Views: 0 Author: Grace Publish Time: 2022-07-19 Origin: https://www.suntechleds.com/
The importance distribution of light is actually in the luminaire itself. With the right distribution of light, you can reduce the number of light fixtures and get better sustainable projects. So determining the light distribution of the luminaire is also a critical consideration. The pattern projected onto an object or surface defines how the light is dispersed from the lighting device. It is determined by the point that meets 50% of the luminous intensity of the fixture. We sometimes see these distributions used frequently in LED lighting categories, such as area lighting, road lighting, and parking lot lighting, to name a few.
The LED industry has identified 6 main types of light distribution patterns: Type I, Type II, Type III, Type IV, Type V, and Type VS light distribution. Wondering how to choose the right and correct led light distribution mode? In this article, we'll show and describe each type and how it can be used in LED outdoor area and spot lighting.
|Type I||Provides wide, symmetrical light, ideal for mid-side walks and narrow roads, use this light fixture|
|Type II||Presents a slightly wider light distribution, ideal for luminaires installed at the edge of the road.|
|Type III||The width of the projected light is approximately 2.75 times the installation height of the luminaire. Type III light distribution is the need to place luminaires on one side of the area, allowing the light to cast outward and fill the area.|
|Type IV||This type of light source is commonly referred to as a forward projection or asymmetric luminaire. Their light scatter and scatter width are 2.75 times their height, the same as Type III. However, they produce a more rounded distribution pattern that pushes the light outward, leaving a faint dim light behind the light source.|
|Type V||These omnidirectional luminaires distribute light in a consistent and uniform circular pattern around the luminaire.|
|Type VS||This light distribution has square symmetry and is essentially the same at all lateral angles.|
Feature: Type I is a bidirectional lateral distribution with a preferred lateral width of 15 degrees in the largest candela cone. The two main light concentrations along the road are in opposite directions. This type is generally suitable for luminaire locations near the center of the road where the height is approximately equal to the width of the road. In addition, looking at the longitudinal and symmetrical lighting of the street, the bidirectional illuminance is evenly distributed on both sides of the light pole. Therefore, we need relatively low power to lighting area, use LED lights ranging from 30W, 40W to 50W or 60W to light this area.
Application: Type I distributions are great for lighting Sidewalks/Footpaths, Narrow paths and Border lighting. Also, this type of lighting should be placed near the center of the aisle to provide adequate illumination for smaller aisles.