Table 1.
Fluence rate (PpIX-weighted full spectrum), fluence (PpIX light doses), intensity of visible light (lux) and how many lux are needed for a complete photobleaching in two hours using the five different light sources. All numbers in the table are for the distance of 1 meter except for the last column (see distances for the last column in Table 2). The visible light intensity is shown for simplicity because it is inexpensive and very easy to measure without prior knowledge.
| Lamp Type | Fluence Rate–Full Spectrum (mW/cm2) | Fluence Rate–Full Spectrum–PpIX-Weighted (mW/cm2) | Fluence-PpIX Light Dose for 2 h (J/cm2) | Visible Light Irradiance (lux) | Irradiance Giving 100% Effect on PpIX (lux) |
|---|---|---|---|---|---|
| Overhead projector 400 W | 18.12 | 1.14 | 8.2 | 35,000 | 5000 |
| Slide projector 250 W | 2.04 | 0.17 | 1.2 | 5800 | 5000 |
| White LED lamp 50 W | 0.53 | 0.03 | 0.2 | 1630 | 12,000 |
| Red LED panel 18 W | 0.89 | 0.03 | 0.2 | 1420 | 5000 |
| Red LED lamp Aktilite 140 W | 5.20 | 0.16 | 1.2 | 17,840 | 5000 |