| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED lighting system realizing a light environment ensuring a feeling of satisfaction of its use in illumination in daily life without disturbing a physiological function of human beings adapting themselves to night time such as preparation of natural sleep at night intrinsic to human beings, with the physiological grounds. <P>SOLUTION: The system includes one or more single LED light sources, each having an LED light emitting element emitting light included in a wavelength band of 400-560 nm, a first phosphor exciting this light to light having a peak in yellow or green and a second phosphor exciting this light to light having a peak in red, and also includes a diffuser diffusing the light emitted from the LED light source. <P>COPYRIGHT: (C)2009,JPO&INPIT |
