Based on the theory of subjective brightness of human eyes,this paper proposes a blackboard lamp lighting design that combines Fresnel extrusion lens,reflector and diffuser.The optical simulation and optimization are carried out by software,and the actual sample test is made.The measured average illumination of the new LED blackboard lamp developed reaches 726.6 lx,and the illumination uniformity reaches 0.857.At the same time,it reduces the user's uncomfortable glare feeling and realizes a good lighting experience that is suitable for the use of the blackboard.
关键词
黑板照明/眩光/照度均匀度/人眼主观光亮度/菲涅尔透镜
Key words
blackboard lighting/glare/illumination uniformity/subjective brightness of the human eye/fresnel lens
维普
万方数据