Professor Steve Fotios
Professor of Lighting and Visual Perception
2015 CIE Waldram Gold Pin Distinguished Services Award
CEng, MEI, MSLL, MILE, PhD, BEng(Hons), FHEA, PGCE
T: +44 (0)114 222 0371
F: +44 (0)114 222 0315
I have taught in the School of Architecture since 2005, having previously taught at UMIST (1993-1998), Robert Gordon University (1999-2000) and Sheffield Hallam (2000-2005). I supervise research of lighting; how does lighting affect our perception of space and our ability to perform visual tasks.
I place a strong emphasis on methodology and how the manner in which experimental procedures will bias the outcome: this lead to the establishment of CIE technical committee TC1-80 to identify best practise in experimental procedures, and to LumeNet, a methodology conference for PhD students.
My teaching discusses heating, ventilation and lighting services using a bottom-up approach, questioning firstly whether there is a need for particular services, and then whether provision be met through design of the building form and format – a mixture of conservation and passive approaches. Is it possible for dwellings in the UK to be comfortable in winter without mechanical heating systems?
Of course in many situations mechanical systems are needed, and thus services are discussed to give the architect sufficient ideas for practice: what services are needed, where are the main items located and what size are they, and what questions should I ask the building services consultant? These ideas are delivered through lectures and tutorials for studio projects. Currently, my teaching centres on two areas:
This is what a former student thought of my teaching:
"Of course, any new housing wouldn’t be complete without insulation and central heating! This was the first time we have ever done a detailed services task and I think my naivety probably came through as this assignment took far longer than anticipated! However, Steve Fotios – a very enthusiastic module leader who remained passionate about every type of radiator, ventilation system and water system – had produced detailed notes which were a massive help! It is also worth mentioning that this submission wouldn’t have been the same without our very own tutorials from an ARUP engineer!"
PhD admissions, confirmations and progress monitoring
I am interested in lighting, visual perception and visual performance, for electric lighting and daylighting.
Postgraduate Research Supervision Interests
Research in lighting for pedestrians, drivers and cyclists; research methods for visual psychophysics.
Research Students and Assistants
Chris Cheal: PhD student (9/2003 to 8/2006): RA (2007 to present). Chris supports experimental research in the lighting and acoustics labs. He has developed novel apparatus for measuring visual responses – brightness, obstacle detection and eye tracking.
Scott Fox (02/2016 -): Highways England Project investigating lighting for drivers.
Jim Uttley: (11/2015 - ): Lighting for pedestrians and cyclists. Jim’s background in psychology makes him an excellent advisor for experimental work we do.
Current research students
Hussain Qasem (2014- ): Lighting for cyclists
Past PhD students
James Uttley (2012 - 2016): Establishing light levels for pedestrians
|Grants, Awards and Consultancy||
MERLIN-2: Further empirical evidence of lighting for pedestrians. £454,085. EPSRC award to S Fotios, June 2015.
MERLIN: Mesopically Enhanced Road Lighting: Improving Night-vision. £417,588. EPSRC award to S Fotios, March 2011.
Lighting for the classroom of the future; acceptability of screen glare. £31,009. EPSRC award to S Fotios (PI) & R Parnell (CI), May 2008.
Street Lighting: A metric for specifying white light. £172,936. EPSRC award to S Fotios, June 2008.
Obstacle Detection: Investigating the effects of source type and luminance. £26,780. Philips Lighting sponsored project, June 2007.
Research into the effects of road surface material on road lighting performance. £33,002. Department for Transport sponsored project, January 2005.
Research into the circuit wattage of discharge lamps used in public lighting. £30,282. Department for Transport sponsored project, June 2004.
Purchase of a spectroradiometer. £34,276. EPSRC award to S Fotios, July 2004.
White Light: an investigation of the perception of exterior lighting. £137,665. EPSRC award to S Fotios, June 2003.
|Professional Standing and Distinctions||
Institution of Lighting Professionals (ILP)
Society of Light & Lighting (SLL)
British Standards (BSI)
Illuminating Engineering Society of North America (IESNA)
International Committee on Illumination (CIE)
Founder of LumeNet, the international methods workshop for PhD students.
Organisation and planning
Member of scientific committee
VELUX Daylight Academic Forum
The VELUX Daylight Academic Forum is held in connection with the biennial VELUX Daylight Symposium. The aim of the Daylight Academic Forum is to provide an opportunity for PhD students to discuss their current research projects with a panel of other fellow PhD students – supported by a panel of independent researchers – to get critical feedback at an early stage of a research project.
The forums give time for the students to discuss research methodology and how you, as a PhD student, can arrive better results of your experiment than to find out, from blind review, when your paper is rejected for publication.
Here Professor Steve Fotios talks about the aims of the forums and why he was involved in setting them up.
A list of key publications can be found below. For a full list of recent publications please click here.
- Uttley J, Fotios S & Cheal C (2017) Effect of illuminance and spectrum on peripheral obstacle detection by pedestrians. Lighting Research & Technology, 49(2), 211-227. View this article in WRRO
- Fotios S, Uttley J & Fox S (2016) Exploring the nature of visual fixations on other pedestrians. Lighting Research and Technology. View this article in WRRO
- Fotios S & Uttley J (2016) Illuminance required to detect a pavement obstacle of critical size. Lighting Research and Technology. View this article in WRRO
- Fotios S (2016) A revised Kruithof graph based on empirical data. LEUKOS - Journal of Illuminating Engineering Society of North America, 13(1), 3-17. View this article in WRRO
- Yang B & Fotios S (2015) Lighting and recognition of emotion conveyed by facial expressions. Lighting Research and Technology, 47(8), 964-975. View this article in WRRO
- Fotios S, Yang B & Uttley J (2015) Observing other pedestrians: Investigating the typical distance and duration of fixation. Lighting Research and Technology, 47(5), 548-564. View this article in WRRO
- Fotios S, Atli D, Cheal C & Hara N (2015) Lamp spectrum and spatial brightness at photopic levels: Investigating prediction using S/P ratio and gamut area. Lighting Research and Technology, 47(5), 595-612. View this article in WRRO
- Fotios S, Unwin J & Farrall S (2015) Road lighting and pedestrian reassurance after dark: A review. Lighting Research and Technology, 47(4), 449-469. View this article in WRRO
- Fotios S, Yang B & Cheal C (2015) Effects of Outdoor Lighting on Judgements of Emotion and Gaze Direction. Lighting Research & Technology, 47(3), 301-315. View this article in WRRO
- Fotios S, Uttley J & Yang B (2015) Using eye-tracking to identify pedestrians’ critical visual tasks. Part 2. Fixation on pedestrians. Lighting Research & Technology, 47(2), 149-160. View this article in WRRO
- Fotios S, Uttley J, Cheal C & Hara N (2015) Using eye-tracking to identify pedestrians’ critical visual tasks, Part 1. Dual task approach. Lighting Research & Technology, 47(2), 133-148. View this article in WRRO
- Fotios S, Atli D, Cheal C, Houser K & Logadottir A (2015) Lamp spectrum and spatial brightness at photopic levels: A basis for developing a metric. Lighting Research and Technology, 47(1), 80-102. View this article in WRRO
- Fotios S & Cheal C (2013) Using obstacle detection to identify appropriate illuminances for lighting in residential roads. LIGHTING RESEARCH & TECHNOLOGY, 45(3), 362-376. View this article in WRRO
- Fotios S & Atli D (2012) Comparing judgments of visual clarity and spatial brightness through an analysis of studies using the category rating procedure. LEUKOS - Journal of Illuminating Engineering Society of North America, 8(4), 261-281.
- Fotios S, Qasem H, Cheal C & uttley J () A pilot study of road lighting, cycle lighting and obstacle detection. Lighting Research and Technology. View this article in WRRO
- Fotios S () Uncertainty in subjective evaluation of discomfort glare. Lighting Research & Technology, 47(3), 379-383. View this article in WRRO
- Logadóttir A, Christoffersen J, Fotios SA, Hansen SS, Corell DD & Dam-Hansen C () Investigating the use of an adjustment task to set preferred colour of ambient illumination. Color Research and Application.