How to determine nits brightness？

When you spend manpower, material resources and financial resources to design the size and content of your advertising screen, when you blindly install it without considering the situation on site, everything is actually useless. In the installation of various displays such as advertising screens, an important factor that should be involved is brightness. As the name implies, the luminous intensity per unit area is brightness. The unit of brightness is cd/m², which is read as Candela per square metre. In the display industry, the brightness is set as nit by LED display manufacturers, and nit is equal to CD/m² (also known as candle light per square meter). A nit is a unit of measure for the total brightness of an LED display in one square meter. This value takes into account all factors that affect brightness, such as the number of LEDs per pixel, pixel pitch (distance between pixels), and the brightness of individual LEDs. Nits are used to measure the brightness of screens such as LED displays, LCD displays, mobile phone screens, TV screens, etc.

Important to choose the right brightness nits

brightness, the greater the nits , and the power consumption of the display will also increase. At the same time, watching a high-brightness display for a long time will cause visual fatigue to the eyes . However , low brightness is not a good thing. Although the power consumption will be less and the eye irritation will be less, but the brightness is too low, the details of the picture will be unrealistic, the dark details will be darker, the color difference will be shifted, and the It brings a very poor audience experience, so it is extremely important to choose the right LED display brightness.

Brightness is a crucial parameter in LED displays. When purchasing an LED display, it is not that the higher the nits , the better. The perfect presentation of the brightness needs to be based on the on-site conditions of the installation site .

Factors to consider when choosing brightness :

  • Use in indoor or outdoor scenarios
  • Is it possible to adjust the brightness

main points to consider when using a screen outdoors : how much it competes with sunlight , and how long it competes with sunlight . Ensuring that your sign is successfully read by passersby is critical. The higher the brightness , the better it can compete with sunlight .

Generally, the brightness requirements of indoor and outdoor LED display are different. For example, indoor requires nits greater than 800-1200 nits , while outdoor requires brightness greater than 4000-8000 nits . The brightness requirements of the display will be higher, so you should pay attention to this when choosing an LED display.

Important auto brightness nits sensing function

display has two options: automatic light sensitivity adjustment and manual brightness adjustment. In the case of sufficient budget, it is more recommended to choose a screen with automatic light sensitivity adjustment , which can save you most of the trouble of adjustment. There are light-sensitive elements, which can automatically identify the external brightness and environment and automatically adjust the screen brightness to achieve the best quality results.

By the way, the LED doesn’t burn out because the nits are too high , but it dims with usage. The dimmer an individual LED gets, the less effectively the entire screen competes with sunlight . Start with a brighter screen to ensure your logo will be readable for many years to come.

For LED displays, don’t turn the brightness too high . For example , the BAITRONICS RL maximum brightness of the outdoor LED display is 7000 nits, if it is manually adjusted to more than 7000 nits, it is beyond the range it can bear. It will have a reduced lifespan and more damage . At the same time, in order to avoid light pollution and comply with environmental regulations, the brightness of  billboards during day and night adopts different standards. It is known that reducing the brightness will lose more or less grayscale, so the greater the brightness adjustment, the more grayscale is lost. If the initial brightness value of the LED display billboard is set to 12000 nits during the day, and the brightness is lowered to 800 nits at night, it will be extremely gray, and the display screen will be poor or the brightness cannot be adjusted to the night standard requirements, which will cause serious light pollution.

How can I control the brightness nits to reduce the impact on the environment?

From the manufacturer side :

  • Standardized LED advertising screen blue light output, brightness is a parameter based on human eye perception characteristics. Different wavelengths have different perceptions . Therefore, outdoor display manufacturers should reduce the blue light output component of the display when the initial setting of the screen meets the display conditions.
  • Standardize the output frequency of the advertising screen and express safety measures in the user manual. Display manufacturers should strictly follow the design requirements of the specification, and the output frequency of the display screen should meet the specification requirements to avoid screen flickering and cause discomfort to the viewer, and note in the user manual. It explains the precautions for use and the correct way to adjust the brightness of the LED display. Looking directly at the LED display for a long time may cause damage to human eyes.
  • Take protective measures during the design and production of LED displays. Design and production personnel will come into contact with LED displays more frequently than users. During the design and production process, the LED overload operation state needs to be tested. Therefore, design and production personnel are more likely to be exposed to strong LED light, and should pay more attention to the design and production of LED screens and take special protective measures. During the production and testing of outdoor high-brightness LED displays, relevant staff should wear black sunglasses with a brightness attenuation of 4-8 times to view the details of the LED display at close range. In the process of indoor LED display production and testing, relevant personnel must wear black sunglasses with a brightness attenuation of 2-4 times. Especially in the dark environment, the staff who test the LED display should pay more attention to safety protection. They must wear black sunglasses to see directly.

From the client side:

  • Adjusting the brightness of the display according to the environment The main purpose of adjusting the brightness is to adjust the brightness of the display according to the intensity of the ambient light. When using the screen, the user should adjust the brightness of the entire display according to the local sunlight conditions and the actual brightness of the environment, so that the screen looks clear and bright without being dazzling. The ratio of the brightness of the brightest sunny day to the brightness of the darkest period can reach 30,000 to 1, and the corresponding brightness settings vary greatly. However, there is currently no brightness specification configuration, and users should adjust the brightness of the LED display in time according to environmental changes.
  • Standardize the light distribution and direction of the LED display When installing and selecting the location of the display, try to consider the rationality of the light distribution of the display and the uniformity of the light energy distribution output by the display. The LED is displayed in all directions within the viewing angle range to avoid the glare of the LED with a small viewing angle of the human eye. At the same time, the illumination direction and range of the LED should be limited to reduce the pollution of the LED display to the surrounding environment. When encountering a dazzling display in a dark environment, do not look directly at the electronic display for a long time or carefully identify the picture details on the electronic display, and try to avoid the formation of bright spots on the fundus of the LED after focusing on the eyes, which will burn the retina. If the user is still not sure about the brightness of the display, you can consult the manufacturer of the display to adjust the maximum brightness of the display without affecting it.
How to determine nits brightness-baitronics