A quantum leap for the generation of mobile UV light used for penetrant and magnetic particle inspection: Instead of conventional glow-discharge bulbs, four light-weight and insensitive high-power UV LEDs with more than 10,000 hours operating time are used. Another white light LED, which is located in the front centre permits to change to white light mode simply by pressing a momentary push button. The lamp is ready to operate immediately after power-on, provides a high UV intensity and a uniform distribution of intensity. The grading into risk class 2 (according to the German standard EM 6) meets the requirements of working safety for a low UV radiation exposure.