CRI-14 is a colour-rendering improvement (CRI) filter that warms and smooths spiky LED/HMI spectra by trimming deep blue and broad yellow-green while preserving blue-cyan and long-red. Transmission is high in the near-blue (~88–91% from ~390–430 nm), falls to ~28–30% at a narrow notch near ~460–465 nm, recovers to ~65–68% around ~490–505 nm, then settles into a gentle mid-band trough of ~44–50% across ~530–630 nm. It rises to a long-red plateau of ~92–96% from ~690–750 nm and finishes near ~91–93% by ~780 nm.
Key advantages
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Raise CRI/TLCI and R9 — reduces the ~460 nm spike and smooths the ~530–630 nm region while keeping strong long-red for natural skin, wood, food, and fabrics.
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Targeted blue notch — a controlled dip at ~460–465 nm tempers harsh LED blue without crushing blue-cyan detail.
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Balanced green shaping — broad, low-ripple ~44–50% T across ~530–630 nm avoids banding and keeps colour corrections predictable.
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High long-red throughput — ~92–96% T from ~690–750 nm supports rich reds and flattering skin tones.
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Built for production — durable dielectric stack for sets, stages, and architectural fixtures; optional rear-surface AR and slight wedge to suppress ghosts.
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Custom formats — Borofloat®, Eagle XG, or D263 T (0.21–3.8 mm) for high-temp duty to ~450 °C; soda-lime for ≤150 °C. Sizes 5–450 mm.
Typical applications
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Cinema/TV lighting — lift TLCI/CRI and skin-tone accuracy with less in-camera correction.
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Photography & events — warmer, more flattering faces and textiles under LED or HMI.
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Retail, museum & hospitality — reduce green cast and reveal natural reds in merchandise and art.
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Architectural & display — refine off-the-shelf luminaires for premium colour.
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Machine vision — balance channels where red features matter and blue/green glare is problematic.
Need test chips tomorrow or thousands next quarter? CRI-14 filters are coated and cut-to-size (including dicing) to your exact spec—fast.
