Question 1

What is uniformity in street lighting?

Accepted Answer

To ensure proper lighting in a space, achieving uniformity is crucial. Uniformity is a measure of how evenly light is distributed on the road. The overall uniformity ratio is the ratio of the minimum brightness to the average brightness, and the longitudinal uniformity ratio is the ratio of the minimum brightness to the maximum brightness on the centerline of the same lane. If the uniformity is good, all objects on the road are easily seen by the driver.

Question 2

What are common values of illumination uniformity?

Accepted Answer

The common value for lighting uniformity is often referred to as U0. It is calculated by dividing the minimum luminance value (Emin) obtained from the current lighting arrangement by the average luminance value (Eavg). The value of U0 is influenced by factors such as the fixture type (spectrum), quantity, installation position and angle, and spacing (pole distance). For road lighting, for example, the recommended range for U0 is typically between 0.35 and 0.4.

Question 3

Why is light uniformity important?

Accepted Answer

The more uniform the light distribution, the better the illuminance, the more comfortable the visual experience, and the closer the illuminance uniformity is to 1, the better; otherwise, the smaller the illuminance, the more visual fatigue will increase. Of course, it is very difficult to reach 1. In most cases, U0>0.5 is already very good. Evenly distributed industrial lighting and court products balance the lighting of the entire work or court area, which is very helpful for improving visual satisfaction and reducing eye fatigue.

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Series H commercial street lights for square in Sendayan

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LED Street Light

Solar Street Light

Led Flood Light

Solar Flood Light

LED High Bay Light

High Mast Light

LED Traffic Light

LED Tunnel Light

LED Garden Light

LED Canopy Light

Led Bollard Light

Lighting Accessories

Smart Systems

Simulation Design

Smart Financing