Meng Fanpu’s scientific contributions

The quality of the indoor lighting environment in the reading space of the university library is essential for students' visual perception, emotional evaluation, and cognitive efficiency. The design of the lighting environment considering the change of natural light is one of the important development directions to improve the light environment quality of the reading room and meet the health requirements of students. This paper from the perspective of reading vision, emotion, and cognitive probes into the natural light environment lighting design, builds a reading lighting environment laboratory, using subjective evaluation, task performance, and physiological indicators of the measurement method, first analyses the weight of different indicators under different time, establish lighting environment comprehensive evaluation index I and artificial illumination and desktop illumination prediction model. The experimental results show that experimental results show that visual discomfort and clarity are the key factors in the early and later stages. In the transition phase, emotional indicators become particularly important. The model of dynamic lighting design scheme during 17:30–20:30 is: y = 227753.1746–900120.63492x+ 1179428.57142x2-512000x3, R2 = 0.99702; the fitting formula of desktop illumination in 17:30–20:30 period is: y = 566.666667–197.08995x + 158.73016x2-37.03704x3, R2 = 0.95238. The results aim to provide a theoretical basis for the design and optimization of dynamic lighting under natural light in the library reading room.