Pourquoi l'éclairage de la salle de classe répond aux normes de santé est si important
In the general consciousness, it is "well known" that light affects vision, but the perception of the degree of impact is different. In fact, in addition to some congenital heredity, poor classroom lighting environment is one of the direct main reasons for students' myopia. The classroom is too dark, and the problem of stroboscopic light will lead to changes in the refractive system of the students' eyes, excessive adjustment of the intraocular muscles, and the occurrence of myopia. Everyday, using the mobile phone to turn on the lens and point it at the fluorescent light, the stroboscopic mobile phone screen that is invisible to the naked eye can be "recognized" - the screen will appear striped. In addition, long-term study in poor classroom lighting environment will easily lead to low-light bending or even lying on the table, causing students who are in the critical stage of development, growth and shaping to "can't stand up straight" or damage to their cervical vertebrae.
The "color rendering index" (referred to as the CRI for short, the index that evaluates the ability of a light source to display the original color of an object is called the color rendering index) is a lighting index that has received less attention. A high CRI is conducive to improving students' ability to recognize colors. The color rendering index of fluorescent lamps and low-quality LED light sources is around 70, that is, about 30 percent of the original color of the object is lost, and the color rendering ability of saturated red (R9) is generally low, or even negative. Long-term study in such a classroom lighting environment will inevitably lead to the decline and decline of color discrimination ability, resulting in color weakness and poor color discrimination ability.
L'efficacité d'apprentissage des élèves est indissociable de la température de couleur (l'indice d'évaluation de la couleur émise par la source lumineuse) : lorsque la température de couleur est inférieure à 4000K et que la lumière est douce, il est difficile pour les élèves de se concentrer. La température de couleur est supérieure à 6000K et la lumière est blanche et facile à exciter et à fatiguer. Des études ont montré qu'une température de couleur de 5000K est plus adaptée à l'apprentissage, ce qui est plus efficace pour les enseignants et les élèves.
On peut voir que le respect des normes sanitaires d'éclairage de la salle de classe est l'un des moyens d'empêcher efficacement les élèves d'avoir des problèmes de sous-santé. Il doit non seulement répondre aux normes nationales, mais également atteindre l'objectif de prendre soin de la croissance saine des étudiants en termes de divers coefficients d'indice.
