Workshops

WS1: PERSONAL COLOUR MANAGEMENT FOR DISPLAY DEVICES AND CONSUMER PRODUCTS

The way we perceive colours varies significantly from person to person due to individual differences in the spectral sensitivities of short-, middle-, and long-wavelength cone photoreceptors. These variations can result in noticeable colour mismatches, known as metamerism failures, when viewing displays or consumer products. Addressing these discrepancies offers clear advantages for industry. Some products can be designed to minimise colour mismatches across diverse observers, while others, such as personal displays, can be tailored to optimise colours for individual users. This workshop is relevant to CIE Divisions 2 and 8, the display industry.

WS2: TAILORING INDOOR LIGHTING REQUIREMENTS TO MEET USERS’ NEEDS

Effective indoor lighting design requires interdisciplinary knowledge that extends beyond technical expertise. Lighting ensures safe usability, supports performance, and enhances visual comfort and well-being. Beyond functionality, it shapes the appearance of spaces, highlights details, and guides interpretation and use. A holistic approach is essential, integrating space, function, users, technology, and materials. Defining lighting requirements is a crucial step, balancing various influencing factors. While guidelines and standards offer criteria based on typical conditions, actual lighting needs may vary due to task-specific, personal, or contextual factors. This workshop explores a new decision-making framework for determining indoor lighting requirements. It will discuss an approach that goes beyond activity type, incorporating key influencing variables such as visual task characteristics, individual differences, and environmental context.

PELLEGRINO, Anna

(Division 3 and Technical Committee 3-63 “Decision scheme to determine lighting requirements for indoor environments”)

WS3: ELECTRIC LIGHT EFFECT ON INSECTS AND WILDLIFE

Towards Sustainable Development Goals (SDGs), the effect of electric light on nocturnal ecosystems has attracted increasing concern, with the impact on insects being a prominent example. On the other hand, the action spectrum of electric light for insect trapping has been researched for many years. There are also some mature results and applications, which may be beneficial for the discussion on the ecosystem aspect. The workshop is scheduled to facilitate mutual information sharing from both sides towards practical conclusions.

The workshop will be of interest to researchers examining the effects of electric light on insects, whether from the perspective of insect trapping or the broader ecosystem impact.

SLINEY, David, USA Center for Health Promotion and Preventive Medicine

(Division 6)

WS4: HDR IMAGING FOR ASSESSMENT OF GLARE AND OF OBTRUSIVE LIGHT

High Dynamic Range (HDR) imaging for glare evaluation lacks standardization, while uncertainty statements are usually absent. Together, these issues make it nearly impossible to fully explore the potential and limits of these systems. This workshop will provide a brief overview of the latest advancements in HDR imaging for evaluating glare and assessing the environmental impact of obtrusive light. By exploring technical aspects and real-world applications, it will set the stage for an in-depth discussion. Participants will be encouraged to engage in an open exchange on the challenges faced, lessons learned, and key research needs, fostering a collaborative dialogue that drives future advancements in the field.

WS5: RAPID REVISION OF CIE 115 LIGHTING OF ROADS FOR MOTOR AND PEDESTRIAN TRAFFIC

The 2025 Division 4 workshop will focus on revision of CIE 115:2010 Lighting of Roads for Motor and Pedestrian Traffic. This revision is required because the data are incomplete, they are outdated, and because in most cases the basis of the recommendation is unknown. While it is acknowledged that this document is in need of revision, it has been delayed whilst we wait for further research. At the 2023 Division 4 meeting it was proposed that we first target a rapid revision, using data we already have: planning for this rapid revision will also recognise the ongoing or further research needed for a later, more substantial revision. This workshop will highlight the need for revision. It will focus on key topics where revision is needed, and it will encourage debate about how the revision is carried out.

FOTIOS, Steve, University of Sheffield

(Division 4)

WS6: ACADEMIC & PROFESSIONAL LIGHTING EDUCATION

This workshop aims to strengthen CIE’s role in advancing education and fostering collaboration between academia and industry through its platform. Featuring three experts from academia and industry, invited by the CIE Standing Panel on Education, the session will explore interdisciplinary approaches to lighting education and professional training. Designed for educators, researchers, and students, the workshop encourages active participation in CIE’s academic initiatives and professional training efforts. It seeks to bridge the gap between theoretical knowledge and practical application, promoting industry-academia partnerships. By facilitating dialogue and exchange, the workshop supports innovative educational strategies, best practices in teaching and training, and collaborative research. Participants will network with global experts, explore emerging trends, and help shape the future of lighting education and industry collaboration.

HAO, Luoxi, Tongji University

(CIE SP Education)