Efficiency unit and energy conversion of UV ultraviolet LED

The “uv” in the UV energy unit is actually the abbreviation of the word “ultraviolet (ultraviolet)”. So what are the units of energy? First of all, let’s understand that the international common energy units are gigajoule (GJ), megajoule (MJ), kilojoule (KJ), and joule (J/joule).

Simply put, it is a kind of light intensity energy unit. The energy unit of light intensity is generally represented by J/m² and mJ/cm², that is, the light energy per unit area. So what is the conversion rate between these units?

1. UV energy unit conversion method

1J/cm² = 1000mJ/cm² = 1000000uJ/cm²

1J/m² = 1000mJ/m² = 1000000uJ/m²

1J/m² = 0.1mJ/cm²

In the parameter table of many uv energy meters on the market, there are not only “energy measurement range” but also “power measurement range”. In fact, simply speaking, the two are inseparable, because “energy = power * time”. Since power is mentioned in the formula, what is the unit of power in the instrument?

1 joule (J) = 1 Newton meter = 1 watt (W) second (S)

UV intensity unit conversion method:

1W/m² = 1000 mW/ m² = 1000000uW / m²

1W/m² = 1000mW/ 10000 cm² = 0.1mW/cm² = 100uW/cm²

And the unit of power: E = W *t

1 W = 10³ mW (milliwatts) = 106 uW (microwatts)