照明應用隨著科技發展與生活型態的轉變，現今人們對於居住環境與生活品質的要求越來越高，照明除了提供良好的明視環境之外，更轉變成空間氛圍的塑造，人們對照明的依賴，從視覺上的生理需求，更進一步的轉為燈光環境帶來的心理層面感受。近年來LED光源的開發與推廣，除了效率較傳統燈具具有優勢外，LED體積小可靈活搭配燈具、可以驅動電路決定其設計架構、以及多樣的顏色變化，在照明應用上，更能夠依使用者喜好彈性調整，達到使用者對於照明所期待需求。
本研究將探討彩色LED燈光帶給使用者的感受以及舒適度，希望了解彩色LED燈光帶給使用者的心理感受，日後照明設計相關工作者可參考本研究，更加掌握照明環境所產生的心理感受與舒適度感受，建構出適宜的照明模式與效果。
研究方法採用實驗室法，以四種燈光「顏色」及兩水準「亮度」作為實驗控制變項，讓受試者在實驗所設計之燈光空間中，評量事先選定的30個形容詞心理感受程度，同時感受在各種燈光下的舒適程度。結果顯示，燈光亮度的差異對受試者心理感受並無顯著影響，反之，燈光顏色差異對受試者心理感受有顯著影響。整體而言，紅色燈光帶給受試者「警覺的」感受最強烈，綠色燈光帶給受試者「陰森的」感受最強烈，藍色燈光帶給受試者「清涼的」感受最強烈，黃色燈光帶給受試者「明朗的」感受最強烈；所有燈光當中，以低亮度水準黃色燈光舒適度最高，高亮度水準紅色燈光舒適度最低。
研究結果可了解不同LED燈光帶給使用者的心理感受，以供照明設計相關領域參考，更加掌握照明環境帶給空間使用者的心理感受與舒適度感受，建構出適宜的照明模式與效果。

With the development of technology and the changes in lifestyle, people are increasingly demanding about the quality of products in their lives and living environment. The fundamentals of lighting before were only related to the quantity of light that was to provide light for people to see and cope in the visual environment also during the dark hours. Due to the development of light sources and lighting equipment, people have more choice on lighting equipment that is not only adequate in terms of quantity, but also meets the lighting quality demands. Today, LEDs are entering the lighting market and as new light sources, they enable new approaches to lighting design and practice. LEDs introduce new possibilities for tuning the color of light. Compared to conventional light sources, they are small in size giving also freedom for luminaire design to meet the users’ demands.
This study attempts to discuss if the changes to the color and brightness of lighting could affect users’ pleasantness of the visual environment. And also find out the psychological sense under different lighting surroundings. By realizing the feeling that each lighting condition brings to the users, lighting designers can provide proper lighting designs that precisely meet users’ different needs.
The study used color and brightness as two independent variables to build up the experiment environment. The subjects’ feelings toward the lighting surroundings are dependent variables. Thirty adjective terms that had been selected beforehand were used in the lighting experiment. The result showed that the changes to brightness of lighting have little effect on subjects’ feelings, while the changes of the colors of the light have significant effect on subjects’ feelings. Red light tends to make subjects feel alert, and green light tends to make subjects feel gloomy, blue tends to bring cool feeling, and yellow light tends to bring lively, lighthearted feeling. Subjects feel most comfortable under yellow light and feel least comfortable under red light.
The result showed by this study can be provided as an important reference for colored LED lighting. After knowing more about subjects’ feelings under different colored lighting, it’s easier to creat a lighting environment that fit different user needs.

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