Presented by the Designers Lighting Forum of New York

March 19–20, 2024
New York Hilton Midtown, New York City

2022 Practical Application of Circadian Metrics

Practical Application of Circadian Metrics

Yaneli Rozon and Leela Shanker, Borealis Lighting Studio

March 16, 2022

10:30AM - 11:30AM

Location: Murray Hill


1 LU | HSW

With circadian entrainment issues at the forefront of lighting design, it has become critical to understand the varying metrics that have emerged. Many lighting designers have welcomed the Well Building standard Melanopic Lux criteria or have engaged with UL's Circadian Stimulus metric. Though there may be less exposure to precedents on how to apply these metrics. Using a variety of recent healthcare projects, this presentation will outline the underlying concepts and practical applications associated with lighting design for circadian impact.

Learning Objectives

  • Understanding the issues of circadian strategies in healthcare
  • Identifying areas of application for circadian lighting
  • Comparison between circadian metrics
  • Demonstration of circadian metrics calculations in a healthcare environment


Leela Shanker
Lighting Designer, Borealis Lighting Studio

Leela Shanker is a New York-based lighting designer with Borealis Lighting Studio and a contributing member to the Green-Light Alliance (GLA) - an international network of lighting professionals progressing industry-led standards, research and advocacy for circular lighting design principles. Her current work with the GLA, AIA’s Committee on the Environment (COTE) and Carbon Leadership Forum New York chapter centers on lighting-specific issues related to Embodied Carbon and Life Cycle Assessment.

In her role as Lead, Lighting with WeWork’s Global, in-house, lighting design team, Leela initiated a sustainability study into embodied carbon associated with key fixtures used in WeWork's global standards. With BR+A, this work continues in collaboration with the Lighting and Sustainability teams.

In 2021, Leela’s work with the Flint Collective NYC, a non-profit 501(c)(3) corporation she founded to improve the experience of public space through light, was recognized with a Lumen Award Special Citation for Lighting as a Tool for Social Impact by the Illuminating Engineering Society NYC in 2021.

Leela holds a Master of Architecture (Hons) and Master of Fine Arts - Lighting Design from Parsons and a Bachelor of Law and Bachelor of Commerce from the University of Sydney. She has written for lighting industry publications including Designing Lighting, Mondo Arc and illumni. Leela has guest lectured at Parsons School of Design and Syracuse University and is an active member of the IALD, IES, AIA and DLFNY.

Yaneli Rozon
Lighting Designer, Borealis Lighting Studio