電力 で ワット(W) to illumでance in lux (lx) calculator and how to calculate.
入力してください 電力 で watts, luminous efficacy in lumens per watt, surface area in square feet / meters or spherical radius in feet / meters and press the 計算 button to get the illumでance in lux:
* the predefでed luminous efficacy values are typical / average values.
The illumでance Ev で lux (lx) is equal to 10.76391 times the 電力 P in ワット(W), times the luminous efficacy η で lumens per watt (lm/W) divided by the surface area A で square feet (ft2)で割った値に等しい:
Ev(lx) = 10.76391 × P(W) × η(lm/W) / A(ft2)
The illumでance Ev で lux (lx) is equal to the 電力 P in ワット(W), times the luminous efficacy η で lumens per watt (lm/W) divided by the surface area A で square meters (m2)で割った値に等しい:
Ev(lx) = P(W) × η(lm/W) / A(m2)