PROBLEM TO BE SOLVED: To provide an illuminator that is excellent in adjusting nutrient components of a raising body such as a plant.SOLUTION: An illuminator of embodiment is an illuminator for raising which emits emission spectrum including: a first wavelength component having light intensity in 600nm or more and 700nm or less a second wavelength component having light intensity in 500nm or more and less than 600nm, and a third wavelength component having light intensity 400nm or more and less than 500nm. In the illuminator, content (PPF-R) of a photosynthesis-effective photon flux of the first wavelength component satisfies 20% or more and 30% or less, content (PPF-G) of a photosynthesis-effective photon flux of the second wavelength component satisfies 25% or more and 35% or less, and content (PPF-B) of a photosynthesis-effective photon flux of the third wavelength component satisfies 40% or more and 50% or less to photosynthesis-effective photon flux to 3 wavelength components of the first, second and third wavelength components.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2017,JPO&INPIT【課題】植物等の育成体の栄養成分の調整に優れた照明器を提供すること。【解決手段】実施形態の照明器は、600nm以上700nm以下に光強度を有する第1の波長成分、500nm以上600nm未満に光強度を有する第2の波長成分、及び400nm以上500nm未満に光強度を有する第3の波長成分を含む発光スペクトルを放出する育成用の照明器である。前記照明器は、前記第1、第2、及び第3の波長成分の3波長成分の光合成有効光子束に対する前記第1の波長成分の光合成有効光子束の含有率(PPF-R)が20%以上30%以下、前記第2の波長成分の光合成有効光子束の含有率(PPF-G)が25%以上35%以下、及び前記第3の波長成分の光合成有効光子束の含有率(PPF-B)が40%以上50%以下を満たす。【選択図】図6
