What is LUX (LX)?

Surface illuminance metric (SI) unit. Defined as an illumination of one lumen per square meter. In contrast, sunshine gives 80,000 to 100,000 lux to the surface it hits. Also refer to luminance and candela.

More On This Topic

Link to This Definition
Did you find this definition of LUX (LX) helpful? You can share it by copying the code below and adding it to your blog or web page.
Written and fact checked by The Law Dictionary