2014-01-012024-05-16https://scholars.lib.ntu.edu.tw/handle/123456789/668683摘要：近年來， 高效率固態照明技術愈來愈受到重視，其中二極發光體更是扮演關鍵性的角色。 傳統上， 利用二極發光體的燈具， 僅可以將二極發光體的光勻化， 但卻無法照亮遮光物的背面。和傳統二極發光體燈具最大的不同是， 本計畫的光導管可撓式設計， 可以將光以導引到一般直線光無法到達的陰影處， 讓光有效的覆蓋所有空間。 因此本計畫的設計理念， 是以光可以有效照明的面積來衡量高效率標準。 並非一昧追求傳統燈具的最大出光量。 因其光能量離開傳統燈具後， 僅能直線進行， 無法有效照亮所有空間死角。 光導管 (optical waveguide)， 是利用光在不同介質間的全反射來達成光傳播的目的。 因此， 光的前進路線， 在適當的條件下， 會隨著光導管的形狀來前進。 當我們在光導管的表面， 製作出微結構後， 光在波導內的全反射特性， 將會因為微結構的形狀與密度而改變， 形成光能量的逸散。 因此， 適當的設計光波導表面的微結構， 將可以控制光波導表面的出光量。 本計畫利用光導管上的微結構， 我們可以均勻的控制出光亮度。 因為光導管發光面積大， 僅需要在光導管末端處， 裝上二極發光體光源， 就可有效減少光照死角。 又光導管可做出撓曲的形狀， 因此特別適合照明如引擎室等複雜空間。 本計畫的研究將會促進對基礎微光學的進一步了解， 包含光學系統設計、光導管製作與封裝&#65377; 因此, 本計畫的研究成果將可推廣到台灣的光學產業中&#65377; <br> Abstract: In the past few years, solid state lighting is attracting more attention due to its energy efficiency, especially light emitting diodes (LED). Traditionally, optics in LED lighting can only homogenize light intensity distribution, but cannot reduce shadow behind objects. Unlike traditional LED lighting devices, we are proposing to use optical waveguide to guide light to every corner in space. In other words, instead of calculating how much light output, we put more focus on how to minimize shadow area to achieve maximum efficiency of LED lighting. Because light can only travel straight line in free space, we need a more effective way to guide light in space. An optical waveguide is a physical structure that guides electromagnetic waves in the optical spectrum by total internal reflection. With appropriate boundary condition, the light can travel along the shape of an optical waveguide. However, the condition of total internal reflection can be changed if we make micro structure on the waveguide surface. The light could leak out from the waveguide depending upon shape and distribution of micro structures. We are planning to make microlens on the surface of a waveguide to achieve uniform lighting and to guide light to space even behind blocking objects. Due to large surface of a waveguide, we only need to couple light at the end of a waveguide to achieve large area lighting. This feature is especially useful to light up space, such as an automotive engine compartment. It is hoped that fundamental technologies, such as optical system designs, waveguide and microlens arrays, could be established through this project. Eventually, knowledge learned through this project can be transferred into optical industry in Taiwan.光導管固態照明optical wave guidesolid state lighting