Inferior LED lights can hurt your eyes，but it can be detected by your phone.
Table lamps are an important lighting tool for people to study and work on a daily basis. Due to their long use time, they have become the most intimate products in our daily activities. In general, many people choose LED luminaires when purchasing luminaires because LED luminaires are energy efficient and have high brightness. However, CCTV 3.15 will reveal the existence of LED lighting fixtures. That is to say, some LED lights may have serious “stroke” problems. Long-term exposure to these conditions may cause headaches and eye fatigue, causing photosensitive epilepsy, resulting in loss of vision and distraction.
Therefore, when buying LED lights, remember to pay attention to the “stroboscopic” problem. In recent years, many “eye protection desk lamps” have appeared on the market. Normally, we can’t visually detect the presence of a “flash”, but we can use the phone to detect it by turning on the camera of the phone and aligning it with the LED. If there is high frequency flicker, it proves that the LED luminaire may have a serious “strobe” problem.
The reason for the formation of “stroboscopic” is the rapid change in the intensity of the light source. In fact, whether it is a traditional lamp or an LED lamp, as long as it works under AC drive, it will produce flicker. The existence of the “stroboscopic” problem depends on the speed and magnitude of the flicker. Blinking has a significant impact on moving objects within the viewing range. Under flash illumination, objects may appear to be discrete rather than continuous. This effect is called “stroboscopic.”
However, it should be noted that the use of a mobile phone camera to detect whether the LED light has a protective function, although this method has a certain foundation, but not rigorous. Since the method mainly relies on the refresh rate of the screen of the mobile phone to judge the “strobe” of the luminaire, it is affected by factors such as the screen refresh rate and the distance of the mobile phone. In addition, the table lamp without “strobe” is not necessarily an eye protection table lamp, because the eye protection table lamp also involves various factors such as color temperature, color rendering index and luminous flux. Today, many so-called “eye protection desk lamps” have not undergone rigorous scientific arguments and fair third-party testing. The rotating gyro method used to verify market strobe is very rough and cannot obtain accurate quantitative results, so purchase “eye protection”. Be careful when using the desk lamp.
