Subjective Evaluation And Experimental Research On The Light Environment Of Multimedia Classrooms In Colleges And Universities

With the continuous investment in education and scientific research in China,the popularity of multimedia classrooms and multimedia facilities as teaching conditions has been increasing.However,compared with traditional classrooms,multimedia classrooms are affected by the use of teaching equipment,and usually change the indoor lighting and lighting environment in the classroom during teaching activities.As a result,the indoor lighting environment of the multimedia classroom is not ideal,which exposes many visual and physical and mental health problems of college students.The impact has become a social problem that can not be ignored.At present,it is urgent to carry out research on the light environment of multimedia classrooms in colleges and universities in China.Firstly,this paper from the college students on the subjective feeling of multimedia classroom light environment,light environment for multimedia classroom related literature data collection,sorting and analysis,sums up and discusses the multimedia classroom light environment for students of visual,physical,psychological,learning efficiency and its influence on the development of the our country healthy lighting,energy conservation and environmental protection.Through to influence the student's visual clarity and comfort index of optical research,found in brightness index as a study to evaluate the quality of the classroom light environment has gradually attention,but the lack of aiming at the specific impact of quantitative research,lead to impossible to judge and measure the multimedia classroom indoor light environment influence on student's visual clarity and visual comfort.Secondly,based on the analysis of the current situation of multimedia use in our country,taking the typical multimedia classroom and equipment of Tianjin University as the experimental conditions,brightness,contrast and brightness contrast as the main evaluation index,in the case of changing the parameters of the indoor brightness are objective brightness and related parameters of the extraction and students subjective evaluation experiment.Finally,by analyzing and utilizing the obtained subjective evaluation data and experimental results of multimedia classroom light environment and combining with the operation definition of psychophysical threshold,the visual clarity and visual comfortthreshold of multimedia classroom light environment with brightness as the evaluation index are calculated.SPSS software was used for curve regression to further find the range and influence trend of visual clarity and comfortable brightness in multimedia classroom light environment.The results of this study can provide a basis for formulating and revising relevant regulations in the future,and provide a reference for the light environment design of multimedia classrooms in Chinese universities.