The University of Kansas Lighting Research Laboratory was established in fall, 2010 by Dr. Hongyi Cai in the Department of Civil, Environmental and Architectural Engineering (CEAE) in the School of Engineering at the University of Kansas. The lighting research lab carries out research and teaching in the fields of of Solid-State Lighting, Daylighting, Human-Light Interactions through Visual Perception and Non-Visual Circadian Light Exposure, and High Dynamic Range (HDR) Imaging. The goal is to foster high quality, intelligent, healthy, efficient (energy, information, and system integration wise), safe, sustainable, and resilient luminous environments in buildings, city/urban areas, and transport infrastructure, which are adaptive to occupants’ needs and in rapid response to environmental changes.


  • Intelligent and integrative LED lighting and heating technologies, Lighting Application Efficiency (LAE) of solid-state lighting systems

  • Daylighting, daylight harvesting, climate-based daylight measurement and modeling

  • High dynamic range photography, photogrammetry (using one camera), stereo-photogrammetry (using multiple cameras in an array), computational photography, computer modeling & simulation

  • Light and health, light pollution and environmental sustainability

  • Human factors and ergonomics in lighting

  • Legibility of signs and human-computer interfaces, legible architectural and roadway environments

  • Luminous environment performance assessment, with a focus on lighting quality, visual clarity (legibility), energy efficiency, and environmental health and sustainability

  • Human-light interactive design & research


The lighting research laboratory is always looking for proactive and highly self-motivated graduate students as graduate research assistants (GRA). The ideal applicants for Ph.D. degree will have a master’s degree in relevant fields before he/she starts. Applicants with a bachelor’s degree will also be considered for M.S. degree.

Applicants will undergo the regular admissions process for the graduate programs at the University of Kansas. For further information about the graduate research assistantship or to apply please contact Dr. Hongyi Cai,, with the latest resume. Regular admission requires a bachelor's degree and a grade-point average of at least a B (3.0 on a 4.0 scale) from KU, regionally accredited institution, or foreign university with substantially equivalent bachelor's degree requirements.  For international students, there are English proficiency requirements.


Dr. Hongyi Cai, Associate Professor
Founder and Principal Investigator of the KU Lighting Research Lab

Voice: (785) 864-2597; Fax: (785) 864-5631
The University of Kansas
CEAE Department, 2134-C Learned Hall
1530 W. 15th Street, Lawrence, KS 66045, USA