Effective sterilization range of deep UV uvc-led?

When it comes to effective sterilization range, it should also be based on the concept of dose. Unfortunately, for a point light source, the intensity distribution of the illuminated plane is similar to the peak shape of Gaussian distribution, and there can be several times of intensity difference between the center and the edge. If the customer is asking this question rigorously, we should carry out more accurate optical simulation to calculate the intensity distribution on the plane. The simulation may not be accurate enough, but it provides a qualitative reference for our scheme design. The irradiation surface is not uniform, and the simulation tool can calculate it clearly.

When defining the luminous angle of the lamp bead, the angle of half of the peak intensity is used. It is suggested that the half position of the peak intensity on the plane should be defined as the effective range, and the dose should be calculated according to the half height position.

Because the light type of LED is spherical, the uniformity of intensity distribution is very different between near and far places. At 20cm, the proportion of effective irradiation area in the whole irradiated area is larger.