Innerscene vs Sky Factory

The Problem with Single-Channel (1-Chip) White

The most common LED image panels — including Sky Factory's EcoPlus line — use a single fixed-CCT white LED (typically 6,500K). While simple and affordable, this approach has fundamental limitations for any space where occupants spend extended time:

• Static, monotonous environment: The light never changes. Real daylight shifts continuously from warm sunrise through cool midday to warm sunset. A fixed-CCT ceiling creates an unchanging visual environment that can feel claustrophobic and artificial over hours.
• No circadian support: Fixed 6,500K provides no morning-to-evening variation. Without CCT changes, the lighting cannot support natural circadian rhythms — missing the warmer tones that signal evening wind-down and the cooler, high-melanopic light that supports daytime alertness.
• Cannot reach sky-blue CCTs: While the printed image panel may depict a blue sky, the light emitted into the room is fixed at 6,500K. It cannot reproduce the very-high-CCT sky-blue range (e.g. 10,000K–200,000K) associated with clear zenith sky. Higher CCTs deliver significantly more melanopic content per lumen — a benefit that fixed-CCT systems cannot provide.
• CRI may be altered by image layer: When light passes through a printed image panel, parts of the spectrum can be absorbed, which can change the CRI of the light that actually enters the room. This effect is not characterized in Sky Factory's published EP24 documentation.
• No photometric data in published specs: Sky Factory's published EP24 documentation does not include lumen output, efficacy, CRI, R9, Duv, or melanopic data — and explicitly states the fixtures are “not designed for direct ambient illumination.”

Circadian Sky replaces the static experience with continuously tunable 2,200K–200,000K light that follows natural daylight patterns automatically, while publishing complete photometric data for every specification an architect or engineer needs.

Beyond 1-Chip and 2-Chip: Why Chip Count Matters

1-chip (fixed CCT) systems — the most common approach in backlit image panels — use a single phosphor-converted white LED locked at one color temperature (typically 6,500K). There is no spectral tunability whatsoever: the light is identical at 8 AM and 8 PM, with no ability to support circadian rhythms or track natural daylight changes.

2-chip (tunable white) systems blend a warm and cool LED channel. While they can shift CCT, the resulting colors fall along a straight line in color space rather than following the natural blackbody/daylight curve — producing visibly pink or green tints at intermediate CCTs and unable to reach the blue sky range above ~6,500K.

Sky Factory's IRIS system describes its PRiSM algorithm as using “seven weighted wavelengths,” but does not disclose the actual number of independent LED channels, publish spectral power distribution (SPD) data, or provide any measured color accuracy metrics. Without published SPD curves, melanopic efficacy ratios, Duv, or IES TM-30 data, a wavelength count alone is a marketing claim — not a verifiable specification that lighting designers can evaluate.

The chart shows how 2-chip systems (red line) produce Duv values far outside ANSI tolerances at intermediate settings, while Circadian Sky's 4+ chip ATMOS Platform (blue line) maintains Duv ≤0.003 across the entire range.

CRI & R9 Across the Full CCT Range

Sky Factory's published EP24 and IRIS documentation does not include CRI, R9, or color rendering data. Innerscene publishes complete photometric data including CRI (91–98), R9 (84–98), and full TM-30 color vector graphics at every CCT.

The chart shows Circadian Sky's measured CRI (Ra) values across the 2,200K–19,266K range, maintaining CRI >90 at every point. High R9 values are critical for accurate skin tone rendering in healthcare and retail environments.

Multi-Chip Architecture: Factory Calibrated Precision

Innerscene's ATMOS Platform uses 4+ precisely calibrated LED chip types with per-fixture factory calibration using photometric sensors. This enables 1-step MacAdam (SDCM) color consistency and accurate color reproduction across the full 2,200K–200,000K range.

Sky Factory describes their IRIS system as using “PRiSM + DiAL algorithms” with “seven weighted wavelengths,” but does not disclose the number of LED channels, publish MacAdam step consistency, or provide any measured color accuracy data.

R9 Deep Red & TM-30 Color Analysis

R9 measures how accurately a light source renders deep red — critical for skin tones, healthcare diagnostics, food presentation, and retail. Many LED fixtures have acceptable CRI but poor R9 values. Sky Factory's published documentation does not include R9 data.

TM-30, developed by the IES, evaluates color rendering using 99 color samples (vs CRI's 8), providing a far more comprehensive picture. The Color Vector Graphic shows how light affects each hue — enabling precise evaluation of color fidelity and saturation. Sky Factory does not include TM-30 data in their published specs. Innerscene provides full TM-30 analysis at every CCT.

Learn more about CRI, R9, and TM-30 →

DuoGlass™ — Window-Like Reflections

Real windows and skylights produce characteristic double reflections from their two glass panes. Our eyes unconsciously interpret these reflections as evidence that we are looking through glass into open space beyond. Circadian Sky's DuoGlass™ optics reproduce this effect using dual layers of highly reflective low-iron glass.

Sky Factory products use printed acrylic or polycarbonate SkyTiles — a single opaque image layer that produces no reflections and no depth cues. The difference is immediately apparent in person: Circadian Sky appears as an opening in the ceiling, while a backlit image panel appears as a surface on the ceiling.

Learn more about dual-reflectance optics →