Light pollution such as glare, stroboflash, glisten, rays shade, projection and so on, which caused by fluorescentlamp, can injure eyes seriously;
日光灯源所产生的眩光、频闪、反光、光帘、投影等光污染现象，严重损害眼睛；
2
The material of back cover shade uses polycarbonate. Power source is used with general fluorescentlamp(T8).
透明罩壳选用聚碳酸脂，光源使用普通T8荧光灯管。
3
Moreover, PS theological phenomenon is analyzed and the basic method for determining the extrusion moulding conditions of PS fluorescentlamp-shade is developed.