建筑化照明发光顶棚的亮斑处理

Handling the Light Shining Ceiling of Architectural Lighting

探索发光顶棚亮斑的发生规律 ,降低发光顶棚上亮斑的亮度 .根据几何光学原理 ,将内壁光滑的 V形折板倒置于光源的下方 ,反射一部分由电光源直射的光通量Φ,降低光源下方透光面的光斑 .有效地降低了夹角 40°≤ β≤ 90°范围内亮斑的亮度 ,照度趋于均匀 ,获得了良好的感观效果 .

This paper explores the law how light spots of the shining ceiling happens so as to drop the brightness of light spots on the shining ceiling. On the principle of the geometrical optics, we may lay a V shaped folded plate structure under the light source for reflecting a part of luminous flux(Φ) of lighting point blank to drop the brightness of light spot under the light source. The efficaciously dropped brightness of a light spot is just of the angle of 40°≤β≤90° degrees. Thus its intensity of illumination is gradually wall distributed to gain good sense effect.