Lighting | small knowledge which is used to describe the characteristics of light source? - China lighting network

Describe the amount of light source is mainly talked about above total luminous flux, luminous intensity, brightness, such as optical measurement and its spatial distribution. They represent the corresponding radiation has a luminous effect, namely radiation can produce a sense of 'how many' light measurement. So light measurement is a kind of physiological psychological physical quantities, referred to as 'psychological physical quantities. In addition, in the lighting project, also need to know the color of the light source properties, such as illuminant chromaticity coordinates, color temperature or correlated color temperature, as well as the light source color rendering index. Much of this quantity is according to the regulations of light source of the relative spectral distribution of the radiation emitted by calculated formula of general lighting design mainly is to use the light source ( Including the lamps and lanterns) Various optical measurement is calculated. Under special circumstances, however, must also consider the radiation characteristics of the light source, such as some cultural relics museum exhibits lighting will be tightly controls the infrared radiation, ultraviolet light source in order to avoid causing damage to the exhibits. YanZhiXiang

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