rate of light efficiency is increased. When the scattering particle diameter is 3 m, the comprehensive optical properties of the light guide plate are the best. 3) with the increase of the scattering particle concentration, the overall illumination of the light guide plate increases, the illumination uniformity of the guide plate rises first and then decreases, and the efficiency of light efficiency is increased. When the scattering particle concentration is 30000/mm3, the light guide plate is used. The influence of the microstructure and scattering particles on the optical properties of the light guide plate is studied, which provides a theoretical basis for the future study of the composite light guide plate.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TM923.01

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 劉建;內(nèi)添加型PET多層共擠光擴(kuò)散膜的制備與性能研究[D];西南科技大學(xué);2016年

，

本文編號(hào)：2107177