Dual Reflection Technology
Creates depth and distant focal points
Circadian Sky replicates a double pane window, inducing a secondary reflection pulled from natural glazing, to enhance depth and spatial perception.
The Daylight System
Circadian Sky
The world's most advanced artificial skylight. A tunable sky that shifts from sunrise through midday to golden hour, supporting circadian health from dawn to dusk.
Overview
A window to the sky,
just 3.3" deep.
Circadian Sky offers the mesmerizing appearance of infinite clear blue and sunset skies, mimicking the layered look of real glass with multiple surface reflections while preserving privacy. It leads the industry in melanopic ratio, color temperature range, and color accuracy, the clear choice for meeting multiple WELL Building Standards.
Integrated controls dynamically adjust color temperature and intensity to match the body's needs throughout the day, and the system integrates seamlessly into any space, regardless of its constraints.
- CCT
- 2,200–200,000 K
- Melanopic Ratio
- 0.4–1.9
- CRI
- 91–98
- Output
- Up to 6,000 lm
Circadian Health
Light that moves with you.
Daylight is more than illumination. It is the signal that sets the body's internal clock. Circadian Sky recreates that signal indoors, wherever a real window cannot reach.
Industry Leading Melanopic Ratio
Melanopic ratios from 0.4 to 1.9, the high and low EML the body needs across the day to stay entrained.
A Rhythm From Dawn to Dusk
An automatic schedule shifts color temperature and intensity from cool morning light to warm golden hour.
Lifelike Color
CRI 91–98, R9 up to 98, and <0.003 Duv across every CCT, so skin tones and materials read accurately.
Full Spectrum, Free of UV
The full visible spectrum of natural daylight, without the harmful ultraviolet of real sun exposure.
Built for WELL v2
Engineered to help projects meet multiple WELL Building Standard circadian lighting credits.
Clinical Grade Options
A Behavioral Health variant adds shatterproof, tamper resistant, ligature resistant hardware for patient care.
Also a Window
The skylight that's also a window.
Most people picture Circadian Sky overhead, a luminous skylight in the ceiling. But the very same panel mounts flush to any interior wall, where its double-pane depth turns a blank surface into a window onto an infinite blue sky. No exterior wall to borrow, no view to give up, no loss of privacy.
- Any interior wall
No exterior wall or structural opening required. If there's a wall, there's a view.
- Infinite-depth view
The same dual-reflection glazing reads as open sky and real distance, not a flat screen.
- Complete privacy
A window that never looks back in. All the openness of glass, none of the exposure.
- Same wellness metrics
Industry-leading melanopic ratio, 2,200 K to 200,000 K range, and CRI, whether vertical or overhead.
What Sets It Apart
Depth and color, engineered.
Precisely Calibrated Color
Accurately follows the daylight locus
With an unparalleled color temperature range of 2,200 K to 200,000 K, Circadian Sky can emulate a deep blue sky and create diverse moods. Warm light fosters comfort, while cool light enhances clarity and alertness.
Specifications
Engineered to the millimetre.
Rotate, zoom, switch sizes and toggle mounting, trim & dimensions.
- Sizes
- 1×2', 1×4', 2×2', 2×4', 1.5×4', just 3.3" deep
- Color Temperature
- 2,200 – 200,000 K
- Melanopic Ratio
- 0.4 – 1.9 (industry leading)
- Color Accuracy
- CRI 91–98 · R9 84–98 · <1 MCE · ≤0.003 Duv
- Glass
- Double reflective with paintable seamless trim
- Controls
- 0-10V, DMX, DALI, Casambi, WiFi, mobile app + zone sync
- Output
- Up to 6,000 lm with <1% dimming
- Dimming
- Flicker free at 40 kHz
- Power
- Integrated power supply
- Warranty
- 5 years · LM70 > 100,000 hours
- Safety
- UL 1598 compliant · TÜV certified
Installation
Fits into any ceiling or wall.
At only 3.3" deep, Circadian Sky integrates into virtually any architecture: dropped into a grid, framed into solid concrete, mounted to the surface, recessed flush, or specified for behavioral health environments. The wider line-up extends to wall and window arrays, clerestory glazing, and free-floating suspended clouds.
Grid Ceiling
Drops straight into standard suspended ceiling grids, the most common commercial install, with no specialty framing required.
Hard Ceiling
Unistrut framing for solid and concrete ceilings.
Surface
Slim surface mount, no recess needed.
Recessed
Sits flush in drywall for a seamless finish.
Behavioral Health
Ligature resistant build for behavioral health spaces.
Wall / Window
Vertical wall and window style arrays.
Clerestory
High clerestory style placement near the ceiling line.
Clouds — Suspended
Free floating suspended arrays for open plenums and atriums.
Resources
Documents and guides.
This product is protected by one or more patents with additional patents pending. View all patents
Design & Control
Specify with confidence.
CircadianLab is photometric design in the browser, built for Circadian Sky. Model the space, drop in fixtures, and validate the wellness metrics, then hand off a schedule the Studio app drives on day one.
- Plan the install
Sketch the room, lay out Circadian Sky panels, and see the daylight they deliver before a single fixture ships.
- Prove the metrics
Calculate melanopic EDI, illuminance, and glare live against WELL v2 thresholds, straight from the browser.
Plan Your Install
Open in Circadian Lab.
How many fixtures do you need? Circadian Lab simulates your room with real photometric data to calculate the lighting metrics that matter.
EML
Equivalent Melanopic Lux
Measures light's impact on circadian rhythm via melanopsin receptors. WELL v2 recommends 275+ EML at eye level.
Foot Candles
Illuminance
Light intensity on work surfaces. Offices typically need 30 to 50 fc; detailed tasks may need 50 to 75 fc.
UGR
Unified Glare Rating
Quantifies visual discomfort from glare. Below 19 is comfortable for office work; below 16 for detailed tasks.
18
Open in Circadian Lab
Free tool, no account required. Uses real IES photometric files for accurate simulation.
Featured Innovation
SkySync™
Sold separately
The first sensor that captures the true color of the sky and streams it to your Circadian Sky skylights in real time.
See SkySync
In the Wild
Daylight, everywhere it's needed.
The Studio App
Your sky, in your hand.
Innerscene Studio is the official app for every Circadian Sky and Virtual Sun fixture you own. Connect over Bluetooth, shape your circadian schedule, and sync with the real sky — all from your phone or tablet.
- Secure Bluetooth connection
Open the app in range of any fixture and it appears instantly, no QR codes or provisioning portals. Control stays locked behind the password you set at commissioning.
- Direct control
Color temperature, brightness, and the automatic schedule — all from a single home screen.
- Schedule editor
Draw your own circadian curve with as many keypoints as you like, then export or import it as a file.
- SkySync integration
Pair a window-mounted SkySync sensor and watch your Virtual Windows and Skylights track real sky conditions (CCT, lux, and all) in real time.
Perspectives
“Most of our guests think we have windows, and it is natural light. It creates a very nice environment and boosts you for your workout. The space also looks much bigger.”
Marion Kapellas
Spa Manager, AMAN at the Connaught
United Kingdom
Ready to bring daylight indoors?
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