Product Talk | Designing Lighting for Wellness with Robert Soler

Learn about the latest advancements in circadian lighting and its impact on health and performance. The episode features expert guidance on integrating daylight, managing glare, and customizing lighting solutions to meet diverse needs. It also discusses the evolving role of lighting in supporting human health beyond traditional illumination.

Key Highlights

  • Wellness-focused lighting influences perception, mood, focus, and responses to time, beyond just illuminating a space.
  • Key considerations include circadian rhythms, daylight integration, glare reduction, visual comfort, and sustainability.
  • Designers should inquire about spectrum, application, and performance claims from manufacturers to ensure effective wellness lighting solutions.
  • Lighting needs vary across environments like workplaces, healthcare, hospitality, and education, requiring tailored strategies.
  • The future of lighting may involve more intentional, human-centric designs that actively support health and well-being.
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Lighting can do more than illuminate a space—it can influence how people see, feel, focus, interact, and respond to the passage of time.

In this episode of Product Talk, Lauren Brant talks with Robert Soler, founder and chief scientist of BIOS Lighting, about what wellness-focused lighting actually means and what designers should consider when specifying it. They discuss circadian lighting, daylight integration, individual differences in energy rhythms, glare and visual comfort, controls, sustainability, and how lighting needs vary across workplaces, healthcare, hospitality, and education. Soler also shares what designers should ask manufacturers about wellness claims, spectrum, application, and performance—and why the future of lighting may require moving beyond the quiet ceiling toward lighting that more intentionally supports the people in a space.

Meet Our Guest

Robert Soler, Founder and Chief Scientist at BIOS Lighting

Robert Soler is a leading expert in circadian lighting and its effects on human health and performance. He has served as a subject matter expert for NASA and has advised organizations such as the Los Angeles Dodgers and the U.S. Olympic Ski and Snowboard Team, providing strategies to combat jet lag. Additionally, he collaborates with the International WELL Building Institute™ to enhance global health standards related to lighting.

Through a National Science Foundation (NSF) fellowship, Robert conducts research on circadian rhythms and works with the National Institutes of Health (NIH) on various studies in this field. He has also partnered with Cincinnati Children’s Hospital to develop specialized lighting for neonatal intensive care units (NICUs), improving outcomes for premature and newborn babies.

Recently, he received a grant from the U.S. Department of Energy for his work on circadian lighting strategies in retrofit lighting applications.

Key Moments in This Episode

02:10    What circadian lighting really means — Why tunable lighting alone doesn't automatically create a circadian-supportive environment and why intensity, timing, distribution, controls, daylight, and application matter.

03:23    The role of daylight — Soler explains why having windows doesn't necessarily mean occupants are receiving enough light for circadian support and discusses melanopic EDI.

06:00    Beyond sleep and circadian rhythms — How light can also relate to vigilance, alertness, mood, learning, focus, and overall wellness.
07:30    Circadian lighting vs. the “circadian” buzzword — Why product application matters and why color tuning alone may not provide the physiological effects designers are looking for.

11:00    Individual energy rhythms and chronotypes — How different energy patterns can affect collaboration and why providing a stronger daytime signal may help bring outliers into a tighter group.

16:34    Creating a supportive baseline — The potential role of individualized lighting at the desk, along with the challenges of accommodating different schedules and seasons.

19:25    Integrating daylight and electric lighting — Strategies involving automated shades, daylight harvesting, skylights, and electric lighting working together throughout a space.

23:50    Designing lighting for biological efficiency — Soler discusses the challenges of delivering enough biologically effective light while maintaining practical energy use and visual comfort. He discusses BIOS’s approach to combining biologically efficient and visually efficient light and shares the response to the technology at NeoCon.

30:37    Automation vs. occupant control — Why automated lighting should support the activities happening in a space, while still giving occupants a simple override.

39:03    Glare and visual comfort — Why meeting biological lighting criteria isn't enough if the resulting light is uncomfortable, and how size, distribution, and contrast ratio affect glare.

45:45    Questions designers should ask manufacturers — What to look for in spectrum, melanopic daylight efficiency ratio, application information, and evidence behind wellness claims.

50:18    Wellness and sustainability — Where the two goals intersect, where they can conflict, and why lighting needs to be evaluated for both biological and energy performance.

54:47    When materials affect lighting performance — How mass timber and green foliage can affect the distribution of blue light in a space.

57:29    Different spaces, different lighting needs — Why wellness lighting shouldn't be treated as a one-size-fits-all solution across healthcare, workplaces, hospitality, education, and other environments. Soler discusses why wellness lighting isn’t exclusively a healthcare issue and considers the needs of patients, staff, and occupants.

1:06:45    The future of the “quiet ceiling” — Why Soler believes lighting may need to become more visible and more closely resemble the experience of natural light.

1:10:40    Lightning round — Morning vs. evening light, daylight vs. tunable electric light, automation vs. occupant control, statement fixtures vs. fixtures that disappear, and lighting trends Soler hopes stay—or go.

1:12:30    Final thoughts on the future of wellness lighting — Why the conversation is shifting from designing light for the space to designing light for the people in the space.

About the Author

Lauren Brant

Staff Writer, interiors+sources and BUILDINGS

Lauren Brant is Staff Writer for both interiors+sources and BUILDINGS. She is an award-winning editor and reporter whose work has appeared in daily and weekly newspapers. In 2020, the weekly newspaper won the Rhoades Family Weekly Print Sweepstakes—the division winner across the state's weekly newspapers. Lauren was also awarded the top feature photo across Class A papers. She holds a B.A. in journalism and media communications from Colorado State University-Fort Collins and a M.S. in organizational management from Chadron State College.

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