As the main place for students to learn, the classroom's lighting environment directly affects students' eyesight, eye fatigue and attention. Therefore, a healthy scientific lighting environment is one of the necessary conditions for students to learn. At this stage, schools in our country basically provide illumination by combining natural light with artificial light source illumination. Today, I mainly introduce the lighting effects that the two classrooms I have tested can be achieved under the conditions of full artificial lighting.
In 2004, China issued and implemented GB50034-2004 "Architectural Lighting Design Standards", in which the standard values ​​of school building lighting in China are clearly defined. In addition, some other countries' relevant regulations are listed for reference. The sections related to the illumination requirements of the classroom are listed in Table 1. In the table, we can see that some countries' standards are set earlier than domestic ones, but the standard values ​​are even higher than the newly established standard values.
Table 1 Comparison of standard values ​​between classrooms at home and abroad (unit: lx) 
In order to obtain the ideal and accurate test data, we set the test time after 7 o'clock in the evening, and the test was started after the day was completely dark. The test area of ​​the two classrooms in this survey is the same, and the test area is shown in Figure 1 and Figure 2 below. The light source used in classroom 1 is the PHILIPS 36W T8 6500K double-ended fluorescent lamp. The classroom light source for Class 2 is the Tri-Genergy T6 L1336W/864 double-ended fluorescent lamp. The lamps in both classrooms are six 2 x 36W grille lights. The area of ​​each desk is 1.2 x 0.6 m, and the horizontal illumination test point is at the geometric center of the table. On the vertical center line of the blackboard, take 3 points horizontally and measure the vertical illumination. The test time is started 20 minutes after the luminaire is lit. The ambient temperature is 22 °C.
Figure 1 classroom test plan 
Figure 2 classroom real map 