Specifying Circadian Lighting in the Browser
Thursday, July 2, 2026 · 11:00 AM–12:00 PM .
Daylight + electric in one radiosity solve, WELL v2 L03 and ANSI/IES RP‑46‑25 compliance, UGR per CIE 117:1995, and a 250,000+ IES fixture library — built for architects and lighting designers. Free, no credit card required.
What you'll take away
- ✓Read mel-EDI like a pro — apply CIE S 026:2018 melanopic EDI correctly and evaluate the same heatmap against both WELL v2 L03 (150 / 275) and the newer ANSI/IES RP-46-25 (≥250 mel-EDI daytime minimum).
- ✓Fix the vertical-mel-EDI gap that makes ceiling-only schemes pass desk lux but fail L03 at eye level — using wall-mounted fixtures, tilt, or tunable CCT.
- ✓Co-simulate daylight and electric in one radiosity pass with NREL Solar Position Algorithm and the Perez sky model at any date, time, and lat/lon.
- ✓Evaluate UGR per CIE 117:1995 with Guth position index, mapped across the room and per occupant.
- ✓Specify with real photometry from a 250,000+ IES library (Acuity, Cooper, Signify, Cree, Erco, iGuzzini, BEGA, Artemide and more) — or upload custom IES with a melanopic DER override.
- ✓Hand off a stamped PDF with directional heatmaps and a WELL / RP-46 compliance summary, plus a shareable session URL for client and engineer review.
Save your seat
Free. No credit card.
Agenda
What we'll cover
The photopic / melanopic gap
Why a 500-lux desk can still fail WELL L03, in one slide.
Metrics that matter
mel-EDI vs lux, melanopic DER vs CCT (2,700K → 200,000K), WELL v2 L03 Tier 1/Tier 2, ANSI/IES RP-46-25 ≥250 daytime minimum, UGR per CIE 117:1995.
Live demo — Open-plan office
Drop a stock Lithonia troffer grid from the 250K library. Desk lux passes, vertical mel-EDI fails. Swap to wall-mounted at 1.2 m or a circadian troffer to clear the 75%-of-workstations threshold.
Live demo — Daylight + electric, one solve
Add south-facing windows and a skylight. NREL SPA sun beam, Perez sky, real lat/lon. Watch electric load offset as daylight fills the perimeter.
Live demo — Patient room
Vertical eye-level mel-EDI for a recumbent occupant, per-occupant UGR from the bed looking up, occupant placement, wall fixture tilt for compliant healthcare design.
Custom fixtures, reports, collaboration
Upload an IES with a custom melanopic DER override. Generate the PDF with WELL / RP-46 summary and fixture schedule. Share the live session as a URL.
Trust the numbers
The automated test suite, the IES files used as ground truth, and where the assumptions live: CIE S 026:2018, CIE 117:1995, NREL SPA, Perez.
Q&A and a free mock-up
A few questions live, and one or two attendee rooms pulled into the tool on screen. Share your room dimensions, fixture, and location in the chat or after the session and we'll mock it up in CircadianLab and email you a share link to keep iterating on.
Your Host
Jonathan Clark
CEO, Innerscene
FAQ
Common questions
Is the webinar free?+
Yes. The webinar and CircadianLab are both free. No purchase required.
Will the session be recorded?+
Yes. Every registrant receives the recording link by email the day after the live event, whether or not they attended.
Who is this for?+
Lighting designers, architects, healthcare facilities teams, electrical engineers, and anyone responsible for designing or specifying circadian lighting in healthcare, office, or residential spaces.
Do I need to install anything?+
No. CircadianLab runs entirely in the browser — no signup, no install, no data leaves your computer.
What software competes with CircadianLab?+
For EML specifically, no other browser-based tool exists. Desktop tools like AGi32, Dialux, and Relux can compute illuminance and UGR but require separate spreadsheets or plugins to compute melanopic lux against WELL v2 targets.