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影像测量仪光源的显色性

添加时间:2018-04-26
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光源显色性图

机器视觉影像测量仪光源的显色性是什么?

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光源显色性图

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研究发现,除连续光谱的光源具有较好的显色性外,由几个特定波长色光组成的混合光源也有很好的显色效果。如450nm的蓝光,540m的绿光,610nm的橘红光以适当比例混所产生的白光,虽然为高度不连续光谱,但却具有良好的显色性。用这样的白光去照明各色物体,都能得到很好的显色效果。光源的显色性以一般显色性指数Ra值区分:当Ra值为100~75时,显色优良;当Ra值为75~50时,显色一般;当Ra值为50以下时,显色性差。表3-3列出了几种光源的显色指数。


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