Led light booth study
Design & visual control of perceived quality under LED Illuminants:
discover COLOR THE LIFE’s subscription study to ensure design excellence and visual consistency in the LED era.
A new era in Perceived Quality
The Challenge
The transition from fluorescent to LED lighting has brought new challenges for industries relying on consistent visual standards.
– LED heterogeneity disrupts color and material perception.
– Current CIE standards need adaptation for LEDs.
– Metamerism, durability, and micro-defects become harder to assess under LED illuminants.
Our Solution
In partnership with the Laboratory of Sophie Jost at ENTPE and the Cluster Lumière, COLOR THE LIFE is conducting a multi-sector study to identify new standard LED illuminants and define appropriate visual assessment protocols.
Our aim is to create a universal reference for designers, engineers and technicians of Colour and Perceived Quality and we will publish a White Paper aligned with the CIE, which will provide guidelines and practical tools for the choice and use of LED light booths.
Phase 1: Spectroradiometric and photometric measurements of 10 light booths
Definition of the measurement protocol :
– Determination of the position and number of measurement points
– Spectral measurements using the SPECBOS 1211-UV spectroradiometer: determination of stabilisation time, verification of repeatability.
– Measurement of uniformity using a luxmeter on the horizontal surface or at a certain height depending on the size of the samples presented,
– Luminance mapping (with Photolux);
Measurement of 10 boxes, each with 4 lighting / D65 (with or without UV) and 2 shop lighting simulations: Calculation of colour rendering metrics, metamerism if necessary, evaluation of spectral difference.
Report writing: Measurement report, iso-luminance map, illuminance stabilisation curve, iso-luminance map.
Phase 2: Measurement of sample reflectances
Measurement of the spectral reflectance of the samples under diffuse conditions (45° to be as representative of the evaluation conditions):
– MacBeth chart and greyscale chart
– Two specific samples minimum per brand (to be provided in duplicate for visual assessment)
Phase 3: Visual assessment of the light booths
– Determination and implementation of the experimental protocol (pair, triad, ranking), randomisation, anonymisation, semantic analysis.
– Evaluation by the brands of the standard samples and their specific samples
– Analysis of results and correlation with measurements
Phase 4: Dissemination of results
– Drawing up specifications to define the most suitable standard illuminants for the samples tested (MacBeth Charter, Greyscale Charter and brand samples: plastic, paint, textile, etc.).
– Provision of the results of the study to the project stakeholders
– Writing a scientific article and presenting the results at a CIE conference
– Making available to the public the White Paper ‘Design & Visual Control of Perceived Quality under LED Illuminants’.
Benefits for Stakeholders
BRANDS & MANUFACTURERS
Ensure consistent perceived quality from design to retail thanks to new specifications for Daylight and Storelight illuminants.
LIGHT BOOTH MANUFACTURERS
Gain insights to adapt to new standards.
CUSTOMERS
Experience improved product quality under LED lighting conditions.
RESEARCHERS
Contribute to industry-leading studies on color perception and standards.
Key Facts at a Glance
SUBSCRIPTION STUDY
You can participate in the full study or purchase the white paper only.
WHITE PAPER CONTENT
– Standard illuminants that meet the needs of industry (design, development, production) : D65 with and without UV and store lighting (3000 > 5000 K)
– Clear guidelines and proven protocols for the choice of LED illuminants and related tools in various industrial contexts
TIMELINE
– Pre-study carried out in France in 2024,
– Validation of participants, sample & light booth scope to be evaluated in March 2025,
– Evaluation of samples under light boxes in May 2025 (Cluster Lumière, Lyon, France),
– Results presented to participants in summer 2025,
– Presentation to CIE and release of White Paper in autumn 2025.
PLAYERS
Coordinator: COLOR THE LIFE
Consultant Laboratory: LTDS – UMR CNRS 5513 – ENTPE
10 brands/manufacturers : Transport, Industrial design, Architecture and decoration, Fashion, Luxury, Sport, Cosmetics
Light booth manufacturers
Why participate in the full study?
– test the visual control of your brand’s colors, materials and finishes under the majority of Led light booths on the market,
– define the most appropriate daylight and store lighting standards: specifications to be used for the renewal of your light booth fleet and store lights,
– access to your own results, outputs and the White Paper,
– take part in an innovative, collaborative project that unites the industry around common challenges,
– share your team experience with experts in color and perceived quality in today’s industry.
Why purchase the White Paper?
So that you can apply the new daylight and store lighting standards and specifications resulting from the study to all your suppliers (light booths, color management solutions, lighting in your stores and products).