Quantity Catalog - Illuminance
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Illuminance refers to the measurement of the amount of light that falls on a surface. It is a crucial parameter in lighting design and photography, as it determines the brightness and visibility of objects in a given space.

Common units used to measure illuminance include lux, foot-candles, and lumens per square meter. Lux is the international unit of illuminance, while foot-candles are commonly used in the United States. Lumens per square meter is another metric unit used to quantify illuminance.

  • Illuminance is essential in designing effective lighting systems for buildings and outdoor spaces.
  • It helps determine the visibility and clarity of objects in photographs and videos.
  • Proper illuminance levels are crucial in ensuring safety and comfort in work environments.
  (illuminance base)  cd*sr/m^2

Illuminance is the measure of the amount of light falling on a surface, expressed in lux (lx).

  fc  fc

1 fc = 10.76391 cd*sr/m^2; The unit "fc" is used to measure illuminance, representing the amount of light falling on a surface.

  lux  lx

1 lx = 1.0 cd*sr/m^2; The unit "lx" is a measurement of illuminance, representing the amount of light that strikes a surface. It is equivalent to one lumen per square meter and is commonly known as lux.

  ph  ph

1 ph = 10000 cd*sr/m^2; The "ph" unit is a measurement of illuminance, representing the quantity of light per unit area.


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