Light-Emitting Diode-Based Illumination System for In Vitro Photodynamic Therapy
Figure 4
(a) Homogeneity of the irradiance for the irradiation distance of 164 mm between the LED array and treatment area, and the rectangular area is approximately equal to the area of the standard multiwell plate used for PDT studies. (b) Under the six different attenuators, the irradiances of the rectangular areas were 0, 3.2, 7.0, 9.0, 12.7, and 20.3 mW/cm2, respectively.
