Over the past few decades, the information age has developed rapidly, and people have gradually begun to use a variety of electronic displays to obtain information.
In recent years, LED display screen is extremely popular in the market, today, we mainly use this article to explore, LED screen harm eyes?
LED screen is harmful to the eyes?
There are four main basic specifications for LED screens: brightness, pixel pitch, viewing distance, and refresh rate.
We will look at these four basic specifications to explore how LED screens affect the eyes.
Brightness
LED screens are relatively bright, especially outdoor LED screens, which can reach 6,000 to 7,000 nits in order to make the image visible in a bright outdoor environment.
Cell phones, computers and other displays need to use ultra-close viewing, the high brightness of electronic devices may make people feel harsh, and in extreme cases the eyes will also produce a short retinal light spot. Unlike them, the appropriate viewing distance for LED screens is usually more than 1m.
The reason why electronic displays can cause damage to the eyes is because the blue light of the display is the highest energy wavelength, the eyes can not filter its light waves and thus damaged.
When our eyes are more than 0.5m away from the display, the blue light emitted by the LED screen into the eyes will be drastically reduced, therefore, the brightness of the LED display does not cause damage to the eyes.
Pixel Pitch
LED screens with different pixel pitches determine the clarity of the picture and the appropriate viewing distance for viewers.
The smaller the pixel pitch, the smaller the viewing distance for the audience, the clearer and more detailed the picture tends to be, the simpler it is for the audience’s eyes to view the information, and the eyes are not easy to be tired; the larger the pixel pitch, the farther the appropriate viewing distance is, the less the eyes are affected by the screen.
In terms of the difference in pixel pitch, LED screens with different pixel pitches will not cause damage to the eyes.
Viewing Distance
LED screen viewing distance for the pixel pitch figure 1 ~ 2 times, for example, the pixel pitch of 1 LED screen, it is appropriate to watch the distance of 1 ~ 2m, 1m above the viewing distance, LED screen is basically harmless to the eyes, 1mm pixel pitch for the LED screen, already belongs to the small-pitch display, the pixel pitch figure up, the viewing distance will only be further away from the eyes, Smaller impact on the eyes.
Refresh rate
Refresh rate determines the smoothness of the LED screen, if the refresh rate is too low, the LED screen will appear stuttering, long time watching will let the eyes produce visual fatigue. Therefore, when selecting the LED screen, try to choose a higher refresh rate LED screen, the viewing experience will be better.
Usually the refresh rate of 960HZ and above, it does not affect the eyes to watch, but if there is a camera to shoot the LED screen, you need a higher refresh rate to protect the shooting screen effect.
LED screen and LCD which is more harmful to the eyes
Contrast ratio
LED screen lamp beads regulated by the driver IC, higher contrast, the overall visibility of the screen is stronger, the LCD screen contrast is lower, the screen visibility is poorer, therefore, watching the LCD is more likely to make people feel visually fatigued.
Brightness
LED screen brightness is higher, the viewing distance is farther, to ensure that the screen is clear and visible in the case of no impact on the eyes, while the LCD brightness is lower, the ambient light is brighter, LCD screen may not be able to clearly watch, resulting in visual fatigue, and LCD viewing distance is closer, there will be a potential danger of blue light radiation to eyes.
Viewing Angle
Due to the characteristics of the LCD backlighting technology, when viewed from the side there may be light leakage and pattern distortion, in the wrong viewing angle to watch the LCD is very easy to let the eyes feel fatigue.
LED screen viewing angle is wider, basically does not affect the eyes.
Comprehensively speaking, LED screen is more friendly to the eyes, LCD if you do not pay attention to the viewing angle and time, it is easy to hurt the eyes.
Watching the LED display screen eye protection skills
Any electronic device can have a bad effect on the eyes if you don’t pay attention to avoiding some wrong ways of viewing.
Although the LED screen is less harmful to the eyes, but if we can pay attention to use some eye protection skills in the viewing process, will be better to protect our eyes.
Not close to watch
Although the viewing distance of the LED screen is not close, but some viewers may not be able to resist due to myopia and close to watch the LED screen, this behavior is a kind of wrong viewing behavior, may cause damage to the eyes.
In life, we should avoid such behavior, if the eyes are nearsighted, you can wear glasses in accordance with the appropriate distance to watch the LED screen.
Do not stare at the screen for a long time
Excessive eye fatigue will make the eyes, which is difficult to avoid weather watching electronic displays or other items such as books, so we can watch the LED screen for a period of time, try to use the eyes to look into the distance, or look at the greenery, to relieve eye fatigue.
Adjust the brightness
Adjust the brightness of the LED screen, so that its brightness does not interfere with the ambient light can be viewed, too bright LED screen will increase the pressure on the eyes to watch, and the screen consumes more energy, adjust the brightness of the LED screen without affecting the conditions of viewing the eyes more friendly at the same time also more energy efficient.
Conclusion
Overall, the LED screen is almost no harm to the eyes, but the overuse of anything will affect us, we need to learn to develop positive and healthy LED screen viewing habits, so that we can effectively protect healthy eyes in the long term.
