Special Session: Panel on Light, Colour, and …

Panel Members & Topics


Light, Colour and the Importance of Modern Lighting Metrics 

Tony Esposito, Founder and Head Research Scientist of Lighting Research Solutions, Philadelphia, PA, USA

Abstract: Architectural lighting has many impacts on human visual and non-visual functioning. One important impact, driven by light’s intensity and spectrum, is the color rendering of objects. In this brief talk, I will attempt to convince you that good light source color rendition is critically important in the built environment. IES TM-30, a color rendering system from the Illuminating Engineering Society, will be briefly discussed.

Light, Colour and Health

Mariana G. Figueiro, Director of the Light and Health Research Center at Mount Sinai and Professor in the Department of Population Health Science and Policy at the Icahn School of Medicine, New York, NY, USA.

Abstract: In addition to its well-known visual effects, light can also elicit a direct (acute) and a phase shifting (alter the timing of the biological clock) effect on humans. These are typically referred to as the “non-visual effects of light”. This presentation will provide an overview of the impact of light color on the direct and phase shifting effects of light and demystify the notion that all we need is blue or “blue-enriched” lights to elicit these non-visual effects on humans.

Light, Colour and Design 

Deborah Gottesman, Principal, Gottesman Associates

Abstract: How do humans sense colour? Seeing colour accurately is intricately related to the light source. Deborah will discuss how humans perceive colour, introduce some colour metrics, and what is required to sense colour accurately. The discussion will be rounded out by showing how colour can be leveraged to advantage in design.

Light Colour and Health in Antarctica

Martin Valentine, Global Lighting Solutions Specialist, Kent, United Kingdom

Abstract:For those that ‘winter’ in Antarctica, psychosis, suicide, depression have been common issues, so too are the many records of circadian sleep disorders. This presentation shows the history and challenges of living in Antarctica, specifically at the British Halley Ice Shelf Research Station. The author designed the lighting for the new Halley VI Station and the whole design for this new base was informed by over 40-years of endocrinological medical data gathered from previous stations. Now, 7-years since the station became occupied, the story and solution for Halley VI has a resonance and offers some key insights to all those working in the field of human centric lighting.

Moderator: Tom Butters, Lighting Agora

Organizers: Tom Butters & Venkat Venkataramanan, Canadian National Committee of CIE.

Panel Member Bios

Tony Esposito, PhD, is the Founder and Head Research Scientist of Lighting Research Solutions, a lighting consultancy providing services in research, education, and development. Tony holds a doctorate in Architectural Engineering from Penn State University with a minor in statistics. His specialties include color science, color discrimination, IES TM-30, human factors research methods, circadian metrics, and spectral modeling and optimization. His primary research goal is to develop an accurate and intuitive color discrimination metric for applied lighting.He currently serves as the Co-Chair of the IES Color Committee and previously led the task group that developed IES TM-30 ANNEX E, a set of recommended specification criteria meant to ease the use of TM-30.

Mariana G. Figueiro, PhD, is the Director of the Light and Health Research Center at Mount Sinai and Professor in the Department of Population Health Science and Policy at the Icahn School of Medicine. She is well known for her research on the effects of light on human health, sustainability, circadian photobiology, and lighting for older adults. Dr. Figueiro is a Fellow of the Illuminating Engineering Society (FIES) and the author of more than 140 scientific articles in her field of research. She has brought attention to the significance of light and health as a topic of public interest through her TEDMED talk.

Deborah Gottesman, MBA, P.Eng., LC, IES, Assoc. IALD, CIE Principal Deborah has a unique contextual understanding of lighting from all perspectives; her career spans over 30 years in all facets of the lighting industry, including design, engineering, management, education, and manufacturing. Since establishing Gottesman Associates in 1999, Deborah’s creative, rigorous, passionate and client-driven approach have brought award-winning lighting designs to a wide range of satisfied and repeat clients. An electrical engineer with an MBA in Real Property, Deborah has successfully worked on projects in many sectors, and has taught lighting at all levels to a wide audience from students at colleges and universities to senior architects.Deborah currently sits on the International Technical Committee 3- 59: The Integration of Daylight and Electric Light of the Commission Internationale de L’Eclairage (CIE).

Martin Valentine FSLL MIES has worked in the field of specialist lighting design for over 30-years. A Masters graduate from the Bartlett School of Architecture he has worked within the client, independent design practice, multidisciplinary consultant roles and more recently working within the lighting manufacturing side with a wide focus across European, Asian, Australasian, Middle Eastern and North American markets as well as the UK.Over the last 5-years his work encompassed standards, light quality, technology, training and events, defining R&D for future interior and exterior lighting product ranges and interfacing with the international lighting design community and clients.

He now advises key clients all over the world, providing specialist lighting consultancy services for recent projects in Europe, Saudi Arabia, the UAE and the UK.

Tom Butters (Moderator), LC is the creative mind and developer behind some of the most well received educational tools and events of the global lighting industry. Since 1986, Tom has worked in or served the entire array of the lighting industry. He uses this diverse background and empathy to understand the needs of the individual or organization to deliver high quality lighting education to suit the precise needs of the user. Tom is a proud board member of the Nuckolls’ Fund for Lighting Education.Tom was the co-developer, of the globally successful free lighting app “IES Ready Reference”. He is the creator of “Light for Life – a Global Collaboration 2020” which involved 17 webinars from 15 lighting organizations from around the world during the COVID-19 pandemic. Tom was the director of the IES’ free 4-hour live webinar “Germicidal Disinfection in the Days of COVID-19” which had over 3600 live attendees from 56 countries and has been viewed by thousands more as a free offering on the IES website.