光源設計在動畫片中可以成為壹種主觀的，加強式的，甚至是在某種意義上市比較任意的造型元素，但是他卻能在比較大的範圍下展現壹部動畫片的整體色調於所要表現的情感元素。但在動畫日益趨向三維的今天，三維動畫的光源設定比二維來的更加真實與富於質感，實現手段也來得更加方便。三維動畫的表現形式逐步走向於多樣化，三維動畫燈光設計的表現空間也越來越廣泛。良好的燈光效果是三維動畫成敗的重要方面。
The light source design can be a kind of subjective, reinforcing or, in a sense, arbitrary image element in cartoons. It is able to express the overall hue and emotional elements of an animated film in a larger scale. Currently, 3D becomes more popular in cartoons in that compared to 2D, its light source setting is more vivid and more convenient to apply. Representation of 3D cartoons is becoming diversified gradually and the representing space of 3D cartoon light design is getting wider. Good light effect is essential to a successful 3D cartoon.
該文通過對三維動畫中燈光的分析，結合《fantasy》三維動畫影片，研究了三維燈光的布光方法與布光原則，闡述了在三維動畫中燈光的作用。研究表明在三維動畫中可以依據燈光在布置時所起的作用將燈光分為主光源、輔光源和背景光。這就是三維布光的三點光經典設計原理，這可以使燈光布置更加接近真實世界的光源。三維動畫燈光設計的關鍵還要取決於動畫本身的流派和表現風格。《fantasy》屬於寫實動畫的定位，我們力求在光線的表達上達到逼真的狀態。使用三點布光的原理，打造真實的動畫場景，符合劇本所要表達的氛圍。
The paper explores the approach and principle of 3D light arrangement by analyzing the light setting in 3D cartoons as well as a representative film of Fantasy. It also gives account of functions of light in 3D cartoons. Findings of the paper shows that lights in a 3D cartoon can be divided into main light source, auxiliary light source and back light according to functions of light in arrangement. This is the classic 3-spot light design principle which can make the light arrangement more like real light source. Also, a cartoon’s genre and representation style determines its light design. Fantasy is oriented as lifelike cartoon style, and we are trying to make the light representation more lifelike. A vivid scene created in the 3-spot light arrangement principle can meet what the playbook requires.