Simulations of non-image-forming effects of light in building design: A literature review

Gkaintatzi-Masouti, Myrta; Duijnhoven, J. van; Aarts, Mpj Mariëlle

doi:10.1177/14771535221142812

Cited by 7 publications

(5 citation statements)

References 97 publications

(190 reference statements)

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“…Within each space, average illuminance values could also vary depending on view directions and the position of occupants (seating or standing), for instance. As suggested in recent research, 74,75 a broader interpretation of daily activities, as a temporal sequence of events, and daylight perception, [76][77][78] should therefore be considered when assessing daylight quality in various spaces. Yet, the novel modes of representation that spatialize melanopic light in relation to architecture, as polar coordinate diagrams and graphical displays of lighting pattern properties, inform designers on the incidence of architectural form and aperture typology on resulting light types, so as to guide future architectural design initiatives.…”

Section: Discussionmentioning

confidence: 99%

Representing the photobiological dimension of light in northern architecture

Lalande

Hébert

Potvin

et al. 2023

Indoor and Built Environment

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Daylight can enhance the quality and inhabitability of architecture through a better relationship with the exterior environment, especially by its intensity, chromaticity and ability to synchronize the human circadian clock. Daylight integration in architecture remains a challenge in Nunavik (Quebec, Canada) due to its subarctic climate, photoperiod and solar geometry. The objective of this research is to implement photobiological metrics of light in architectural representations by isolating the photopic (daytime vision) and melanopic (circadian clock) portions of the electromagnetic spectrum, and to spatialize daylight and artificial light in relation to landscapes and indoor architectural spaces. An automated and low-cost capture tool based on Raspberry Pi microcomputers and Camera Modules (RPiCM) captures high dynamic range images, which accurately measure luminance to render human perception. Absolute photopic luminance maps (cd/m2) are supplemented with false colour displays of photopic/melanopic contents of light regarding building surface materials. The research develops photometric captures of absolute photopic and melanopic illuminance (lux, EML). Photobiological metrics of light are integrated into a set of physical properties of lighting patterns to perform light assessments and are ultimately represented as a graphical display to help designers and researchers to evaluate architectural interior–exterior relationships through daylight qualities.

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Section: Discussionmentioning

confidence: 99%

Representing the photobiological dimension of light in northern architecture

Lalande

Hébert

Potvin

et al. 2023

Indoor and Built Environment

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“…To create a sustainable, good-performing lighting environment, a broad spectrum of design variables must be considered, i.e., building envelope properties, building services' systems, occupants' dynamic behaviour, and life-cycle costs. Lighting is one of these variables and must be balanced with many other, sometimes conflicting, performance objectives [1,2]. Earlier analysis and building performance simulations have shown that optimising building performance for energy and cost provides a great saving potential.…”

Section: Introductionmentioning

confidence: 99%

“…In light of the growing awareness of the profound impacts of beyond-vision effects on human health and well-being and according to the review done by Gkaintatzi-Masouti et al [1], new simulation workflows have been introduced to better predict and integrate these effects into the design and optimization of architectural environment by considering luminous and temporal factors of light, specifically light quantity, spectrum, directionality, timing, duration and previous light history [22]. These advanced simulation workflows provide practitioners and researchers with a detailed understanding of how lighting affects both the built environment and human occupants.…”

Section: Introductionmentioning

confidence: 99%

Exploring Simulation Workflows, Tools, and Metrics for Beyond-Vision Effects in Multi-Objective Optimization: A Scoping Review

Tabbah,

Aries,

Moscati

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Lighting in the built environment affects different aspects, ranging from building performance in terms of costs and energy consumption to human well-being in terms of thermal comfort, visual effects, and beyond-vision effects. Buildings optimised for specific performance metrics rarely consider different aspects simultaneously, leading to sub-optimised, unbalanced, or non-trade-off solutions. Therefore, multi-objective optimisation has commonly been used to overcome conflicting performance objectives. Recently, light effects beyond vision gained more interest in building design but it is unclear if and how they are integrated with other existing building performance metrics and simulation workflows. A scoping review investigated the state-of-art in multi-objective lighting design optimisation regarding building performance and human well-being focusing on performance metrics, simulation workflows, and the overall information flow. Results show that metrics for beyond-vision effects are not integrated with other human well-being and building performance metrics. The simulation workflows included multiple steps and computational tools in multi-objective optimisation. This process has limitations such as a long simulation time, no ubiquitous integrated tool, and a reduced information flow.

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“…As has been intended and described by other authors [11,20,21], providing a simple process for smart or integrative lighting design is important when the process is properly integrated into a traditional workflow. Its implementation requires lighting designers to understand the tedious terminology defined, evaluated and correlated, when possible, to elucidate strengths and limitations to progress in its knowledge.…”

Section: Introductionmentioning

confidence: 99%

Method to Calculate Melanopic Light Reaching the Retina Depending on the Optical Density of an Aging Crystalline Lens

et al. 2023

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Lighting studies that take into account the age of the inhabitants of an area and are related to circadian light are difficult to find. This study aims to simplify a method to approximately compute the circadian light reaching the retina based on photopic illuminance reaching the corneal plane and considering the optical density of an aging crystalline lens. As an example of this proposed method, calculations were performed with both the D65 and A standard illuminants, showing how the spectral power distribution is modified by the optical density of the crystalline lens, mainly at short wavelengths. Due to these selective wavelength absorptions of the aged lens, a significant variation in the level of daylight equivalent melanopic illuminance (EDI) is present in the retina. With levels of 200 lux at the corneal plane, these variations ranged from 204 EDI lux to 178 EDI lux for the D65 standard illuminant, and from 99 EDI lux to 101 EDI lux for the A standard illuminant for observers aged 10 and 90, respectively. In this work, we aimed to simplify the greatest possible level of calculation of melanopic light, while describing simple protocols that are easy to translate into practice. Our results will allow researchers to carry out optimized lighting designs from both the photometric and circadian perspectives considering the optical density of an aging lens.

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Simulations of non-image-forming effects of light in building design: A literature review

Cited by 7 publications

References 97 publications

Representing the photobiological dimension of light in northern architecture

Representing the photobiological dimension of light in northern architecture

Exploring Simulation Workflows, Tools, and Metrics for Beyond-Vision Effects in Multi-Objective Optimization: A Scoping Review

Method to Calculate Melanopic Light Reaching the Retina Depending on the Optical Density of an Aging Crystalline Lens

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