目前常見的3D印刷透鏡技術，將材料進行加熱融化，通過噴嘴把材料擠出來，擠出後隨即會和前一層材料粘合在一起。但是層層堆疊情況下，透鏡表面為階梯狀。 因此本研究提出於利用噴射點膠方式製作透鏡，噴射閥優勢在於能穩定的提供微小劑量的膠水，且能夠適應不同黏度的膠水，目前廣泛適用於半導體封裝和組裝生產。實驗並利用成形過程能在室溫下快速固化的UV膠水，且讓膠水在固化之前合併，所以可以獲得非常光滑的表面，不需要任何後期處理。 所以此成形方法相當具有後製成的優點，可以輕易地與各樣不同需要透鏡的元件做整合，且無須製作透鏡結構的模仁及模具，在少量多樣的產品生產或開發時程都可大幅縮短，且降低許多成本。 本研究將透過膠水黏度與底板加熱的參數調整，提出改變接觸角的透鏡製作的探討，最後成功實做LED透鏡把大角度的亮度提升與將透鏡陣列利用於太陽能系統，減少太陽反射與增加二次折射，讓太陽能電池能有更高的光電轉換效率。 ;Common 3D printing lens technology, the material is heated to melt, through the nozzle to extrude the material, extrusion and immediately after the previous layer of material bonded together. However, when stacked in layers, the lens surface is stepped. Therefore, the present study proposes the use of jetting dispensing lens, the jet valve has the advantage of stable dispensing of a small dose of fluid, and can adapt to different viscosity of the fluid, is currently widely used in semiconductor packaging and assembly production. Experiment use a UV fluid that can be rapidly cured at room temperature and the fluid to merge prior to curing so that a very smooth surface can be obtained without any post processing. The dispensing method possesses the advantage of being post-fabricated, and can be easily integrated with various lens-required components without the need for lens molds and dies for lens construction. In a small number of diverse product development or development schedules, and reduce many costs. In this study, through the adjustment of the viscosity of fluid and the tooling heating, discussed the lens making process of changing the contact angle. Finally, the implementation of LED lens enhances the high-angle brightness and uses the lens array in the solar energy system to reduce the sun′s reflection and increase the second Refraction, so that solar cells can have a higher photoelectric conversion efficiency.
