- 學位論文
水滴型輪廓LED照度均勻性之設計
Uniform illumination design of liquid droplet type LED
摘要
本論文的目的在於設計一個高功率發光二極體的一次光學模組(透鏡與光源間沒有其他介質)，改變光源發出來的光型。此論文主要是先了解發光二極體的光學特性，之後設計目標是盡量使光照度均勻分佈及改變發光二極體的光型。 本論文之光學設計為包含光線折射、反射與全反射等原理互相搭配而成的，並且推導出近似水滴線方程式用以改變發光二極體的光型，然後使用微小透鏡及稜鏡片讓光線轉換成平行光並計算出光跡路線的公式引導光線往稜鏡片集中跟放大。 本論文設計的水滴光學模組，經過軟體證實是可行的，也成功改變了發光二極體的光型，使打出來的光是一個水滴輪廓而且均勻度高達89%，也藉由稜鏡片的交錯搭配知道當使用兩塊稜鏡片時，方向不用特別的限制。 最後實做出水滴型輪廓光學模組證明理論是可行的，而且裝置在手機上的水滴圖形也是相當清晰，將來可以把這項技術應用在大尺寸的背光模組上，或者是改變探照燈上的圖案都是未來可以發展的方向。
並列摘要
The purpose of this thesis is to design a first-order (There is no other medium between lens and the light source) high-power LED module for changing the light type of light source. This thesis is to understand the light-emitting diode optical properties first, then to uniform the illumination and to change the light type of LED. The optical design of this thesis is comprised of light refraction, reflection, total reflection, other principles and drop lines approximate equations which are designed for changing light type of LED. Then converting the light of LED into parallel light with tiny lens and prism sheet and calculating the formula of light track route which can guide the light into the prism sheet and zoom out The water droplets module of the thesis is confirmed feasible by the software and successfully changes the shape of LED into water drop whose uniformity is up to 89%. And to derive a conclusion that there is no need to restrict the directions of two prism sheets from prism sheets cross-test. At last, I manufactured the water droplets module to corroborate the water drop theory, and change the shape of the searchlight in the future.