| 摘要 |
<p>An object of the present invention is to provide a light emitting device which emits light of deep yellowish color with high luminance. The light emitting device of the present invention comprises a light emitting element having a peak emission wavelength shorter than 490 nm, a fluorescent material for wavelength conversion which absorbs light from the light emitting element and emits light of a wavelength longer than that of the light from the light emitting element, and a filter which cuts off a part of a mixed light produced by mixing the light of the light emitting element and the light of the fluorescent material, wherein the light transmitted through the filter has a chromaticity coordinate on the chromaticity diagram according to CIE 1931 plotted in a region defined by a first point (x = 0.450, y = 0.450), a second point (x = 0.250, y = 0.650), a third point (x = 0.350, y = 0.750) and a fourth point (x = 0.250, y = 0.750) and in the region defined by a closed curve consisting of the monochromatic locus and the purple boundary.
</p> |
