不同配光设计的LED黑板灯照明对老师产生的眩光分析

基于LED光源的新型黑板灯具逐渐应用于教室照明,但是从现场老师反馈的照明效果得知,LED黑板灯具照明存在不同程度的眩光问题。对老师产生直接或者间接眩光的原因,部分是由于黑板灯具安装的不合理性导致的,但更多的是灯具本身光学设计的不合理性造成的。本文选取了六款当前市场上常见的典型LED黑板灯具进行配光测试,在满足标准的要求下,对测试结果得到IES文件进行模拟仿真计算分析,通过数据来验证LED黑板灯具安装位置和C90/270面眩光的关系。根据黑板灯具不同方向的出光角度,通过数值模拟计算分析,给出了LED黑板灯具照明眩光存在的原因及优化设计方向。

Analysis on the Glare of LED Blackboard Lamp with Different Light Distribution Design to Teachers

New type of blackboard lamp based on LED source gradually applied in classroom lighting,but the feedback of lighting effect from teachers was that LED blackboard lamp had varying of glare problems.The direct and indirect glare to teachers was partly caused by the irrationality of the blackboard lamp installation,but more was caused by the irrationality of optical design.In this paper,six typical LED blackboard lamps that were common in the market were selected for the light distribution test.Under requirements of relation standards,testing results were simulated and analyzed based on IES files,and the relationship between the installation location of LED blackboard lamp and the glare of C90/270 direction was verified through the data.According to the light beam angle of the blackboard lamp in different direction,the reason for the glare of the LED blackboard lamp and the optical design were analyzed from simulation results.