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光谱能量分布

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光谱能量分布描述光源辐射能(辐射功率)按照波长分布的情况。

光谱能量分布的做法

一般做法,以光谱辐射度(Spectral radiant existence)(或亮度、强度、通量)为纵坐标,用以波长为横坐标作图得到“光谱能量分布取线”来做表示。大多数的光谱测量中,并不需要知道光谱辐射出度(亮度、强度、通量)的绝对值,只要知道它们的相对值,以某一波长的光谱辐射出度(亮度、强度、通量)为100,其他波长者与其相比的百分数(通常以560nm者为100)。所以,光谱辐射出度(亮度、强度、通量)的相对值与波长的关系就为光源的“相对光谱能量分布”(Relative spectral energy distribution)。其相对应的关系曲线,就称为“相对光谱能量分布曲线”(Relative spectral energy distribution curve)。

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光谱能量分布
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