Selection of light output angle of deep UV LED lamp beads

It is well known that the sterilization effect of deep UV LED is affected by the efficiency of UV LED. The UV dose e (UJ / cm2) = average light power (UW / cm2) × The conversion formula between average optical power density and optical power is

It can be seen from the formula that the luminous angle is inversely proportional to the average optical power density of the object surface. The larger the luminous angle is, the lower the average optical power density of the object surface is. We use TracePro to simulate deep purple technology products l280-qsc1f30a700 and l280-qsc1f30a700-120 ° The luminous flux distribution at 6cm is shown in the figure below:

The remote ata-led626 led distribution photometer is used, and the two light output angles are also compared in the actual test. For details, please refer to the product specification of deep purple technology. It should be noted that in different application environments, we need to calculate the illumination range of uvc-led at different distances, and then design the optical angle.