桌上型人工光源之色溫與演色性對視覺績效及視覺疲勞影響之研究

Effects of Visual Performance and Fatigue Based on the Color Temperature and Color Rendering of Desktop Artificial Light

劉彥夫(Yen-Fu Liu)

指導教授 ： 吳志富

大同大學/設計學院/工業設計學系所/碩士(2009年)

摘要

本研究針對桌上型人工光源之演色性對視覺績效及視覺疲勞進行探討。首先分析一般閱讀燈光種類、照明方式、照度分佈、色溫、演色性並進行比較，且以三種同照度不同色溫之光源進行閱讀舒適感及圖文辨識度比較。結果顯示受測者色溫在6000K 左右的光源對於閱讀的舒適感(80%)是最好的，但是對於辨識圖像及文字6000K(75%)跟7300K(80%)則可以清楚的辨別，最後實驗則探討6000 K 在相同的照度，以三種光源種類(螢光燈/LED/LED 加擴散膜)，及兩種演色性(CRI 70/90)共六種組合燈光對於閱讀時產生之視覺疲勞影響，在主觀評量中6 種燈光下，4 款LED 光源之辨識度較高；在眨眼率實驗中，在6 種燈光下對於長時間閱讀之視覺疲勞增加是有顯著的影響，6 種燈光種類對於視覺疲勞增加並無統計上的明顯差異。

關鍵字

照明光源 ； 照度 ； 色溫 ； 演色性 ； 視覺疲勞

並列摘要

This research discusses the effects of color temperature and color rendering of artiticial light on visual performance and fatigue.The first part of the experiment analyzed and compared different types of general reading light, lighting manner, light distribution, color temperature and color rendering index (CRI). Results show that subjects at the light source of color temperature around 6000K is at the best comfort (80%) for reading. However, for differentiating between pictures and words, they can be clearly identified at 6000K (75%) and 7300K (80%). The color temperature of 6000K was further studied at the same illuminance based on three types of light sources (fluorescent, LED and LED with increased membrane) and two CRI (70 and 90), summing up to six types of lighting for examining visual fatigue during reading. Under the subjective assessment of these six types of lighting, visual comfort and differentiation rates are higher in the four types of LED lights. In the objective test of eye blinking rate, an increase in visual fatigue was found when reading for a long time, but statistics showed no significant difference between lighting and visual fatigue.

並列關鍵字

Color Rendering Index ； Color temperature ； Illuminance ； Artificial Light ； Visual Fatigue.

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