| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminaire for emitting light under which a user hardly has a sense of discomfort and the user can easily read characters in use under a low color temperature environment, and light which relaxes the user.SOLUTION: In an illumination device, a first LED emits white light having as chromaticity deviation of Duv-1.6 to -12 at a correlation color temperature of 1563K to 4500K, and a second LED emits white light having a chromaticity deviation of Duv+10 to -1.6 at a correlation color temperature of 1563K to 4500K. The illumination light has a low correlation color temperature, white light which makes the paper surface look white is emitted from the first LED, and white light having a low awakening degree is emitted from the second LED. Therefore, it is possible to emit light under which a user hardly has a sense of discomfort and the user can easily read characters in use under a low color temperature environment, and light which relaxes the user.SELECTED DRAWING: Figure 6 |
