Illuminance, measured in foot-candles or lux, has long been the metric used to recommend lighting levels for specific applications. From Waldram’s Designed Appearance Method to Cuttle’s Mean Room Surface Exitance (MRSP) approach, there has been considerable interest over the years in moving away from illuminance as a basis for lighting design in favor of luminance and exitance.
This session will provide participants with a perspective of illuminance recommendations over time, along with a bit of history of some of the approaches to design criteria beyond illuminance. But it then takes the perspective that two metrics are likely necessary to adequately address end users’ perception of the adequacy of illumination in various applications.
This paper explores the combination of illuminance and MRSP in a systematic way through a series of analyses of representative applications to determine the efficacy of these metrics for lighting design recommendations and practice. Both illuminance and MRSE are determined for a series of scenarios using multiple room sizes, reflectances, and lighting systems for several application types (e.g., office, classroom, conference room, etc.). Proposed recommendations for these two parameters are then suggested for a variety of applications.
Dr. Bernecker has been a lighting educator for over 40 years. He is founder of The Lighting Education Institute, providing professional education, and Professor of Lighting Design and Director of the Masters of Fine Arts in Lighting Design program at Parsons School of Design, The... Read More →
Tuesday September 15, 2026 12:00pm - 1:00pm CDT TBA
The scale of outdoor lighting offers bigger challenges for controls selection and operation. Installation costs, encompassing wiring and labor, can be prohibitive. Post-installation adjustments can require burdensome additional efforts. Wouldn’t it be great if there was some control solution that bypassed these challenges yet offered superior control capabilities and ease of installation? Enter DALI! By using this open standard, project professionals can unlock a range of benefits including: • Multi-vendor compatibility for luminaires, drivers, sensors, and controllers without being locked in to a single vendor’s solution • Design flexibility and future proofing with individual addressability, ease of grouping or regrouping • Flexible design and future-proofing • Reduced operating costs with predictive maintenance reports on failing components • Centralized remote monitoring with fault detection and integration into other building management systems
This session delves into the use of DALI standards for designing outdoor control projects like parking garages and other site lighting applications. The panelists explore common misconceptions, best design and installation practices, and lessons learned from real-world projects.
Nathan Harris is a lighting controls professional with nearly 20 years of experience, specializing in the design and implementation of intelligent control systems that improve building performance, occupant experience, and long-term flexibility. At Texas Lighting Solutions, he works... Read More →
Executive Vice President at mwConnect, a pioneering lighting and IoT company headquartered in Sacramento, California, Stephen is responsible for overseeing the company’s daily operations and managing its subsidiaries across Asia. He leads a cross-functional R&D team that has developed... Read More →
Carol is an industry veteran and national leader in market transformation working on the digitization, standardization, and interoperability of commercial lighting. She has a diverse background having been a lighting designer, a ‘labbie’ at Pacific Northwest National Laboratory... Read More →
Tuesday September 15, 2026 1:00pm - 2:00pm CDT TBA
This introduces ANSI/IES LP-30, which presents a phase-by-phase implementation of TM-30, from schematic design to construction documentation. TM-30 is a method for evaluating color developed by the Illuminating Engineering Society (IES) that uses design intents of Preference, Vividness and Fidelity to assess and improve lighting quality. By understanding the TM-30 information gathered at each stage of design, designers can create lighting solutions with a broader range of color rendering goals that meet specific requirements and enhance overall environments. Integrating TM-30 into design processes and specification documents ensures that the desired lighting characteristics are achieved and maintained throughout the project. The informative presentation will be followed by a demonstration of light sources that support the design intents of Preference, Vividness, and Fidelity and their influence on color perception.
Jason is the principal of Studio T+L, a lighting design and theatre consulting firm in Brooklyn, New York. His lighting design work ranges from hospitality to houses of worship, and from commercial offices to performing arts centers and experiential spaces. He is also the Co-Chair... Read More →
Tuesday September 15, 2026 1:00pm - 2:30pm CDT TBA
Highlighting the capabilities of using a singular platform of controls. Leverage the core and shell of a building control system to control the lighting, as well as deploy an infrastructure of fully networked building. Allows users to be able to have a smart building, running efficiently, automatically and provides key data points to allow for key business decisions.
With over 15 years of deep-rooted experience in the LED lighting industry, Gary Harvey has been at the forefront of the digital lighting revolution. Throughout his career, he has transitioned from mastering the technical nuances of illumination to pioneering the future of Integrated... Read More →
Tuesday September 15, 2026 3:00pm - 4:00pm CDT TBA
As protocols, networked systems, and software-driven platforms evolve faster than traditional project delivery models, the gap between design intent and field reality in modern lighting systems continues to widen. This one-hour panel, proposed by members of the United Lighting Controls Forum (ULCF) and the Council for Lighting Controls Startup and Integration (CLCSI), is designed for technicians, integrators, distributors, and industry leaders who are navigating this rapid change firsthand. Panelists will represent both the technician perspective through ULCF members and the distributor and sales channel perspective through CLCSI members, offering a balanced view of the challenges shaping today’s lighting and building environments. Drawing from direct involvement in design, coordination, commissioning, startup, and long-term system support, this moderated discussion will focus on lessons learned rather than debating whether emerging technologies are “good” or “bad,” the panel will center on what the boots on the ground are actually experiencing, the gaps between involved parties and how they are looking to bridge the.Topics will include the real-world impacts of new and evolving protocols, interoperability challenges, documentation and labeling gaps, and the growing role of IT infrastructure and network security in lighting systems. Attendees will leave with clearer insight into where friction is occurring, what markers indicate a successful installation in this new landscape, and how stronger collaboration across manufacturers, distributors, integrators, and technicians can improve outcomes. This session aligns directly with the mission of the ArcLight Summit conference by fostering informed dialogue, raising competency, and helping the industry adapt responsibly to rapid technological change.
