What are the significance of several major parameters of LED street light source?

May 05, 2019


1 Luminous flux: How much light is emitted by the light source per unit time. For a luminaire, the simplest explanation is how much light is emitted in lumens (LM).


2 Light effect: The luminous efficiency of the luminaire is the amount of light that can be emitted by the unit power. Unit LM/W


3 light intensity: that is, the luminous intensity, the amount of light flux per unit angle is called the light intensity, and the unit is candela (cd).


4 Illuminance: Illuminance is the most commonly used indicator to evaluate the effect of streetlights. It refers to the amount of luminous flux per unit area. The unit is Lux (LX). Average Illumination: The average of the illuminances of all selected points within the calculated area.


5 color temperature: is the scale of the light source color, which is simply the color of light. The color temperature is yellow-white-blue from low to high. Generally, road lighting is used for yellow light (3000K or less), warm white (3000-5500K), and white (5500K-6500K).


6 Illumination uniformity: A parameter that measures the overall effect of road lighting in road lighting. Uniformity refers to the ratio of the minimum illuminance to the average illuminance in the calculation range. The higher the uniformity, the less dark areas on the road surface and the more comfortable it looks.