Architectural lighting is the field that concerns itself with designing lighting systems for human needs. The goal is to provide lighting that is comfortable, useful, and productive for daily life.
Horticultural lighting is geared towards plant needs. The goal is to design lighting that maximizes the quantity and quality of produce and other agricultural products.
Entertainment lighting is focused on telling a story through light. Moving our emotions and creating spectacles of light are the goals here.
Lighting in healthcare is an emerging field. The goal is to provide lighting that improves and maintains our physical and mental health. Ultraviolet light for disinfection and circadian rhythms are ongoing topics of research in this area.