Fabrication and application of optical lens by dispensing technology

• Main Authors: Chiung-Tang Tsai, 蔡烱堂
• Other Authors: Rong-Seng Chang
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/863qkb

碩士 === 國立中央大學 === 光電科學與工程學系 === 106 === 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.