UV LED has a great potential for various applications and devices, such as a sensor, an indicator, an air cleaning device, a resin hardening device, lighting and display, and even in biotechnology field. A curing unit equipped with 25pcs of UV LED Module (photo above) is for UV curing, one of the possible applications. The optical output power is more than 3W.
The above video demonstrates one of display applications for fun.
Nitride Semiconductors, a highly specialized supplier of UV LED, describes its self with four bullets, Cutting Edge (Waza in Japanese), Ecology (Yawaragi in Japanse), High Quality (Takumi in Japanese), and Fun (Tanoshimi in Japanese) that is quite impressive and right fit in the present world.
Source: Nitride Semiconductors