What is Illuminance？
The illuminance is the luminous flux (lm) in relation to a surface (m2) and
it is indicated in Lux (lx). It is used to measure the brightness with which a
surface is illuminated.
What is colour temperature？
The colour temperature is a specification of the colour appearance of a
white light source and is measured in Kelvin (K). The lower the colour
temperature, the warmer the light colour; the higher the colour
tempera-ture, the cooler the light colour.
What is colour rendering index (CRI)?
The colour rendering index is a parameter that can be used to compare
the colour rendering quality of light sources at the same colour
temperature.The higher the value, the better the colour rendering.
What is luminous efficacy?
The luminous efficacy is the ratio of the luminous flux and the wattage
absorbed. It is used to measure the operating efficiency of the light
source.It is indicated in Lumen per Watt (Im/W).
What is luminous flux?
It is indicated in Lumen (lm). The luminous flux indicates the light output, i.e. the quantity of light a source emits. The value may be subject to measurement and production-related fluctuations of ± 10%. The higher the value, the better the colour rendering.