UVLED curing machine common terms and units introduced
Luminous flux φ: the total amount of light emitted by the luminous body per second. Unit: lumens (Lm), indicating how much light emitted by the luminous body, the more light emitted the greater the number of lumens. General luminous flux for UVLED lamp beads and chip manufacturers to measure the luminous efficiency of the lamp beads.
Light intensity I: luminous body in a particular direction unit stereo angle emitted by the amount of luminous flux. Unit: candela (cd).
Illuminance E: luminous body irradiation in the illuminated object unit area of the luminous flux. Unit: lux (Lux) = lumens Lm / area m2. Of course, in the UVLED curing machine industry generally uses the power measurement unit: mW / cm2, the general industry said the light intensity, radiance, intensity are referred to illumination.
brightness L: luminous body in a particular direction unit stereo angle unit area of luminous flux. Unit: nits (mcd). For example, a luminous angle of 60 degrees of LED, then it is in a 60-degree angle of the vertebral body within the luminous flux.
luminous efficiency: the ability of electric light sources to convert electrical energy into light, expressed in terms of the amount of luminous flux emitted divided by the power consumption. Unit: lumens per watt (Lm / w). UVLED industry is generally commonly referred to as the photoelectric conversion rate, the general UVLED curing machine photoelectric conversion efficiency between 5% -20%.
life: in the simultaneous consideration of UVLED curing machine damage and beam output decay conditions, its integrated beam output reduced to a specific number of hours. Generally for the initial light source is 70%.