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Science Track [clear filter]
Friday, October 9

10:30am EDT

SCIENCE : Shading Optimization Based on Multi-Objective Genetic Algorithm

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. 

avatar for Xiufang Zhao

Xiufang Zhao

Senior Designer, Brandston Partnership Inc.
Xiufang Zhao graduated from the University of Pennsylvania School of Design in 2014, with expertise and 5-year experience in lighting design and daylight analysis, and extensive background in architecture. The topic of 'shading optimization based on multi-objective genetic algorithm... Read More →

Friday October 9, 2015 10:30am - 11:30am EDT
Room: Key 6

11:40am EDT

SCIENCE : Sojourn to Senegal : A Perspective on Lighting the Developing World

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.

avatar for Craig Bernecker

Craig Bernecker

Founder and Director, The Lighting Education Institute
Craig A. Bernecker, Ph.D., FIESNA, LC, founder of The Lighting Education Institute, directed the lighting education program within the Department of Architectural Engineering at Penn State University from 1981 through 1999.  During that time, the program achieved a reputation as... Read More →

Friday October 9, 2015 11:40am - 12:40pm EDT
Room: Key 6

2:00pm EDT

SCIENCE : Parametric Daylighting Tools Empower a New Design Partnership

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.

avatar for Leland Curits Jr Associate IALD

Leland Curits Jr Associate IALD

Lighting Designer, SmithGroupJJR
Leland Curtis is a lighting designer with a background in both architectural design and building system engineering. This experience enables him to blend the artistic and technical aspects of specialty lighting design to craft solutions that use both electric light and natural daylight... Read More →
avatar for Sven Shockey

Sven Shockey

Principal, SmithGroupJJR
Sven Shockey brings nearly 20 years of experience in planning, interiors, and architectural design. A Principal at SmithGroupJJR, Sven has led the planning and design of a variety of projects including large-scale mixed-use development master plans, base buildings, and numerous interior... Read More →

Friday October 9, 2015 2:00pm - 3:00pm EDT
Room: Key 6
Saturday, October 10

9:00am EDT

SCIENCE : New Color Quality Design for Attractive Lighting

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. 

avatar for Dr. Yoshi Ohno

Dr. Yoshi Ohno

NIST Fellow, Sensor Science Division, NIST
Dr. Yoshi Ohno is a NIST Fellow at Sensor Science Division of NIST in USA. He has wide range of research in photometry and colorimetry, with recent focus on measurement and color quality of solid state lighting (SSL). Specific projects of interest include integrating sphere, luminous... Read More →

Saturday October 10, 2015 9:00am - 10:00am EDT
Room: Key 6

10:30am EDT

SCIENCE : Ethics in Lighting Design

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.

avatar for David Ghatan IALD

David Ghatan IALD

PRESIDENT, C. M. Kling & Associates
David has worked in architectural lighting for the past fourteen years and theatrical design for the past eighteen. He currently serves as IALD Treasurer and on the Credentialing Task Force. In the past, he has served as coordinator for the Washington, DC USA chapter, and also served... Read More →

Meg Larkin

Postdoctoral Fellow, National Institutes of Health, Department of Bioethics

Saturday October 10, 2015 10:30am - 12:00pm EDT
Room: Key 6

1:30pm EDT


A look at how 'pop' science is influencing the work of lighting designers. Solid research is limited and a lot of what is published is either not well researched or has a commercial slant. This is not intended to be a scientific talk but rather to explore how lighting designers can make the best of utilising lighting to influence circadian rhythms or not.

avatar for Kevin Theobald

Kevin Theobald

Director, GIA Equation
Kevin Theobald has worked for the past 20 years for major London based design practices during which time he has been associated with a number of award winning schemes. He has 30 years experience in lighting, with a background in theatre and museum lighting. Kevin is a regular contributor... Read More →

Saturday October 10, 2015 1:30pm - 2:30pm EDT

1:30pm EDT

SCIENCE: Quantifying Color: A Path Forward

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.

avatar for Michael Royer

Michael Royer

Lighting Engineer, Pacific Northwest National Laboratory
Michael Royer is a lighting engineer at the Pacific Northwest National Laboratory (PNNL), where for the past four years he has worked on the U.S. Department of Energy's solid-state lighting program. He focuses on technology development issues, helping to improve product performance... Read More →

Saturday October 10, 2015 1:30pm - 2:30pm EDT
Room: Key 6

2:40pm EDT

SCIENCE : Color Tuning Luminaires : How to Evaluate Them, How To Control Them

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.

avatar for Naomi Miller

Naomi Miller

Designer/Scientist, Pacific Northwest National Laboratory
Naomi Miller straddles the line between design and engineering at the Pacific Northwest National Laboratory in Portland OR. By bridging the gap between technology and application, she promotes the wise use of LEDs, working with industry to overcome hurdles and celebrate the opportunities... Read More →

Saturday October 10, 2015 2:40pm - 3:40pm EDT
Room: Key 6