Yah Li Toh, CLD, IALD, IES is the Principal of Light Collab, She graduated from architectural school of National University of Singapore and pursued Masters in Architectural Lighting design in Hochschule Wismar, Germany. She is one of the first 5 to be recognized with the Certified Lighting Designer (CLD) Certification. She is a professional member of International Association of Lighting Designers (IALD).