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How to Calculate Lighting Uniformity?

Lighting is required wherever we go, especially indoors and during the night. To ensure proper lighting in a space, uniformity is vital. It helps improve user perception and allows one to clearly see the entire premises. Without uniform lighting, people would easily fall or accidents would occur. It is due to this reason that the government has made it mandatory for companies to provide adequate light uniformity at the workspace. However, light uniformity is required everywhere such as at the football court, gym, stadium, parking lot, and so on. If you want to learn more about light uniformity, you have come to the right place. This guide shares all the information that you could possibly need. So, what are you waiting for? Let’s start with the guide.

table of Contents
  1. How to Calculate Lighting Uniformity?
  2. What Is Light Uniformity?
    1. Light Uniformity Definition
    2. Light Uniformity Factor
  3. How to Calculate Light Uniformity?
    1. Light Uniformity Measurement
    2. Light Uniformity Formula
  4. Light Uniformity Standard
  5. Conclusion
  6. Related Products
  7. Related Blogs
  8. Related Case
  9. People also ask
  10. Author introduction

What Is Light Uniformity?

In the simplest of words, light uniformity refers to the uniformity of lighting in an environment. It is vital to maintain the uniformity of light in order to make sure that everything is perfectly visible in the room. When referring to the light uniformity of an area, the task area in which the objects and immediate surroundings are considered. The importance of maintaining an ample amount of brightness cannot be stressed enough. However, it is common for people to omit the calculation and measurement of light uniformity in a space. When the light uniformity is very low for indoor or outdoor lighting, it would lead to athletes, workers, or citizens feeling uncomfortable as their vision would be affected.

Light Uniformity Definition

The definition of light uniformity clearly states that the illumination of an area is produced by the lighting. The ratio of minimum illumination is usually mentioned when talking about light uniformity. There is a need for a sufficient amount of uniformity in lighting across the task area regardless of whether direct or indirect lighting is used.

Light Uniformity Factor

The light uniformity factor refers to the light’s intensity in a given area. According to EN 12464-1, office lighting should be a minimum of 500 lux on average for smooth reading, typing, writing, and data processing. The factor applies regardless of the condition or size of the structure in question. Our perception of the world around us is affected by lighting. Hence, lighting uniformity is crucial for navigation, and more. If there are breaks caused by lighting drops, it would hinder us from fully perceiving the space. The type of illumination impacts the uniformity as well as its position. Most focus-intensive tasks require a uniformity index of around 0.6, whereas, technical drawing and other demanding tasks require a ratio of at least 0.7.

  • How to Calculate Lighting Uniformity-Light Uniformity

How to Calculate Light Uniformity?

To ensure that proper light uniformity is provided, it is important to calculate light uniformity in a space. To help you calculate the light uniformity, the following will prove useful.

Light Uniformity Measurement

The lux meter is commonly used for measuring the brightness lux level. Then, we will get the figure required for the area. You might be wondering what you should do with the uniformity data. Now, it is unlikely that you will be able to measure the parameter using a single device since lighting uniformity refers to the ratio between the average and minimum lux or maximum and minimum lux. If you do not know what lux is, it is the unit of illumination which indicates the exact brightness that reaches on the ground.

Light Uniformity Formula

To measure light uniformity, the following formula comes in handy.

U1 = E (minimum) / E (average) U2 = E (minimum) / E (maximum)

U stands for uniformity and E stands for illumination respectively. From the above formula, it should be clear that light uniformity is basically the ratio of the illumination or lux level. This uniformity ratio is extremely useful as it allows you to determine how the lights evenly distribute light onto the ground. If the difference between average and minimum lux is not high, the ratio would be high. It indicates better light uniformity. According to the national codes of practice, the minimum illumination needs to correspond with the recommended illumination levels. The general lighting scheme sets the uniformity levels at 0.6 and 0.8 as set by UK CIBSE and German DIN guidelines.

Light Uniformity Standard

There are different light uniformity standards that need to be followed depending on the nature of the environment. For instance, if we take a football field, the following standard must be followed. Please refer to Football Field Lighting Design.

Nature of the Sports Field Illumination Required U1 Light Uniformity
Class I such as for a National Competition 1000 to 2000 lux ≥ 0.7
Class II such as for a League 200 lux ≥ 0.6
Class III such as for a Training Ball Field 75-200 lux ≥ 0.5

You must have noticed by checking the above that the lighting uniformity standard increases as the competition level of the Field increases. On the other hand, if the field is designed for recreational and training purposes, the illumination and uniformity requirement would be less. The lighting requirement tends to be rigorous in the case of televised and national matches.

Industrial and Commercial Lighting Uniformity Requirement.

The AreaThe Light Uniformity Standard
Sports Field0.5-0.8
Office0.4-0.6
Parking Lot0.4-0.5
Warehouse0.4-0.6
Running Track0.3-0.5
Airport0.2-0.3
Road lightingU0 between 0.35 and 0.4; UI between 0.4 and 0.7

There is no harm in increasing high uniformity lighting as it helps improve the vision of road users and workers at night. However,the more complex the lighting system is the higher the cost of illumination. Thus, you need to bear the cost if you want to increase uniform illumination. The best way to beat costs is by getting LED lights from ZGSM.

Conclusion

Once you have gone over this post, you will know everything about light uniformity. Although it is crucial to achieve high uniformity in the task area, research reveals that too much uniformity reduces alertness in people and makes them get exhausted more easily. This is why there is a need to create some contrasts on the walls. Make sure to purchase LED lights from ZGSM as the company provides the best lights.

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People also ask

Our impression of the surroundings and our ability to traverse it are impacted by lighting consistency. We can continually observe our world without abrupt interruptions brought on by changes in illumination levels thanks to uniform lighting. In outdoor applications as well, homogeneity of lighting and illumination is crucial.

The uniformity was determined based on the road's brightness. Table 3 depicts the uniformities of highways. The measured pathways correspond to the M3 lighting class, the necessary longitudinal uniformity standard (U1) is 0.6, and the target value for overall uniformity (U0) is 0.4.

In order to brighten the tennis court, it is essential to have a high degree of light homogeneity. This indicates the ratio of lowest to highest lux. Generally, 0.6 to 0.7 light uniformity is sufficient.

Author introduction

About the author
Author

Hello Customers,

My name is Taylor Gong, I’m the product manager of ZGSM Tech. I have been in the LED lights industry for more than 13 years. Good at lighting design, street light system configuration, and bidding technology support. Feel free to contact us. I’m happy to provide you with the best service and products.

Email: info@zgsm-china.com | WhatsApp: +8615068758483

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  • Home
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    • led street light

      LED STREET LIGHT

      1000w led stadium lights

      High Mast Light

      LED Flood Light

      tunnel lights

      LED Tunnel Light

      LED High Bay Light

      best led grow lights for indoor plants

      LED Grow Light

      LED Canopy Light

      red green yellow LED Traffic Light

      LED Traffic Light

      LED Garden Light

      adapter

      LIGHTING ACCESSORIES

      Solar Street Light

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