This presentation will describe the process and results of the IES Color Metric Task Group's work to develop a recommended color rendition metric. Group members will be present to discuss the novel features of the evaluation system, how it compares and relates to other ongoing efforts, best practices and remaining limitations, and the path forward as the lighting industry transitions from existing metrics to more complete and accurate measures. A tutorial will be provided so that various constituents are comfortable in calculating values and interpreting the results.
Shading design has been a frequently discussed topic in both practice and the academia. This presentation will demonstrate a user-friendly method for shading design which links daylight simulation based on Radiance and multi-objective genetic algorithms, thus far used primarily in the computer science field of artificial intelligence and computer-automated design. Multiple objectives such as daylight availability and glare control can be set based on lighting requirements of specific function of the space, to provide large range of shading application. The resulting data can be combined with shading design proposal that provides designers and building owners interested in installing a dynamic shading system with data regarding shading geometry, transmittance, and operation. The multiple objectives include annual Useful Daylight Illuminance (UDI) and annual Daylight Glare Probability (DGP). The optimized parameters of shading can be provided in the early stage of building design to achieve a better performance on indoor daylight environment as well as energy saving.
An estimated 1.6 billion or approximately 25% of the people in the world live without electricity. Additionally, 40% of the world's population lives on less than the equivalent of $2 US/day and cannot afford electricity or electric lighting. Instead, the sole source of light is either a kerosene lantern or wood fire. The poor light that results from the use of these sources seriously limits the education and economic activities of families using these sources, resulting in a continuing cycle of poverty. Recently, there have been a number of efforts to address this issue but none have really addressed the issue from a lighting point of view, but rather have focused on the source of power. This presentation addresses this issue in a more comprehensive fashion, reporting on student work in a course dedicated to this issue and in particular exploring the issue from social, cultural, economic, and global sustainability perspectives. The presenter will report on this work in the context of his personal experience in delivering solar-powered lighting systems to a remote village in Senegal, and the first-hand experience of the conditions there. In particular, the presenter will share the validation of much of what was discovered through the work of the students, and suggest how this work might be extended to reach a much larger portion of the world in need.
Historically, daylighting design has required time intensive analysis relegating it as a reactive validation reserved for projects with extended design schedules and larger budgets. However, environmental analysis is critical to meeting increasingly stringent energy codes and forward-thinking sustainability targets like the 2030 challenge. In order to effectively influence a project, this analysis must be provided early in the design process when architects are shaping massing, orientation, program, and facade development. Parametric computational tools enable meaningful daylighting analysis to move at the speed of design. The responsiveness and flexibility of new parametric visual scripting interfaces allow daylighting design to provide customized analysis; from a validation task focused on crunching numbers to a holistic design partnership directed at surgically improving the overall design quality. This presentation will examine the partnership between architect and lighting designer focusing on one case study as the speakers describe the tools and workflow utilized and how this process allows daylighting design to be feasible, accessible, and valuable to a broad range of project types.
This talk will demystify the lighting distribution channel. You will learn how your fixtures make it from your specifications into the field and the many things that can go right or wrong in between. You will gain a better understanding of how to budget your projects in design and protect your specifications during construction.
Vision experiments were conducted recently using NIST Spectrally Tunable Lighting Facility (STLF) to determine quantitatively the most preferred white points across the Planckian locus and the levels of object color saturation (vividness) in a typical interior room setting. Subjects evaluated color appearance of real fruits, vegetables, their skin tones, and the whole room under various light settings. The results showed that the chromaticity below Planckian locus (Duv≈ -0.015) much outside the range of ANSI C78.377 and lights enhancing chroma at a level of C*ab ≈ 5 (Ra≈ 85) on the average are most preferred. These results indicate that the current standards are unduly restricting color quality design, excluding possibilities of more preferred lighting products. The two-metric system in IES TM-30 tries to address this issue but will not be sufficient to meet the needs fully. A color preference metric and additional specifications for preferred white points will be needed to allow development of possible new products that may provide more comfortable or attractive lighting. Needs for such research and future standards work are also discussed in CIE.
We live in an amazing time. Science and design are colliding and expanding our knowledge of cause and effect. The physiology and neuroscience of lighting leave the designer with an ethical debate. What is our responsibility when designing? What is reasonable to account for? What is beyond our reach? This session grew out of a chance conversation that a lighting designer had with a bio-ethicist following Enlighten Americas 2014’s keynote address discussing the new neuroscience of architecture. The speakers will debate the true implications of lighting design questions such as circadian rhythm and our influence through electric lighting, glare’s impact of human interaction, etc. This session will explore the questions any designer must ask about the ethics of their design.
This presentation will describe the process and results of the IES Color Metric Task Group's work to develop a recommended color rendition metric. Group members will be present to discuss the novel features of the evaluation system, how it compares and relates to other ongoing efforts, best practices and remaining limitations, and the path forward as the lighting industry transitions from existing metrics to more complete and accurate measures. A tutorial will be provided so that various constituents are comfortable in calculating values and interpreting the results.
This presentation seeks to anticipate what a V3.0 lighting environment will look like. How might lighting be made? What are the challenges faced in designing, making and profiting from this change? The speaker, Naomi Miller, FIALD, intends to explore these questions through developing a product and documenting the process, following development from conceptual images through 3D modelling to physical models. As 3D printing becomes more accessible, how does this affect the pricing strategy of Lighting 3.0? Can the design value of an object be separated from the cost of physically making it? Could there be a shift to an "App Store" style market place for digital lighting products? Naomi will explore these questions as she looks at the business models of Lighting 3.0.
