Solid state lighting

The unit introduces you to the new age of illumination using light-emitting diodes (LED) and their role in disruptive technologies such as human-centric lighting (HCL), horticultural lighting and visible light communications (VLC) alongside providing energy-efficient lighting. Topics include the basics of light, colour and human vision, radiometric and photometric descriptions of light, light quality measures, the characteristics of light-emitting diodes (LED), flicker, lifetime and reliability, LED drivers and the effects of light in the built environment in applications such as human wellbeing, plant growth and communication.

Laboratories cover radiometric and photometric characterisation of light using a spectrophotometer, the use of standard illuminants, working with colour spaces, performing lumen and light spectrum measurements using an integrating sphere and the implementation of IoT-based smart lighting control.