مقدمة
With the popularity of شاشات عرض LED, the glare problem has become increasingly prominent.
Glare not only affects the audience’s visual experience, but may also pose a threat to traffic safety, and even have an adverse impact on the ecological environment and people’s physical and mental health.
So, how to eliminate the glare of LED display screens? Don’t worry, this article tells you how to do it.
1. Causes of glare on LED display screens
1). Light source characteristics
1.1). Unidirectional luminous characteristics of LED
LED, as a unidirectional luminous light source, has a relatively limited luminous angle of about 120 degrees. This is like the beam of a flashlight; the light is concentrated in a specific direction, making the light in that area particularly strong.
When we look directly at the LED display screen, if we happen to be in this strong light area, our eyes will feel a dazzling brightness, which is glare. Imagine that at night, a strong flashlight shines directly into your eyes, and the instantaneous discomfort is caused by glare.
1.2). Reflection of the glass plate on the surface of the display screen
The surface of the LED display screen is usually covered with a layer of glass plate, which is like a small mirror. When external light, such as sunlight or indoor lights, shines on this glass plate, it will be reflected.
If you stand right on the path of the reflected light, you will see a bright “spot of light”, which is the reflected glare. This glare not only makes your eyes uncomfortable but also makes it difficult for you to see the content on the display.
2). Environmental factors
2.1). Projection of external light
External light, whether it is bright sunlight or indoor lighting, may become the “accomplice” of LED display glare. When these lights are projected onto the display, it is like sprinkling a layer of “light powder” on the display, making the entire screen bright.
Especially when the sun is shining directly, the strong reflection is simply impossible to look directly at.
2.2). The influence of background environment illumination
هل تعلم؟ سطوع of the background environment will also affect the degree of glare of the LED display. If the surrounding environment is dark and the display is bright, then the display is like a “little sun” and looks particularly dazzling.
On the contrary, if the surrounding environment is moderately bright and not much different from the brightness of the display, then the glare will be much reduced. It’s like when you look at your phone at night.
If the room is too dark, the phone screen will appear particularly bright, making your eyes uncomfortable, but if you turn on a small light, the brightness of the phone screen will not be so dazzling.
3). Display design
3.1). Improper brightness setting and high contrast
The brightness of some LED displays is set too high, just like suddenly turning on a strong light in the dark, making it difficult for the eyes to adapt for a while.
There is also the problem of too high contrast setting, just like the light and dark contrast of a painting is too strong, making people dazzled. Both of these situations will cause glare, making your eyes feel tired and uncomfortable.
3.2). Unreasonable display angle
The installation angle of the display is also very particular. If the display is installed too high or too low, or the tilt angle is wrong, it may cause light to directly enter your eyes or reflect into your field of vision, causing glare.
Just like when you are sitting in a movie theater, if the screen is installed too tilted, you may see the light on the screen reflected on the ceiling or wall and then into your eyes, making you feel uncomfortable.
3.3). High reflectivity of the display surface material
The glass plate reflection problem mentioned above is actually because the reflectivity of the display surface material is too high. Some displays use high reflectivity materials in pursuit of beautiful appearance and durability, but the result is glare.
Just like if you wear a shiny dress, it will be particularly dazzling in the sun. Therefore, it is also very important to choose a display surface material with low reflectivity.
In summary, the generation of glare on LED displays is the result of the combined action of multiple factors. In order to reduce or eliminate the glare phenomenon, we need to work hard in many aspects such as selecting light sources, controlling the environment, and designing displays.
2. What bad effects will glare have on LED displays?
The effects of glare on LED displays are many, and they are all very troublesome. Let me talk about in detail how glare “makes trouble” and the bad consequences it brings.
1). Make the display effect of LED display greatly reduced
Think about it: the picture on the LED display is as clear as a photo, and the colors are bright and bright.
However, once there is glare, the picture becomes blurry as if there is a layer of fog. Especially when sunlight or strong light shines on the screen, the reflected light spots make it impossible to see the content on the screen clearly.
The color also becomes strange. The bright red may become dim, and the blue may become blurry. In this way, whether watching movies, watching TV, or displaying advertisements, the effect is greatly reduced, which makes people feel uneasy.
2). Eyes suffer, and visual comfort is completely lost
Glare not only affects the display effect but also is particularly unfriendly to our eyes. If you stare at a screen with severe glare for a long time, your eyes will feel dry and painful, and you may even have symptoms of blurred vision and headache. Just like when you drive at night, your eyes can’t stand the flashing lights of the opposite car.
The same is true for watching LED displays. Glare is like that dazzling headlight that makes your eyes suffer. In this way, who would be willing to look at that uncomfortable screen for a long time?
3). Work efficiency is also affected
Glare will also interfere with our attention and make it difficult for us to concentrate on work. Think about it: if you are busy processing documents in the office, but the LED display next to you is always flashing glare, will your eyes drift over there unconsciously?
In this way, your work efficiency will definitely decrease. Especially for those jobs that require high concentration, such as design, programming, medical surgery, etc., glare is simply a “troublemaker,” making your work twice as effective with half the effort.
4). Brand image is also damaged
For merchants, LED display screens are an important window for displaying brand image. However, if the display screen is full of glare, it will leave a bad impression on customers.
Customers may think that this store is unprofessional and unreliable and thus doubt the brand. Especially in high-end commercial places or important events, a display screen with severe glare is simply a “minus point,” which greatly reduces your brand image.
5). Shorten service life and increase costs
Glare not only affects the display effect and brand image but may also shorten the service life of the LED display screen. If you expose the display screen to strong glare for a long time, its surface material may age faster, and the color may no longer be bright.
Moreover, glare may also damage the electronic components inside the display, making it more prone to failure. This means you have to repair or replace the display more frequently, which increases the cost.
3. Effective ways to eliminate glare on LED displays
Glare, this “little devil” that often messes up LED displays, always makes our eyes tired, and the viewing experience is greatly reduced. However, don’t worry. I have a few tricks in hand and am ready to help you solve this annoying problem easily.
1). Adjust the display settings:
1.1). Brightness and contrast adjustment:
Have you ever had this experience: when the sun is strong during the day, looking at the LED display is like looking directly at the sun, so dazzling that you can’t open your eyes? In fact, this is because the screen brightness is set too high.
We can appropriately reduce the screen brightness according to the intensity of the ambient light so that the eyes are no longer so tired. At the same time, increasing the contrast can make the picture clearer and the colors more vivid, which can also reduce the interference of glare on the vision.
The specific operation is also very simple. Just enter the settings menu of the display, find the brightness and contrast options, and then adjust them according to the actual situation.
1.2). Eye protection mode on:
LED displays are becoming more and more intelligent, and many of them are equipped with eye protection modes. This mode can reduce blue light radiation and reduce damage to the eyes.
For people who need to stare at the screen for a long time, eye protection mode is undoubtedly a thoughtful design. After turning on eye protection mode, you will find that the light on the screen has become much softer, and your eyes are no longer so easily fatigued.
1.3). Automatic brightness adjustment:
Sometimes, the ambient light changes, and we may find it troublesome to adjust the brightness manually. However, many LED displays have the function of automatically adjusting brightness.
This function can automatically adjust the brightness of the screen according to the changes in ambient light so that the viewing experience is always in the best state. It’s like having a caring little assistant to help us solve the glare problem at all times.
2). Anti-glare technology:
2.1). Anti-glare film and coating:
Imagine that if you stick an anti-glare film or an anti-glare coating on the LED display, it’s like putting a “protective suit” on the screen. This “protective suit” can effectively reduce the light reflected by the screen and reduce the generation of glare.
Anti-glare films and coatings usually have a special surface structure that can scatter light, making it soft and less glaring.
When choosing an anti-glare film or coating, we should pay attention to choosing a good quality product to ensure that its anti-glare effect is long-lasting and does not affect the display effect of the screen.
2.2). AG treatment anti-glare technology:
AG (Anti-Glare) treatment anti-glare technology is a more advanced anti-glare method. AG treatment makes the surface uneven on the surface of the screen.
In this way, when the light hits the screen, scattering occurs, and the light becomes soft and evenly distributed across the entire screen, thereby reducing the generation of glare.
AG treatment anti-glare technology is usually applied to high-end LED display screens, and its effect is significant and long-lasting.
If you have high requirements for the viewing experience, you can consider choosing an LED display screen with AG treatment anti-glare technology.
3). Improve ambient light:
3.1). Adjust indoor light:
Sometimes, indoor lights that are too strong or too weak will aggravate the glare problem. In order to create a comfortable viewing environment, we can adjust the indoor light appropriately.
For example, when the sun is strong during the day, you can draw the curtains or adjust the angle of the curtains to reduce the direct sunlight on the screen.
At night or in a dimly lit environment, you can turn on appropriate lighting equipment to increase the brightness of the indoor light.
When adjusting the indoor light, we should pay attention to keeping the light evenly distributed to avoid partial over-brightness or over-darkness so as not to affect the viewing effect.
3.2). Use blackout curtains:
If you think it is too troublesome to adjust the indoor light, you can consider using blackout curtains. Blackout curtains have good light-shielding properties and can effectively block external light from entering the room.
When the sun is strong during the day, draw the blackout curtains, the room will become much darker, and the glare problem will be solved.
3.3). Sunshade measures:
For outdoor LED display screens, sunshade measures are essential. We can use tools such as sunshades and parasols to block the sun and reduce the direct sunlight on the screen. In this way, even in a strong sunlight environment, a good viewing effect can be guaranteed.
4). Optimize the display screen design:
4.1). Reasonably design the display screen angle:
The angle of the display screen will also affect the generation of glare. If the screen is placed at an angle or the angle is not set properly, it is easy to cause light to reflect into the eyes and cause glare.
Therefore, when designing the installation position of the display screen, we should try to keep the screen at a horizontal angle with the eyes to avoid glare when looking at the screen from the side.
Specifically, the display screen can be installed directly in front of the audience’s line of sight, or the angle of the screen can be adjusted according to the audience’s viewing position to ensure the best viewing effect.
4.2). Use high-quality materials:
The material of the display screen also has a great impact on the generation of glare. If the material is not good, the light will easily reflect off the surface and cause glare.
Therefore, when choosing a display screen, we should try to choose high-quality materials with low reflectivity. In this way, the light will not be reflected randomly on the surface of the screen, and the glare problem will be effectively solved.
4.3). Intelligent adjustment system:
In order to more accurately control the brightness and contrast of the display screen, we can develop an intelligent adjustment system.
This system can monitor the changes in ambient light in real time, and automatically adjust the brightness, contrast and other parameters of the display screen according to the changes to maintain the best viewing effect. It’s like having a smart assistant to help us solve the glare problem at all times.
5). Other auxiliary measures:
5.1). Standardized operation process:
For complex display screens such as spliced screens, a standardized operation process is also one of the important measures to reduce glare.
When splicing screens, we must ensure that the gaps between the screens are uniform and tight to prevent light from leaking out of the gaps and causing glare.
At the same time, we must also pay attention to keeping the screen clean and dry to avoid the impact of dust and moisture on the display effect.
5.2). Strengthen employee training:
Last but not least, we must strengthen employee training. We must let employees understand the hazards and elimination methods of glare and improve their anti-glare awareness.
In this way, they will take the initiative to take measures to reduce the generation of glare in their daily work and provide a better viewing experience for the audience.
خاتمة
This article deeply explores the causes of glare on LED displays and proposes a series of effective methods to eliminate glare.
The implementation of these methods can not only improve the display effect and viewing comfort, but also protect the audience’s visual health and promote the sustainable development of LED display technology.
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