The choice of classroom lights is very particular, and now the country has professional standards for classroom lights. Most of the lights are LED lights. And this kind of LED, first of all, there is no flicker, and there will be no glare. Not only that, but also anti-blue light, in a moderate state in terms of stability and color, not too bright, and not too many colors. Now the country also has corresponding standards for this kind of lamp. In the process of use, it is also necessary to meet these standards before it can be used normally.
What are the lighting standards for classroom lights
The average illuminance value of the desk is not less than 300lx, and the uniformity of illuminance is not less than 0.7. The classroom blackboard should be equipped with local lighting, the average illuminance should not be lower than 500lx, and the illuminance uniformity should not be lower than 0.8.
2. Not dazzling
The average glare value (urg) of the classroom shall not be greater than 19. According to the data, the glare value of traditional T8 bracket fluorescent lamps and LED lamps without glare treatment is greater than 20, which is easy to cause glare.
3. High color rendering index
The color rendering index of the classroom light source shall not be lower than 80. According to the data, the color rendering index of the traditional T8 bracket fluorescent lamp and the non-glare LED lamp is about 70, which is less than 80, and the color rendering index is less than 80. It distorts the image you see.
4. No stroboscopic hazards
Strobe has a significant impact on vision, easily distracting students and reducing learning efficiency. When the conventional T8 fluorescent lamp is unstable and the voltage is unstable, the stroboscopic phenomenon is particularly serious. When the current is stable, the strobe (fluctuation depth) is also greater than 40%, and the strobe of ordinary strobe lights is also greater than 20%. Studying time in this environment is also prone to visual fatigue. The flicker of LED educational lighting is less than or equal to 3.2%, which is much lower than the former two.
5. Moderate color temperature
The campus classroom lighting adopts 3300k-5500k color temperature light source. At present, the color temperature of LED educational lighting is mostly 5000K, which belongs to warm white light. However, many schools use traditional T8 fluorescent lights and ordinary LED lights. They have a color temperature of over 6500k and are cool white.
6. No blue light hazard
Ordinary LED lights do not have anti-blue light treatment, but they are harmful to human body. The educational lighting LED lamps are professionally treated to avoid the harm of blue light.