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The Society of Light and Lighting VOLUME 15 ISSUE 1 JANUARY/FEBRUARY 2022 LIGHT LINES DRAMATIC HIGHLIGHTS Ready Steady Light returns STREET SMART Planning urban futures

Editorial January/February 2022 FROM THE EDITOR SECRETARY According to the European Commission, and and has environmental impact; it is a conduit for Brendan Keely FSLL they seem as a good a source for a definition as data, and not just about illumination status; its [email protected] anyone, 'A smart city is a place where traditional infrastructure can be used for other purposes networks and services are made more efficient such as surveillance or electric car charging. SLL COMMUNICATIONS with the use of digital solutions for the benefit of MANAGER its inhabitants and business'. The pros and cons of the smart city are too Juliet Rennie complex to delve into here but an encouraging Tel: 020 8772 3685 A smart city means better resource use aspect of a new document published by LUCI [email protected] and less emissions, it says: smarter transport (Smart thinking, p9) is also to ask cities to reflect networks, upgraded water supply and waste- on whether it is a good idea. 'While smart EDITOR disposal, more efficient lighting and heating in lighting is often the right choice for many cities, Jill Entwistle buildings, a more interactive, responsive city it might not be so for others today,' says Mark [email protected] administration and safer public spaces. Burton-Page, general director of LUCI. 'Every city is different.' At least a pause for thought. COMMUNICATIONS No mention of rainbows and unicorns but it's COMMITTEE: pretty clear that the EC, and just about everyone, JILL Eliot Horsman MSLL (chair) equates technology with urban utopias. There ENTWISTLE James Buck are questioning voices though. 'Why do smart Iain Carlile FSLL cities offer only improvement?' asks architect JILLENTWISTLE Jill Entwistle Rem Koolhaas. 'Where is the possibility of @YAHOO.COM Chris Fordham MSLL transgression?' Rebecca Hodge Stewart Langdown FSLL Lighting is an important element in the smart Luke Locke-Wheaton city for all sorts of reasons. It is an energy user Rory Marples MSLL Linda Salamoun MSLL CURRENT SLL LIGHTING GUIDES All contributions are the responsibility of SLL Lighting Guide 0: Introduction to Light and Lighting (2017) the author, and do not necessarily reflect SLL Lighting Guide 1: The Industrial Environment (2018) tahree pvieerwsosnoafl,thexecseopctiewtyh.eArell actotnrtibriubtuetdiotnosan SLL Lighting Guide 2: Lighting for Healthcare Premises (2019) organisation represented by the author. SLL Lighting Guide 4: Sports (2006) SLL Lighting Guide 5: Lighting for Education (2011) COPY DATE FOR LL2 2022 SLL Lighting Guide 6: The Exterior Environment (2016) IS 7 JANUARY SLL Lighting Guide 7: Office Lighting (2015) SLL Lighting Guide 8: Lighting for Museums and Galleries (2021) PUBLISHED BY SLL Lighting Guide 9: Lighting for Communal Residential Buildings (2013) The Society of Light and Lighting SLL Lighting Guide 10: Daylighting – a guide for designers (2014) 222 Balham High Road SLL Lighting Guide 11: Surface Reflectance and Colour (2001) London SW12 9BS SLL Lighting Guide 12: Emergency Lighting Design Guide (2015) www.sll.org.uk SLL Lighting Guide 13: Places of Worship (2018) ISSN 2632-2838 SLL Lighting Guide 14: Control of Electric Lighting (2016) SLL Lighting Guide 15: Transport Buildings (2017) © 2022 THE SOCIETY OF LIGHT SLL Lighting Guide 16: Lighting for Stairs (2017) AND LIGHTING SLL Lighting Guide 17: Lighting for Retail Premises (2018) SLL Lighting Guide 18: Lighting for Licensed Premises (2018) The Society of Light and Lighting is part of SLL Lighting Guide 19: Lighting for Extreme Conditions (2019) the Chartered Institution of Building Services SLL Lighting Guide 20: Lighting and Facilities Management (2020) Engineers, 222 Balham High Road, London SLL Lighting Guide 21: Protecting the Night-time Environment (2021) SW12 9BS. Charity registration no 278104 Guide to Limiting Obtrusive Light (2012) Code for Lighting (2012) Printed in UK Unit C, Northfield Point, Commissioning Code L (2018) Cunliffe Drive, Kettering, SLL Lighting Handbook (2018) Northants NN16 9QJ CIBSE TM66: Creating a Circular Economy in the Lighting Industry (2021) Tel: 01536 527297 E: [email protected] sll.org.uk 2

January/February 2022 Secretary’s column/Contents FROM THE SECRETARY Contents We welcome you back after the Christmas and • For previously recorded CPD 2 EDITORIAL @Schlenkercreatives New Year break and hope you had an enjoyable webinars (including regional 3 SECRETARY'S COLUMN and restful time. The society picks up where it webinars), go to: 4 NEWS left off in December and intends to bring you www.cibse.org/society-of- 5 CLASS ACT more high-quality, educational and informative light-and-lighting-sll/sll- webinars over the next 12 months. As a benefit of events/pastpresentations SLL's Ready Steady Light makes a membership there will be many SLL online events long-awaited comeback that you will not have to pay to attend. • For details of all upcoming webinars, go to: 9 SMART THINKING Over the course of 2021, the society offered www.cibse.org/society-oflight- more than 30 webinars with over 6000 people and-lighting-sll/sll-events/ Mark Burton-Page, general director registering from around the world and over 3200 upcoming-webinars-and- of LUCI, outlines a white paper live attendees. Included in this varied programme online-content designed to help cities form their of CPD events was an online panel discussion with vision on smart lighting members of the second International Workshop • To download SLL Lighting on Circadian and Neurophysical Photometry. They Guides: 12 QUALIFIED SUCCESS provided an update on practical recommendations www.cibse.org/society-of- for melanopic lighting design, a topic which clearly light-and-lighting-sll/sll- Sacha Abizadeh, UK head of attracte d a lot of interest as the webinar was publications-and-guidance creative lighting at WSP, on why he extremely well attended. Additionally, the society’s opted to gain CEng status through webinar on managing daylight and sunlight in hope to launch the new Code for Lighting, as well the alternative CIBSE route buildings had more than 500 registrants. as LG9: Lighting for Communal Residential Buildings and LG12: Emergency Lighting. We also plan to bring 13 ILLUMINATING INSIGHTS CPD webinars enabled the society to you webinars from the authors of the publications, continue to share knowledge and education in who are truly authoritative on their subjects having John O’Hagan, chair of CIE-UK, light and lighting to a worldwide audience, with dedicated a huge amount of time to the research reports on CIE's latest activities topics including the circular economy, lighting for and preparation of the individual guides. and publications healthcare environments, lighting controls, BIM for lighting, and lighting and the WELL Building We trust you have enjoyed the new SLL In 15 SENSE OF RHYTHM Standard. Recordings of all the webinars are Conversation series which began in October with available to view via the website (see box). SLL president Dr Ruth Kelly Waskett, FSLL, senior Iain Carlile looks at two of associate at Hoare Lea, and Florence Lam, FSLL, the latest LR&T papers, both We all really enjoyed being face-to-face with global lighting design director for Arup, discussing investigating circadian effects in the teams at Ready Steady Light at Rose Bruford light, health and human-centric lighting. real world situations College (see p5). Thanks to everyone who took part and a special thanks to the judges. We also The aim of this series, produced in association 16 EVENTS felt the change of timing was a successful move, with Signify, is to engage the lighting community and hosting the event in the autumn rather than at the beyond in discussion about the work and challenges COVER: The Peer Prize-winning scheme beginning of the year, and we plan to repeat that, that face the industry. We want to showcase some by MS Lighting Design at Ready Steady holding the 2022 event in October before the of the excellent people, initiatives, research and Light last October clocks go back. innovative approaches which are informing the direction of change, in the face of political, economic, 3 On membership matters, we would like to and environmental uncertainty. The series continues thank all those who have already renewed their this year, and all existing and future events can be membership for 2022. If anyone wishes to contact found on the website. me to discuss any membership issues I am available. Finally, as we went to press, we heard the sad We are aiming to see you face-to-face at news of the death of past president and member of regional events this year. We will be out and the LR&T editorial board Dr Robert Bean. We will about supporting the brilliant SLL regional lighting be publishing a tribute in the next issue. representatives at their events, and will be available to discuss your membership and answer any of BRENDAN your questions in person. KEELY We hope you are making use of the several BKEELY guides that have been produced in the past few @CIBSE.ORG months, including LG8: Museums and Art Galleries, LG21: Protecting the Night-time Environment, and CIBSE TM66: Creating a Circular Economy in the Lighting Industry. This year we have more publications lined up and Twitter: @sll100

News January/February 2022 LRC CREATES 3D PRINTED WALL THE LATEST NEWS AND STORIES DAYLIGHT SPECTRUM LEDS HELP LEARNING, SAY RESEARCHERS The 3D printing for lighting research programme at A US research team has found that exposure to short-wavelength enriched light with Rensselaer’s Lighting Research Center daylight-like spectrum improves key components of learning such as working memory, (LRC) in New York has created a cognitive processing speed and testing accuracy. prototype of a 3D-printed interior The clinical trial at the Division of Sleep and Circadian Disorders at Brigham and Women’s wall with integral luminaire for building Hospital, Boston, a teaching affiliate of Harvard Medical School, was headed by Dr Shadab construction. Rahman and began in 2019. The LEDs involved were SunLike by Seoul Semiconductor, which The wall was printed at the LRC reproduce the natural sunlight spectrum curve, in other words the intensity of light for each laboratory with functional and decorative wavelength of red, orange, yellow, green, blue and purple. features, including the mechanisms 'Even if the colour temperature and brightness are the same, light with different spectra may required for lighting. The aim is to affect non-visual responses to light exposure, including those of circadian rhythms and cognition, create a cohesive, whole-system interior differently,' said Dr Rahman. 'In this experiment, we found improvement in working memory, architecture that integrates electrical, cognitive processing speed, procedural learning, and testing accuracy with young adults under mechanical and thermal components. daylight-like light spectrum lighting compared to conventional-LED spectrum lighting.' Using 3D-printed walls allows custom • Prof Christian Cajochen and his team at the University of Basel in Switzerland used the same lighting to be incorporated from the start LEDs in their sleep study. Their paper, Effect of Daylight LED on Visual Comfort, Melatonin, rather than added-on at the end, said Mood, Waking Performance, and Sleep, was published in Lighting Research and Technology in LRC director of research Dr Nadarajah March 2019. Narendran. Because 3D-printed products are created through CAD models, wall CIE CONFERENCE AND ASSEMBLY designs can be easily modified to meet different codes, standards and aesthetic Light for Life: Living with Light was the theme of the CIE (Commission Internationale de requirements. l´Éclairage) 2021 virtual mid-term meeting and conference, organised by CIE Malaysia and In 2019 the LRC established the Assist held at the end of September. The national committees of the CIE also came together as 3D Printing for Lighting Consortium, an the General Assembly. CIE-UK was represented by Prof Steve Fotios of Sheffield University, alliance of lighting and 3D printer and supported by Stuart Mucklejohn, project manager at Ceravision. material manufacturers. Collaboration Among other business, Dr Jennifer Veitch (Canada), currently CIE vice-president technical, was key to gaining broad adoption was appointed president-elect, taking up the role of president at the end of the quadrennial of 3D-printed lighting and interiors, session in Slovenia in September 2023. said Dr Narendran. However, 'more work is needed to advance 3D printing Light vehicles, but not as we know them. technologies to meet lighting industry requirements,' he added. Researchers from Chalmers University www.lrc.rpi.edu/programs/ of Technology, Sweden, have created solidstate/3DPrinting.asp microscopic vehicles (10 micrometres wide sll.org.uk and 1 micrometre thick) that are mechanically propelled and guided using nothing but light. controlling them in a variety of complex and The vehicles are tiny particles coated with precise manoeuvres. They can even use them a metasurface, ultra-thin arrangements of to transport other objects, such as a dust or carefully designed and ordered nanoparticles, yeast particle. tailored to direct light in interesting and Eventually the technology may be used in unusual ways. applications such as moving micro-particles By adjusting the intensity and polarisation of through solutions inside of or adjacent to cells. a loosely focused laser light source (to direct a www.chalmers.se/en/departments/physics/ plane wave) they can move the 'metavehicles', news/Pages/Microscopic-metavehicles- placed in the bottom of a water dish, powered-by-nothing-but-light-.aspx 4

January/February 2022 Events Twitter: @sll100 CLASS ACT SLL's Ready Steady Light competition has staged a long-awaited return D espite the Covid-induced hiatus, enthusiasm for the SLL's Ready Steady Light was clearly as strong as ever with no less than 15 teams taking part when it returned last October. Three separate winners emerged: Michael Images courtesy of Schlenkercreatives except where individually credited Grubb Studio won the Technical Award, Franklite got the Artistic Award, while the Peer Prize went to MS Lighting Design. Arup, Foster + Partners, Hoare Lea and CBG Consulting were among the companies, design practices, manufacturers and educational institutions which fielded teams in the event, as usual co-organised and hosted by Rose Bruford College of Theatre and Performance in Sidcup, Kent. The traditional brief remained unchanged: given a random location in the college grounds, each team had just three hours to create an exterior lighting installation, using just six light fittings. This year's judges were Martin Lupton Eand Sharon Stammers of Light Collective, who were responsible for the Artistic 5

Events January/February 2022 EAward, and Mark Ayers, specification surprise at was that some of the same Teams manager (UK and EMEA) at LPA Lighting fittings were still being used. Arup Partners, and Ben Ratcliffe, lecturer at Rose CBG Consulting Bruford, who judged the Technical Award. 'Hopefully any manufacturers reading this Foster + Partners Artistic judges Sharon Stammers will step up to the plate and donate a few Franklite and Martin Lupton were well placed old samples,' said Lupton. 'It's great to see Hoare Lea to understand the challenges of the young designers surprised by metal halide iGuzzini competition. Lupton was one of the lamps that need to cool down before they Marlow Integrated Design founders, with Mark Ayers, and Stammers turn back on but manufacturers are missing a Michael Grubb Studio was an early competitor some 20 years real opportunity to get their latest products MS Lighting Design ago. One thing that they both expressed into the hands of designers from Foster + Rose Bruford College Partners, Arup, Marcus Steffan and so on.' UCL A UCL B UCL C Women in Lighting WSP Award Winners Technical Award (SLL): Michael Grubb Studio (team members: Isabelle Lane, Giulia Brighi, Chloe SalviAnna Freiesleben and Daniela Rendon) Artistic Award (IALD): Franklite (team members: Paul Robinson, Ian Cathcart, Julian Craven and Michael Eccles) Peer Prize: MS Lighting Design (team members: Marcus Steffan, Vanessa Macedo, Tiziana Regalado) Judges: Martin Lupton and Sharon Stammers, Light Collective Mark Ayers, specification manager (UK and EMEA), LPA Lighting Partners Ben Ratcliffe, lecturer, Rose Bruford Juliet Rennie Sponsors and supporters: IALD Competitors have just three hours and six fittings to create an exterior scheme Lee Filters Light Collective 6 Signify Whitecroft Lighting White Light sll.org.uk

January/February 2022 Events Technical Award Winner: Michael Grubb Studio Juliet Rennie Juliet Rennie E Artistic Award Winner: Franklite Peer Prize Winner: MS Lighting Design Twitter: @sll100 7

Events January/February 2022 'The standard of E It didn't appear to inhibit the creativity the installations of the teams, however. 'The standard of was very the installations was very impressive and I impressive. I was amazed by the teams' ability to use old was amazed by technology in such a creative way and also the narrative by the narrative and storytelling techniques and storytelling that they applied to each location,' techniques the commented Stammers. teams applied to Lupton agreed. 'One thing that came each location' across really strongly was the narratives. We talk a lot about narrative-based design and the fact that all of the teams were able to deliver a clear narrative, supported by the visual effects they had created with a limited palette of light in a short space of time, was really impressive.' The perennially high standards had as usual made choosing the winner hard, they said. 'It was very difficult to judge,' added Lupton. 'There were several contenders and I think the fact that we, as judges of the artistic prize, independently picked someone different to the technical prize and also the peer prize shows just how close it was.' 8 sll.org.uk

January/February 2022 Smart cities Marina Bay, Singapore, which launched its Smart Nation how can cities build their own vision of initiative in 2014, tops a number of lists of the smart lighting? How can they find future- world's smart cities proof solutions? Most importantly, how can they make the right decisions that are best Courtesy of Larry Teo on Unsplash for their city and citizens in the long-term? SMART Of course, it is impossible to have all THINKING the answers. But by encouraging cities to start with the right questions, we hope to Mark Burton-Page, general director of LUCI, outlines be able to guide them as they determine a white paper produced by the association to help cities their vision and path towards smart formulate their vision on smart lighting and support lighting. That is why LUCI has produced actions that will make it a reality the Cities’ Guide to Smart Lighting, to help cities – big and small, no matter what their T he advent of smart lighting has public lighting to cities’ and people’s needs, means or ambitions – form their vision on brought with it many questions connecting other city functions with public smart lighting and support possible actions for cities, as we have seen and lighting, creating new dynamic ambiences in towards realisation. heard in several international conferences urban spaces, and perhaps eventually even and discussions within the LUCI (Lighting rethinking the role of urban lighting itself. A DOCUMENT FROM CITIES, Urban Community International) network FOR CITIES and the wider urban lighting community But how can we ensure that these smart We have long believed in our association over the past few years. lighting developments benefit the city, its that cities are the best equipped to Smart lighting has, of course, brought citizens and the common good? In fact, respond to each other’s questions, and many new possibilities: better adapting these developments have also brought to face together the challenges of building quite a few questions for cities as well: better urban environments. That is why the document takes the form of a white paper, from cities, for cities. Initiated by LUCI within the framework of the Interreg North West Europe-funded project Smart- Space, this white paper is the result of a one-year collective process gathering cities and experts in Europe and beyond. A process involving in-depth interviews with international experts in the domain, co- creation sessions with city working groups, and a wide-ranging consultation with the members of the LUCI network. COMBINING TWO FRAMEWORKS: THE SOCIAL/ SOCIETAL AND THE TECHNICAL/ TECHNOLOGICAL Discussions around smart lighting are often reduced to solely technological aspects. But smart lighting is more than just technology. It is, in fact, 'politics in technological form', to quote one of the experts involved in the process. So it was very important for us that the guide bring together two different frameworks for smart lighting that often tend to be treated separately: in other words, a technical/operational framework, aiming essentially for efficient operation and energy savings, and a social/societal framework considering, for example, light Efor wellbeing, the social implications of lighting and citizen rights. By approaching Twitter: @sll100 9

Smart cities January/February 2022 Esmart lighting from both these perspectives, we hope to guide cities to apprehend the full scope of their role and responsibilities in the domain. WHY (OR WHY NOT) SMART © City of Tartu, A Haas LIGHTING? We find that, at the deepest level, smart LUCI AGM Tartu, Estonia, where cities and lighting professionals were given a preview of the guide lighting should contribute to realising the values of a city: it should help achieve the blueprint for building such a case, The Smart-Space project goals a city strives for, for itself, its citizens since each city has its own priorities Funded by Interreg NorthWest and society. and resources to consider, the guide Europe, the Smart-Space highlights some of the core elements project (2018-2021) aims The reasons why a city instigates a – ranging from payback period, to to facilitate the uptake of 'smart lighting'1 strategy are key to social sustainability, to infrastructural smart lighting in small/mid- ultimately directing its future paths and potential – that are essential to building size municipalities to enhance decisions. The document outlines the many a strong case for smart lighting and energy efficiency and reduce reasons why it should be considered and facilitating the municipal decision- CO2 emissions. The project how it can contribute to a broad range of making process. brings together end-users city priorities: environmental sustainability, (cities/citizens) and social sustainability, citizen value, the city’s 2 INTEROPERABILITY IS KEY innovation stakeholders internal organisation and more. A very important point in the (research institutes, LUCI, smart lighting domain: cities worry SMEs, enterprises) from But while smart lighting is often the right about vendor lock-ins and the the Netherlands, Belgium, choice for many cities, it might not be so (future) availability of components France and Ireland. for others today. Every city is different: in that can function with their terms of lighting infrastructure, applicable existing infrastructure. That is why quality lighting, is essential. Involving legislation, local needs and cultural values interoperability – in a nutshell, citizens in designing, assessing and and so on. Since smart lighting should never the ability of different devices to adjusting smart lighting systems can be seen as an end in itself, technology work fluently together – is a key help avoid problems and missed for technology’s sake, we also thought it issue. The guide describes possible opportunities. That is why the guide important to address some of the reasons ways to understand and deal with also dedicates a section to including why some cities might not want to venture interoperability. We also talk about techniques and approaches to engage into this area. tendering for interoperability, local stakeholders – from residents, to addressing how cities could jointly shopkeepers – in city lighting initiatives. TIPS AND STEPS FOR ACTION make a difference in the market for It was important for us at LUCI that this interoperable products and systems. document become not just another piece of paper extolling the virtues of smart lighting, 3 INVOLVING CITIZENS 4 ORGANISING EXPERTISE: but a useful and concise guide providing The ultimate goal of every city and CREATING A SMART cities with concrete advice and tips for municipal authority is to serve its LIGHTING ECO-SYSTEM action. The guide is therefore primarily citizens. Ensuring that the urban We all know that smart lighting composed of insights, experiences, advice space is tailored to their needs, with brings with it the need for new and approaches from city experts in order to support cities in decision-making and taking possible steps in the realm of smart lighting. Below are some of the smart steps that are discussed: 1 FACILITATING MUNICIPAL DECISION-MAKING: BUILDING A STRONG CASE One of the first things that a city has to do before it gets started is to build the case for smart lighting – allowing potential gains and opportunities to be weighed against potential costs and threats. While there is no fixed 10 sll.org.uk

January/February 2022 Smart cities LUCI © Sibelga LUCI (Lighting Urban Brussels: the Belgian capital's public lighting operator, Sibelga, has been implementing a step-by- Community International) is step deployment of intelligent street lights across the city the international network of cities on urban lighting. Created A Cities’ in 2002 at the initiative of the Guide to City of Lyons, today LUCI is a Smart non-profit organisation bringing Lighting together more than 70 member towns and cities worldwide that use light as a tool for social, cultural and economic development. It also includes over 50 associated members from the lighting industry, design agencies and research institutes. Through the organisation of international events and conferences, and by piloting lighting projects and research initiatives, LUCI helps cities harness the potential of light to create sustainable and people- focused urban spaces. www.luciassociation.org expertise and knowledge, not only in CO-AUTHORED BY DR. IR. PHILIP ROSS Reference municipal lighting departments, but AND LUCI 1 In the Cities’ Guide to in the city structure as a whole. The guide provides some suggestions and A white paper from cities for cities Smart Lighting, we use recommendations on how cities can — about the why and how behind the following minimum best go about organising the necessary Smart Lighting technical criteria for a expertise, and building the eco-system lighting system to be required to ensure long-term success. is often citizen data, and we should called Smart Lighting: see it as a public asset and use it solely the system includes 5 MAKING THE MOST in the public interest. That is why a elements generating OF PILOTS data management strategy should be data (for example, lights, Pilot projects are essential first steps included in any smart lighting initiative. sensors, controllers), for cities embarking on smart lighting. elements responding to How can cities best leverage such These are just some of the highlights data (for example, controls, pilot initiatives to take the next steps of the recommendations in LUCI’s white lights) and one or multiple towards broader deployment and paper on smart urban lighting. I truly elements making control scale-ups? Gathering insights from believe that its contents will not only help decisions (for example, pilots worldwide, the guide provides city decision-makers take their own steps a lighting management some ingredients for to help in setting towards smart lighting, but also engender system), all of which are up future-proof pilots. further collective conversation among united in a communication cities and their partners worldwide. In the infrastructure. 6 DATA IS A PUBLIC ASSET end, when it comes to smart lighting and AND SHOULD BE MANAGED its rapidly changing environment, working 11 AS SUCH together and learning from other cities Gathering and combining data from before moving forward on projects is the smart lighting infrastructure of course smartest step any city can take. brings with it several ethical, privacy and data management issues. This data www.luciassociation.org/cities-guide- to-smart-lighting/ Twitter: @sll100

Professional development January/February 2022 The introduction of the CIBSE technical report route means that an engineering degree is no longer necessary to achieve chartered engineer status QUALIFIED What is professional SUCCESS registration? Sacha Abizadeh, UK head of creative lighting at WSP, is Professional registration the latest lighting design professional to gain CEng status is recognition through through the alternative CIBSE route. He explains why he membership of a relevant did it, what the process was and why it will benefit his career professional engineering institution that an individual’s competence and commitment has been assessed, and that they have attained the standard required for admission to the national register at the appropriate level (for example, chartered engineer). W hen I was at a junior level, I available at the time. My fine art bachelor’s consultancy and among colleagues with always wanted to achieve a degree and lighting diplomas didn’t meet engineering degrees. The environment I was chartered engineer status. the criteria. However, this didn’t stop me involved in helped motivate me as almost all from continuing to push myself, and to gain consulting companies encourage engineers Back then it was slightly frustrating as it the experience and skills that would meet to attain a chartered status. chartered engineer criteria. required an engineering degree as part I also wanted to gain recognition in wider I was working in a building engineering industries, building further trust with my of the application process and the CIBSE technical report route (TRR) was not 12 sll.org.uk

January/February 2022 Professional development peers and clients. I wanted to be viewed report route. This included developing an Alternative route to MCIBSE as someone who can develop solutions approved synopsis paper, delivering the full CEng: the process to engineering problems using new or paper and subsequently being interviewed existing technologies, through innovation about it. The information published by This route requires candidates to and creativity, and to have technical CIBSE on its website helped me to plan my demonstrate their competence accountability for complex systems with final report and submission. through the submission of an significant levels of risk. engineering practice report It took me under a year to complete this (as well as supplementary The process involved me becoming a process. The preparation of the report and documentation), followed by an full member of CIBSE, which required materials were pretty much undertaken interview assessment. an interview and a competency practice during most of my weekends. The synopsis report aligned with chartered application. was submitted in December 2020 and two There are two UK application months later I was notified that I could closing dates a year: February Once my MCIBSE was proceed with the paper. I submitted it and August. Applications will be achieved I could follow in August 2021 with the interview then accepted throughout the year, the institution's following in October. but interviews will only be held technical during two designated interview It is clearly helpful when doing this to periods each year: April/May and 'I would strongly work with a supportive employer. WSP October/November. recommend getting fully encourages people to gain professional the chartership qualifications and registrations. It has a • If you do not hold any status if you work mentor programme to support colleagues qualifications or you do in the building in this respect, together with a bonus award not meet the academic industry and I scheme not just for those who gain further standards you can still believe it would qualifications but also for the mentors obtain CEng once your benefit all lighting involved in helping them. MCIBSE application has designers' been approved Obviously, companies also benefit from the capabilities of their staff, and • Application + engineering the engineering chartership provides practice report competency assurance for our clients as well as greater professional authority • Competence review for an employee. interview I would strongly recommend getting • Assessment + approval by the chartership status if you work in CIBSE members panel the building industry and I believe it would benefit all lighting designers. CEng • MCIBSE status is seen by many clients as a mark • Further learning to master of competency and recognition of an individual's skills and abilities. level OR technical report route application • Professional review interview OR technical report + professional review interview • Assessment + approval by CIBSE registration panel • CEng For membership grade: www.cibse.org/membership/ find-your-grade/member-grade Details of Technical Report Route: www.cibse.org/trr Additional resources for those applying for CEng from a lighting specific background: www.cibse.org/society-of-light- and-lighting-sll/membership/ resources-for-lighting- professionals-applying-for Twitter: @sll100 13

CIE report January/February 2022 ILLUMINATING measuring devices (ILMDs), plus their calibration INSIGHTS and some guidelines for their use. John O’Hagan, chair of CIE-UK, reports on its latest Using ILMDs, the projection of the activities and publications luminance distribution of a scene can be recorded for further evaluation. In addition to a simple documentation of measurements, the geometrical assignment of the image points into the object coordinate system often allows more complex calculations by combining luminance, directional and, if necessary, solid angle information (for example, for glare evaluation). In addition to the flexible evaluation option, it is possible to acquire a large number of measured values quickly and, if necessary, synchronously. Shutterstock CIE 245:2021 Optical Safety of Infrared Eye Trackers Applied for Extended Durations Measurement of obtrusive light and sky glow is the subject of one of the latest technical reports Infrared eye trackers are used to achieve communication through gaze interaction. T he CIE 2021 mid-term meeting comfort and wellbeing, as well as energy This is an important application of modern and conference, organised by efficiency, taking into consideration the light electro-optics and computer technology to CIE Malaysia, was held virtually, spectrum, and conventional design criteria benefit people with major motor impairments, from 27-29 September (see News, p4). There based around illuminance or luminance. as well as for general use as a human-to- were more than 200 participants from 37 Chair: Peng Xue (China) computer interaction device. By tracking eye countries (the UK had the second largest TC 3-60: Spectral daylight characteristics: movements of people with severe motor representation). The full conference papers to review geographical, seasonal and time- disabilities, the individuals can interact with will be available in the coming weeks from the of-day variations in the spectral power automated equipment through movements CIE Webshop, including open-access papers distribution of daylight, when represented of their gaze. In addition to purely passive available for free download as pdfs. by D (daylight) illuminants. To update the systems, which may only employ ambient The CIE has more than 70 technical CIE015:2018 reconstitution procedure to lighting, more typical eye trackers use active committees (TCs) working on new technical calculate D illuminants at a nominal correlated infrared eye-tracking techniques. reports and international standards. The following colour temperature. To provide spectral are those that have recently been approved: information for CIE standard general sky types. While several exposure guidelines exist, Chair: Martine Knoop (Germany) questions have arisen about the potential TC 2-95: Measurement of obtrusive light TC 8-18: Guidelines for definition and optical radiation hazards of using infrared and sky glow: to provide guidelines and evaluation of high dynamic range images trackers for durations of 10 to 12 hours each examples for metrics, measurement methods and and image sequences: to propose a definition day for a lifetime. Conventional trackers used corresponding instrument specifications for the of high dynamic range (HDR) images and image in a research setting would rarely be used for measurement of obtrusive light and sky glow. sequences, including luminance level, contrast more than an hour. Chair: Constantinos Bouroussis (Greece) and spatial/temporal distribution. To define TC 2-96: Revision of ISO/CIE 19476:2014 luminance levels, and recommend methods of This report explores the basis of the guidelines Characterisation of the performance of calculating key characteristics of HDR images. to determine their direct applicability. The most illuminance meters and luminance meters: Chair: Mekides Assefa Abebe (Norway) limiting criterion is the infrared exposure limit to to revise Standard ISO/CIE 19476:2014 and protect against delayed changes in the crystalline CIE S 023/E:2013 respectively. NEW PUBLICATIONS FROM THE CIE: lens of the eye. The technical committee also Chair: Armin Sperling (Germany) CIE 244:2021 Characterisation of Imaging examined some representative eye trackers and TC 3-59: The integration of daylight and Luminance Measurement Devices (ILMDs) found that day-long average exposure did not electric lighting: to define requirements for a This document describes the elements, function exceed that criterion. lighting design approach that considers human and characterisation of imaging luminance The SLL is a sponsoring organisation member of the CIE (Commission Internationale de l´Éclairage) and its UK members are entitled to 66.6 per cent discount on CIE publications For further information about CIE-UK, contact Allan Howard (executive secretary, CIE-UK): [email protected] 14 sll.org.uk

January/February 2022 LR&T essentials SENSE OF RHYTHM Iain Carlile looks at two of the latest Lighting Research and Technology papers, which both investigate circadian effects in real world situations S ahin and Figueiro present a field luminaires with 3500K fluorescent lamps. The required. The study was carried out using a study investigation into lighting for intervention employed a dynamic LED lighting previously developed simplified method of shift-working railway personnel. system comprising suspended direct/indirect estimating a biologically meaningful CS metric, The authors note that this group may suffer linear tunable white (4000K-6500K) luminaires, involving standard measuring equipment. It fatigue due to poor quality sleep, impairing combined with either a red or blue light was restricted to a single nursing home in the their ability to perform safety-critical tasks. (circadian-effective blue and 6500K white in Frankfurt Rhine-Main area in Germany. This can be exacerbated by disruption of the the morning, and circadian-ineffective red and 24-hour light-dark pattern occurring on the 4000K white in the afternoon and at night). Although the building itself met all of retinae, especially with respect to exposure to the current local design and construction light at night and circadian rhythm disruption. It was found that the lighting intervention standards, it was found that the existing The field study looked at lighting promoted significantly greater synchrony lighting installations were inadequate to interventions that could promote circadian between the light-dark exposures and rest- properly stimulate the residents’ circadian alignment, advance the timing of dim-light activity patterns of day shift participants, but system, with mostly moderate to low values melatonin onset, improve objective sleep did not significantly advance the timing of dim- of the biologically meaningful CS metric being quality, and reduce subjective sleepiness in an light melatonin onset. The intervention was recorded. The amount of circadian-effective operational context. also associated with reduced objective sleep light was therefore insufficient to provoke The study was undertaken in the Seyrantepe disturbances and improved subjective sleep proper circadian stimulation, possibly leading to Control Centre, which monitors the Istanbul quality, but only when the participants were off circadian disruption and adverse effects on the Metro’s track activities constantly, 24 hours a duty during the day shift. health and wellbeing of residents. day, seven days a week. Sixteen rail dispatchers (male, mean age 37.3, SD 6.4) took part in the The authors concluded that lighting The authors conclude that the insufficient baseline data collection phase, with 10 of them interventions can promote circadian alignment lighting situation in nursing homes is a serious (male, mean age 40.2, SD 6.2) taking part in and improve sleep quality among railway shift problem that needs urgent consideration. the intervention phase of the study. workers, and that the results may be possible The participants completed a Munich to apply to other industries that operate 24/7. Iain Carlile, FSLL, is a past president Chronotype Questionnaire for Shift Workers of the SLL and a senior associate at which suggested a late to extremely late Babilon et al also conducted a field study, dpa lighting consultants chronotype. During the study the participants examining circadian effectiveness in residents were exposed to two different lighting of nursing homes. The authors note that in Lighting Research and conditions: the pre-existing facility lighting many cases these residents have limited access Technology: OnlineFirst was used during the baseline phase (October to natural daylight, the main environmental In advance of being published 2015) and the experimental lighting during the cue of circadian entrainment. This has been in the print version of Lighting intervention phase (February 2019). exacerbated by restrictions due to the Research and Technology The study space was a windowless Covid-19 pandemic. (LR&T), all papers accepted for control room illuminated by a grid of troffer publishing are available online. In order to develop appropriate strategies SLL members can gain access for a more human-centred lighting approach, to these papers via the SLL reliable field measurements of the circadian website (www.sll.org.uk) stimulus (CS) in existing situations are A 24-hour lighting scheme to promote alertness and circadian entrainment in railroad dispatchers on rotating shifts: A field study L Sahin and MG Figueiro A field test of a simplified method of estimating circadian stimulus S Babilon, S Beck and TQ Khanh Different test rooms of a nursing home selected for performing field measurements of the circadian effectiveness of their lighting conditions including daylight entry (Babilon et al) Twitter: @sll100 15

Events 2022 For details of all upcoming webinars, go to: www.cibse.org/society-of- light-and-lighting-sll/sll-events/upcoming-webinars-and-online-content For previously recorded CPD webinars (including regional webinars), go to: www.cibse.org/society-of-light-and-lighting-sll/sll-events/past- presentations EVENT LIGHT + BUILDING 2022 Venue: Messe Frankfurt Date: 13-18 March 2022 www.light-building.com UPCOMING WEBINARS FINDING DARKNESS WITHIN THE LIGHT: THE ROLE OF RESPONSIBLE OUTDOOR LIGHTING DESIGN IN CONFRONTING THE GLOBAL LOSS OF THE NIGHT (SLL and CIBSE East Midlands Region) Speaker: Dr John Barentine, principal consultant, Dark Sky Consulting Date: 11 January Time: 6.30pm AVAILABLE WEBINARS INCLUDE LIGHTING LESSONS FROM EARTH AND BEYOND What can extreme conditions teach us about lighting from the Antarctic to off-planet projects? Speakers: Haniyeh Mirdamadi and Martin Valentine FSLL discuss extraordinary projects they have worked on BACK TO SCHOOL: ARE WE GETTING THE MOST FROM LIGHTING UPGRADES IN EXISTING SCHOOLS? Online panel discussion with the SLL and Age of Light Innovations examining the urgent need to address the environmental and human cost of poor-quality lighting in the education sector and asking key stakeholders with expertise and direct experience, what's working, what's not working and what could be done to improve how we buy lighting for existing schools INDOOR LIGHTING: CHANGE IS AFOOT (SLL and CIBSE Ireland) Looking at the newly revised BS EN 12464-1:2021 Light and Lighting of Work Places. Part 1. Indoor Workplaces, launched this autumn. Speaker: Sophie Parry, FSLL, technical applications consultant for ZG Group UK and Ireland, and chair of the SLL technical and publications committee 16