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Speakers PLDC 2013 – Archive

Festival of light – a means to an end


Johan Moritz

The paper will be given on Friday in the Professional Practice Issues track.

In a nutshell: The speaker is a qualified lighting designer employed by a local government in Sweden. He will first explain how he as a lighting professional came to work for a municipality and what the job entails, which is not designing all the lighting everywhere in the city! Projects he has managed/designed/coordinated with lighting designers will be shown.

One of the many projects he developed for the City of Malmö is the :by Light festival. Many cities around the world have light festivals on different scales. When Malmö decided to stage a light festival the speaker had a very clear goal and approach: to give visitors and professionals alike the chance to experience new ways of illuminating the urban environment. He will describe the project and the specific elements he wanted to include, draw comparisons with other lighting festivals, which are generally only for immediate and temporary effect, and sum up what has been learnt to date and what the consequences are. As a lighting designer working for the municipality, the speaker had the idea, the contacts and the scope to take Malmö’s lighting activities – and the festival – a step further, reaching out to collaborate with further towns and cities in the region.

The paper will conclude with some thoughts on how the presenter’s role could be replicated in other cities and what opportunities he sees for cities that are open to improving the lighting in their different districts, which is not related to festivals only.

About the speaker: Johan Moritz is a lighting designer with 25 years’ experience in entertainment lighting and lighting in the public realm. He has been employed full-time by the City of Malmö in the Streets and Parks Department since 2002. On a daily basis his work involves collaborating with architects, landscape architects and artists to develop safe and interesting public spaces and promote social sustainability. Johan also lectures at universities and events and teaches hands-on workshops.

“The valuation of interior daylight situations, relating two single value indicators”


Renate Hammer

The Paper will be presented on Saturday in the Lighting Application Research track.

In a nutshell: Commonly the quality of the daylight in an interior space is characterized by the daylight factor, which is defined as the ratio of the indoor illuminance Ep at point p to the outdoor horizontal illuminance, Eho outside, under an overcast CIE reference sky. Operating with this reference sky, different configurations of building envelope openings and spatial interior volumes can be assessed.
This method does not consider direct solar radiation, thus the orientation of the building and its location on the latitude has no impact on the daylight factor. For the inhabitant, the difference as to whether and how a room has access to direct sunlight is fundamental. Together with colleagues, the speaker has developed a new indicator: the light penetration factor – LPF. The LPF specifies the percentage of a room’s net volume which can feasibly be penetrated by direct sunlight over the course of one day. A CAD-supported computer tool, the LPFvisualizer, has been developed to allow designers to calculate light penetration during the early design stages. Furthermore, a study has been carried out to show the relation between the daylight factor and the light penetration factor, calculating the two indicators for different building samples, comparing locations at 40°, 50° and 60° latitude and in the cardinal directions in 30° steps. The study offers a data set characterizing the interior daylight situation just by linking two single value specifications.

About the presenter: Renate Hammer studied Philosophy and Architecture at the University of Vienna/A, Urban Engineering at the University of Tokyo/J and Solar Architecture at the Danube University Krems/A. Renate was employed at the Centre for Architecture, Construction and Environment at the Danube University in Krems before working as an independent architect from 1999 to 2009. In 2009, she completed her doctorate degree in Architecture at the Technical University in Vienna. Since 2011, she has been the Dean of the Faculty for Education, Arts and Architecture at the Danube University of Krems.

“Integrating non-visual optical radiation into lighting design”


Uthayan Thurairajah

The paper will be presented on Saturday in the Lighting Application Research track.

In a nutshell: The presentation concerns the interaction of people and light. This is a crossroad subject that requires the combination of knowledge from the field of physics, physiology, psychology, and ergonomics. In order to practise efficient lighting design, one needs to understand how lighting can be used to enhance productivity and safety as well as influence comfort, health, perception and behaviour.
Non-visual optical radiation affects human physiology and behaviour both directly and indirectly. The direct effect includes melatonin suppression, elevated cortisol production and increased core body temperature, whereby the indirect effect mainly concerns the resetting of the internal circadian clock. Optical radiation impacts visual, circadian, neuroendocrine and neurobehavioral responses.
The presentation will review the science of vision, visual and non-visual pathways, the existence of spectral opponency in the human circadian system, the latest research on visual and non-visual receptors and the effect they have on our body rhythms, health and behaviour. The presentation will also provide a comprehensive overview of the policies and practices of various authorities throughout the world regarding the issue of non-visual optical radiation, including scientific evidence and case studies.

About the presenter: Uthayan completed his Bachelor of Science in Electrical Engineering at the University of Windsor/CDN and his M.Sc. in Architectural Lighting Design at KTH in Stockholm/S.
Since 2006 he has been working for the MMM Group as Senior Project Engineer and Associate where he is responsible for acquiring and managing the preliminary and detailed design of highway and roadway illumination, architectural lighting and signalization projects.
He also teaches at Ryerson University.

“A people-centric approach to using light in working environments”


Mathew Cobham

The paper will be presented on Friday in the Lighting Application Research track.

In a nutshell: When it comes to how to apply findings on the effect of light on human wellbeing, thankfully the links between research and application are becoming stronger (although there is a long way to go).
The context for the paper is working environments including, offices, schools and hospitals. The research referred to centres around healthcare as these environments, from a research perspective, are tightly controlled, and then considers how this can be applied in other application contexts.
After briefly reviewing some of the latest research findings around spectrum, quantity of light and application the paper focuses on how this is being used in healing environments. The second part of the paper focuses on critical areas such as Uptake Rooms (used for cancer analysis) and shows how ongoing research is indicating that false positive results can be positively influenced by reducing anxiety in patients, and the role light plays in this.

About the presenter: Matthew studied in Huddersfield/UK and graduated with a BA Honours in Business and Marketing. He continued with a Master of Science in Light and Lighting in architecture. He worked for Ecophon, DPA Lighting, Concord Lighting and Groupe Sonepar in Lyon before he joined Philips in 2004. He was the team manager of Philips Professional Lighting South East Asia in Singapore and is currently working for Philips Professional Lighting Europe in Eindhoven/NL. As lighting application team manager, he and his team drive architectural lighting design, application education and innovative product development and research.
He has been a speaker at numerous conferences and schools such as Parsons the New School for Design in New York City/USA.

“Lighting Credentialing and Certification in North America”


James Benya

The paper will be presented in the Sustainable Lighting + Design track.

In a nutshell: In North America, the close relationship between the United States and Canada generally results in cooperation and formal standards and organizational structures, such as IESNA. Moreover, the similarity of business practices makes recognition of certifications and society memberships more-or-less interchangeable. But differences remain. This report is representative of the history, current status and prediction of future efforts in both countries.

About the prersenter: Jim Benya, FIESNA, FIALD is a lighting designer and educator. He has served on the Board of the IALD and NCQLP, where he also served on the Test Committee. He is on the Board of the International Dark Sky Association and part of the California Energy Commission Advanced Lighting Advisory Group. He has been an adjunct professor at key Universities in the USA, is the author of two books and writes for renowned journals.

“How the LED cowboys and tzars have complicated the profession of lighting design”


Martin Klaasen

The paper will be presented on Friday in the Sustainable Lighting & Design track.

In a nutshell: This paper promises to summarise everything you always wanted to know about the unscrupulous behaviour of LED sales people and the arrogance of high horse LED producers and how this has impacted the way we deliver our lighting design services. As we progress our profession of lighting designer to a more and more internationally accepted professional level we are faced with unexpected challenges from LED sales people (cowboys) and LED manufacturers (tzars). This paper will elaborate on the sometimes unprincipled behaviour of LED sales people and the flagrantly conceited attitude adopted by some LED companies and encourage lighting designers to think seriously about how to change this state of affairs to defend the integrity of their projects as well as their profession.

About the presenter: Martin Klaasen is an award-winning lighting designer, design consultant, lecturer and resource speaker with more than 30 years of experience in the lighting industry. Martin holds a Master’s degree in Industrial Design and started his career with Philips (in Holland and overseas). He founded his own lighting consultancy, Lumino Design International, in Singapore, and later Lighting Images in Australia, and is now the owner of Klaasen Lighting Design (KLD) with offices in Perth, Jakarta, Singapore, Shanghai and Dehli. Martin writes for different journals and for the last few years his daily “Light Talk” blog has been featured on the Professional Lighting Designers magazine’s website.

“Luxury brands: lighting designers and architects facing the challenges of towards sustainability”


Marinella Patetta

The Paper will be presented on Friday in the Sustainable Livghtiung and Design track.

In a nutshell: In the last few years, due to new technologies, to the economic crisis and to the attention to energy saving and sustainability, lighting design has changed radically. As a matter of fact, depending on the projects, the new aspects of lighting design can help to reach a better result, but this may be different in the case of luxury brands.

Brands such as Dior, Valentino, Zegna, Bulgari require increased attention during the lighting design process. In these cases, light is clearly used as a tool to underline and strongly promote brand, identity and image. Light needs to be evocative, distinct, unique. Light needs to play different roles – as poetry, to indicate added value, as a way of increasing sales. The two case studies to be presented are exemplary, and the audience will benefit from the experience the speaker has made using new technologies as well as how the relationship between the lighting designer and the architects has developed.

About the presenter: Marinella Patetta graduated in Architecture at the Politecnico di Milano in 1986, followed by a Master’s degree in Lighting Design. In 1989 she founded Metis Lighting S.r.l. together with Claudio Valènt, focussing on lighting design and the industrial design of lighting equipment, including custom luminaires. In the last few years, Marinella has been teaching and pursuing research activities in the Faculty of Industrial Design at the Politecnico di Milano.

“Is there a right white for gallery lighting?”


Malcom Innes

The Paper will be presented on Friday in the Lighting Application Research track.

In a nutshell: At PLDC 2011, the author reported on an experiment that quantified how there can be a significant mismatch between illuminance measurements and the perceived brightness of some exhibits in museum displays. This previous study explored evidence of the effect as seen in dimmable low-voltage tungsten halogen gallery lighting.

Given that the results of the tungsten halogen study suggested that even small increases in colour temperature of around 150 kelvin could significantly affect the perceived brightness of illumination, what is the implication for solid state lighting? With a general move towards completely LED lit museums and galleries, designers have to make a conscious choice of colour temperature. Can the choice of LED colour temperature affect the perception of brightness at conservation light levels? An informed choice about the visual effect of colour temperatures can allow lighting designers to maximise the perceived brightness of objects without increasing illuminance.

About the presenter: Malcolm Innes worked as a professional lighting designer for 18 years. He first worked with Kevan Shaw Lighting Design and then Speirs and Major Associates in Edinburgh, leaving Speirs and Major in 2004 to set up his own practice to pursue his interests in lighting for small-scale, intimate projects and especially to explore the artistic side of lighting. Malcolm was pro-active in establishing the new Masters programme in Creative Lighting Design at Edinburgh Napier University, and is now a full-time educator. He is currently collaborating with fellow educators to create an association for Lighting Design educators and researchers. Malcolm has a degree in Drawing and Painting from Edinburgh College of Art.

“The Berggruen Museum – exemplifying the seamless transition from halogen to LED illumination”


Raoul Hesse

The paper will be presented on Friday in the Lighting Application Case Studies track.

In a nutshell: The presentation will focus on the new lighting scheme for the extension to the Berggruen Museum in Berlin. The Berggruen Collection has been housed in the West Stüler Building located opposite Charlottenburg Palace in Berlin since 1996 and is part of the National Gallery of Berlin. This year (2013) the new extension was completed and with this relatively small project the National Gallery of Berlin decided to switch from low-voltage halogen lighting to an LED lighting scheme.

The goal was to design the lighting using SSL technology and achieve a visual quality of the same level as under halogen lighting while benefiting from the energy saving properties and other positive qualities of the LED source coupled with the DALI lighting control system.
The design team together with the client and the user undertook several comparisons of LED spotlights at a defined illuminance of 100 lux. The National Gallery of Berlin opted specifically for an LED solution, and a review of this project can serve as a guideline for other similar undertakings.

About hte presenter: Raoul Hesse is Founding Partner at Lichtvision Design & Engineering GmbH in Berlin/D and has been project manager on a number of key projects. His specialisation is artificial lighting design, lighting control systems, and media facades. Before working at Lichtvision, he was a Scientific Research Associate at the Institute for Electronics and Lighting Technology at the Technical University of Berlin. He holds a degree in Electrical Engineering from the Technical University of Berlin/D.

“Post occupancy: why and how to evaluate user experience”


Kevan Shaw

The paper will be presented on Friday in the Professional Practise Issues track.

In a nutshell: Lighting design is primarily about delivering quality lighting. While we have tools that can measure quantities of light this does not tell us how successful a design is at delivering the quality in a lighting scheme. It is unfortunately rare to get the opportunity to do a formal Post Occupancy Evaluation (POE) study of a project although with the very significant changes to lighting technology and resulting changes to the user experience it is probably even more important now that we do this.
This paper will look at a process that the speaker has developed and tested to undertake Post Occupancy Evaluations. The process is based on research methods that the speaker learned while studying Social Psychology at university and has completed a pilot study to test and refine the system.
This will provide an overview of the requirement for Post Occupancy Evaluation and a toolkit for developing effective Post Occupancy Evaluation studies to quantify the lighting quality of a design.

About the speaker: Kevan Shaw Kevan studied Economic and Technological History and Social Psychology at Loughborough University of Technology. His career in lighting began as a trainee building services engineer working on projects in the Middle East, after which he worked as a lighting designer for rock bands including Jethro Tull, Ultravox, XTC and Steve Hackett. In 1985 he joined D.H.A. Lighting in London to develop lighting effects equipment and design lighting for television and video as well as a number of architectural and exhibition lighting schemes. Kevan established Kevan Shaw Lighting Design in Edinburgh in 1989 and has led his design team on numerous award-winning projects. Kevan is a part-time lecturer for the MSc