UV-C LED disinfection device

An ultraviolet C (UV-C) disinfection device, comprising:

• a UV-C light-emitting diode (LED) illuminator comprising:
• a UV-C LED source module comprising:
• a heat spreader;
• and
• a UV-C LED chip that is mounted on the heat spreader which is configured to be mounted on a printed circuit board (PCB);
• a UV-C LED coupling module comprising:
• a holder;
• and
• a rod configured to carry a UV-C light emitted from the UV-C LED chip from a first distal end of the rod to an opposite second distal end of the rod such that the UV-C light gets leaks out from a side of the rod to deliver at least a portion of the UV-C light to a surrounding of the rod, with the rod secured with the holder positioning the rod onto the UV-C LED chip;
• and
• a UV-C sensor module comprising:
• a photo sensor mounted at the first distal end of the rod opposite to the UV-C LED chip, the photo sensor configured to monitor a light intensity of the UV-C light;
• and
• a signal processing unit configured to receive light intensity information from the photo sensor and to adjust an output power of the UV-C LED chip to maintain a constant level of the light intensity of the UV-C light.