LED Lighting Terms

When designing outdoor lighting systems, wind safety is a top concern. Effective Projected Area (EPA)—the area of a fixture that

For human beings, light influences primarily vision and mood, whereas light intensity for plants is a determinant of whether they

Lumens are units of luminous flux that show how much light a light source emits per unit time. It measures

What Is Lumen Depreciation? The simple definition of lumen depreciation is the gradual reduction in lumen output in any particular

Lighting uniformity is defined as the ratio of minimum to average illumination on a given surface (Emin/Eav). If the illumination

What Is PPE? The ratio of the produced PPF to the applied electrical power in watts is a common way