To provide a white light emitting device capable of improving at least one of glare felt because light intensity in a blue visible light region is strong, an effect on a circadian rhythm, and an effect on dental treatments.SOLUTION: A white light emitting device 1 of an embodiment includes: a light emitting diode 3 having a light emission intensity peak at a wavelength region of 380 nm or more and 480 nm or less； and a phosphor layer 5 including a plurality of phosphors and emitting white light in response to excitation by the light of the light emitting diode. The white light has a correlated color temperature of 2,500K or more and less than 7,000K, and an average color rendering index Ra of more than 85. When a wavelength at which a spectral intensity is maximum in an emission spectrum of the white light at a wavelength region of 380 nm or more and 490 nm or less is denoted by λ*, the maximum intensity is denoted by A*, and a spectral intensity at the wavelength λ* in an emission spectrum of black body radiation at the same color temperature of the white light is denoted by B*, a ratio of the intensity A* to the intensity B* (intensity A*/intensity B*) is 1.5 or less.SELECTED DRAWING: Figure 1【課題】青色の可視光領域の光強度が強いために感じる眩しさ、概日リズムへの影響、歯科治療への影響の少なくとも一つを改善した白色発光装置を提供する。【解決手段】実施形態の白色発光装置１は、３８０ｎｍ以上４８０ｎｍ以下の波長領域に発光強度のピークを有する発光ダイオード３と、複数の蛍光体を含み、発光ダイオードの光による励起により白色光を発する蛍光体層５とを具備する。白色光の相関色温度は２５００Ｋ以上７０００Ｋ未満であり、平均演色評価数Ｒａは８５よりも大きい。３８０ｎｍ以上４９０ｎｍ以下の波長領域の前記白色光の発光スペクトルにおけるスペクトル強度が最大となる波長をλ＊、最大強度をＡ＊とし、前記白色光と同一色温度の黒体輻射の発光スペクトルにおける前記波長λ＊でのスペクトル強度をＢ＊としたとき、強度Ｂ＊に対する強度Ａ＊の比（強度Ａ＊／強度Ｂ＊）が１．５以下である。【選択図】図１
