| Title |
Study on Analysis of Characteristics of Illuminance and Luminace Distribution of LED Luminaires |
| Authors |
Jin-Sook Lee ; Won-Do Kim ; Byoung-Soo Kim ; Won-Tak Han |
| Keywords |
LED Luminaire ; Uniformity ratio of illuminance ; Mock-up |
| Abstract |
This study is intended to compare physical properties of fluorescent luminaires with ones of LED lwninaires so as to analyze fundamental characteristics of LED luminaires. For this, a comparative analysis of uniformity ratio of illuminance and luminaires distribution of these two luminaires was made, and materials for applying LED luminaires to interior construction space were prepared. This study was carried out in four stages. First, a theoretical review on LED illumination light source was made compared with the existing luminaires. Second, a mock-up to control experimental variables to meet the objective of this study was manufactured. Third, uniformity ratio of illuminance and luminance distribution of each luminaire were measured by using the mock-up. Fourth, a comparative analysis of uniformity ratio of illuminance and characteristics of luminance distribution of the existing fluorescent luminaires and LED ones was made. As a result of the ,study the uniformity ratio of illuminance of LED luminaires 0.569, was higher than one of the existing fluorescent luminaires, 0.522. Namely, it was shown that illuninance distribution of LED luminaires was uniform and global diffuse was good. As a result of measuring luminance distribution, it was found that luminance distribution of LED luminaires was more uniform than one of the existing fluorescent luminaires. The maximum luminance of fluorescent luminaires and LED luminaires over the wall was 180.6[cd/㎡]and 155.26[cd/㎡] respectively. Namely the maximum luminance of fluorescent luminaires was higher than one of LED luminaires. The average luminance of fluorescent luminaires and LED luminaires was 44.32[cd/㎡] and 58.65[cd/㎡] Like this, the average luminance of LED luminaires was higher than one of fluorescent luminaires. Considering these results, it’s thought that LED luminaires can give a person in the room a more comfortable working environment than fluorescent luminaires. |