Naqshadeynta nalka darbiga ee qorraxda ee Trapezoid waa qaab fudud oo moodada ah, oo ay dhiirigelisay qaab aan caadi ahayn.Xulashada laambada ee chip-ka lumen sare ee LED-ga iyo monocrystalline silicon photovoltaic panel oo tayo sare leh oo ay weheliso ilaalinta UV iyo gudbinta iftiinka wanaagsan ee PC diffuser.Si sahlan loo rakibo, biyuhu, badbaadinta tamarta, soo-gelinta caqliga.