Research On Coupling Reading Comfort Evaluation In Library Lighting Environment

With the advancement of science and technology,VDT(VISUAL DISPLAY TERMINAL)devices such as computer display screens,mobile phone display screens,and tablet display screens have developed rapidly,and together with traditional paper books,they have become an important reading carrier in the library.At present,the "Architectural Lighting Design Standards" GB50034-2013 requires further improvement and refinement of the lighting specifications for library paper reading,and does not propose suitable for the simultaneous reading of VDT and paper in the general reading room of the library.Lighting specification requirements.Providing a reading environment suitable for multiple reading methods is the future direction of library lighting design.Through subjective evaluation experiments and SPSS data analysis,the paper analyzes the influence law and importance coefficient of different factors in the library on the coupling reading of VDT and paper and the reading comfort of paper books.In the coupled reading process between laptop and paper,the importance factors of different influencing factors in general lighting are: VDT background brightness(11.6%);desktop reflection coefficient(4.5%);light source color temperature(3.7%);desktop Illumination(0.7%).The importance coefficient of different influencing factors in the case of mobile phone and paper coupled reading is:VDT background brightness(14.8%);desktop reflection coefficient(4.8%);light source color temperature(4.5%);illumination uniformity(3.4%);desktop illumination(1.1%).In the coupled reading process between laptop and paper,the importance factors of different influencing factors in mixed lighting are: VDT background brightness(11.6%);desktop reflection coefficient(4.5%);light source color temperature(3.7%);desktop Illumination(0.7%).The importance coefficient of different influencing factors in the case of mobile phone and paper coupled reading is:VDT background brightness(15.8%);illumination uniformity(6.1%);desktop brightness(4.6%);light source color temperature(3.7%);rough paper Degree(1.1%);desktop reflection coefficient(0.3%).The background brightness of VDT has the greatest influence on reading comfort.The color temperature of 5000 K light source is beneficial to improve the comfort of coupled reading.The desktop with lower reflection coefficient is beneficial to improve the comfort of coupled reading.The uniformity of contrast in mixed lighting is better.high.In the process of reading paper books,the importance factors of different influencing factors in general lighting are: paper roughness(18.3%);light source color temperature(12.2%);desktop illumination(4.9%);desktop reflection coefficient(3.6%)).In the case of mixed lighting,the importance factors of different influencing factors were: paper roughness(18.3%);light source color temperature(12.2%);desktop illumination(4.9%);desktop reflection coefficient(3.6%).Paper roughness has the greatest impact on reading comfort;using 5000 K light source color temperature is conducive to improving the comfort of paper reading;using 500 lx desktop illumination is beneficial to improve the comfort of coupled reading.According to the influence law and comfort prediction model,the lighting design of the library of the new era can be optimized,which can provide a more comfortable lighting environment for paper and VDT reading,and provide theoretical and data foundation for multi-objective optimization of library lighting quality.