Figure 2From: Plant lighting system with five wavelength-band light-emitting diodes providing photon flux density and mixing ratio controlLED panel supported with aluminum frames. Definition of x-y-z coordinates (A) and lead-frame radiators behind the LED panel cooled by cooling fans (B) are presented. Origin o is on the floor below the LED panel center. The surfaces of the four plates with 10 cm width surrounding the LED panel are glossy to reflect marginal light.Back to article page