| abstract |
The purpose of the present invention is to provide an illumination method whereby, in illuminance of 5 - 150 lx, the color appearance that humans perceive is not dependent on color rendition metric, visibility is increased, the color appearance of chromatic colors that humans perceive is made excellent, and a sense of brightness is improved, and also to provide a light emitting device for implementing the same. When the light output by the light emitting device illuminates an object, the light is illuminated such that light that is measured at the position of the object satisfies specific requirements. The light emitting device is characterized by the light output by the light emitting device in a main radiation direction satisfying specific requirements. |