1. View strobe
Stroboscopic is actually frequency fluctuations, which can affect visual fatigue and headaches. Therefore, when buying, pay attention to picking up the mobile phone and aiming the lens at the light source of the desk. If there are stripes on the screen of the mobile phone or there is obvious stroboscopic flicker when the screen is jittered, then you must be careful to buy.
2. View Blu-ray
Working under blue light for a long time will cause damage to the eyes, so the photobiological safety level on the product should be checked when purchasing. This photobiological safety level is divided into: low hazard level, medium hazard level and high hazard level.
3. Check the color temperature
If you use led desk lamps that do not match the color temperature for a long time, it will affect people's eyesight. Therefore, when buying, pay attention to the color temperature range of 4000K-5000K is more suitable, this can be viewed on the product label.
4. View color rendering index
led desk lamp color rendering index will affect eye fatigue, so pay attention to the color rendering index when buying, a good color rendering index is around 90 or even 95.