At present, classroom lighting mostly adopts professional education lighting, that is, LED eye-protection classroom lights and LED eye-protection blackboard lights. Because of the high myopia rate of primary and secondary school students, more and more people advocate paying attention to students' vision improvement and classroom health lighting, so it is very important to choose appropriate educational lighting lamps to protect students' vision health.

1, excellent lighting

According to the national standard, all classrooms should be equipped with artificial lighting, and the average illumination value of classroom desktop should be not less than 300lx, and its illumination uniformity should be not less than 0.7; The blackboard in the classroom should be provided with local lighting, and the average illumination value should not be less than 500lx, and the uniformity of illumination should not be less than 0.8. If the average illumination of the desktop and blackboard is insufficient, and the blackboard is not specially set with illumination, it will easily lead to students' eye fatigue and need to be selected strictly according to the national standard;

2, no glare

The Hygienic Standard for Daylighting and Lighting in Primary and Secondary Schools points out that the uniform glare value (URG) of the classroom should not be greater than 19, and most of the lamps used for classroom lighting have serious glare problems, which easily lead to myopia of students, distract students' attention and affect learning efficiency, so special attention should be paid to the glare value when purchasing;

3. There is no danger of stroboscopic lighting.

Strobe has the most obvious effect on vision, which easily distracts students' attention. The stroboscopic phenomenon of traditional T8 fluorescent lamp is particularly serious when it is started and the voltage is unstable. When the current is stable, the light strobe (fluctuation depth) is also above 40%, and the light strobe of ordinary LED lamps is also above 20%. Studying in this environment for a long time is also easy to cause visual fatigue. The light strobe of professional LED educational lighting is less than or equal to 3.2%, which is much lower than the first two.