CRI-10 Color Rendering Improvement Filter

Colour-rendering enhancement filter boosting CRI from typical LED and fluorescent sources to deliver richer, more natural colour reproduction for retail, broadcast, and architectural lighting.

  • Colorimetric performance
  • Target source type: Phosphor-converted white LED / fluorescent
  • CRI Ra improvement: 70 → 95+ (typical)
  • R9 (deep red) improvement: 0–20 → 90+ (typical)
  • Colour temperature shift: Moderate shift (depends on source); white-balance adjustment may be needed
  • Light output reduction: ~31.6 %
  • Spectral characteristics
  • Spectral method: Selective suppression of excess yellow-green emission
  • Key modification region: 380 – 780 nm
  • Average transmittance: ~68.4 % T (visible range)
  • Construction: Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick
  • Custom options: Source-specific tuning, combined CRI + colour temperature correction, rapid prototypes
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CRI-10 CRI delivers Target source type Phosphor-converted white LED / fluorescent, CRI Ra improvement 70 → 95+ (typical), and R9 (deep red) improvement 0–20 → 90+ (typical).

The hard-oxide coating is built for repeated handling, heat, and cleaning.

Best suited for:

Retail lighting over produce, meat, textile

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Description

CRI-10 delivers a distinct profile: dominant red peak of 95.1 % at 637 nm combined with dramatic UV suppression (only 24.9 % in UV band) and moderate NIR pass (64.5 %). The filter achieves a minimum of 10.5 % at 382 nm, establishing an effective UV cutoff. Green regions maintain strong transmission (81.9 % at 510-540 nm, 48.2 % at 540-580 nm), preserving accent colors while the yellow dip creates a natural warm-bias correction. The 68.4 % average transmission balances practical light efficiency with meaningful CRI enhancement. This red-dominant architecture suits sources requiring UV elimination alongside visible-spectrum CRI improvement.

Key Advantages

  • Dominant Deep-Red Peak - 637 nm peak at 95.1 % transmission boosts R9 and R13 CRI components dramatically; red-enhanced sources appear naturally warm and saturated without sacrificing overall brightness.
  • Aggressive UV Cutoff - UV suppression to 24.9 % eliminates ultraviolet content that degrades color perception and causes photochemical damage in sensitive applications like fine-art display and archival materials.
  • Balanced Green-Band Transmission - High green preservation (77-82 %) maintains proper color saturation and hue discrimination; sources achieve warm tone without appearing monochromatic or deficient in green accent response.
  • Ion-Assisted Hard-Oxide Durability - Red-peak filter design survives thermal cycling and continuous high-power operation; proven in museum lighting and luxury retail applications with > 5000 hour stability.
  • Custom Optical Integration Capability - Round 5-450 mm, square blanks, and bespoke free-form geometries on Borofloat, soda-lime, D263 T, Eagle XG with 0.21-3.8 mm substrate thickness for any fixture design.

Typical Applications

  • Museum & Heritage Site Lighting - Paintings, textiles, and artifacts illuminated with CRI-10 avoid UV-induced degradation while achieving accurate color rendering; conservation reports document photochemical stability across exhibition seasons.
  • Luxury Retail Warm Ambiance - High-end boutiques and jewelry stores benefit from CRI > 95 warm tone without fluorescent coolness; customers perceive premium products as more desirable and are willing to pay higher prices.
  • Residential Hospitality Lighting - Hotel suites and residential lighting achieve incandescent-equivalent warmth with LED efficiency; guests experience 'luxury' ambiance that increases satisfaction scores and repeat booking rates.
  • Cosmetics & Beauty Retail Display - Makeup and skincare products rendered under CRI-10 lighting appear more vibrant and appealing; customers perceive makeup shades as true-to-application without color shifts after purchase.
  • Wine Tasting Room & Fine Dining - Restaurant and wine-bar ambiance achieves warm CRI with zero UV flicker that fatigues vision; diners relax under soft, natural lighting that enhances food appearance and wine color perception.

CRI-10 samples available in 3-4 weeks; production supports custom mounting, substrate selection, and volume pricing from 50 units upward for hospitality and retail integrators.

FAQ

CRI-10 FAQ

What is CRI-10 and what is it used for?

CRI-10 is a Red-Peak Filter with UV Suppression. CRI-10 delivers a distinct profile: dominant red peak of 95.1 % at 637 nm combined with dramatic UV suppression (only 24.9 % in UV band) and moderate NIR pass (64.5 %). The filter achieves a minimum of 10.5 % at 382 nm, establishing an effective UV cutoff. Common uses include Museum & Heritage Site Lighting, Luxury Retail Warm Ambiance, Residential Hospitality Lighting, and Cosmetics & Beauty Retail Display.

What are the key optical specs of CRI-10?

Key published specs for CRI-10 include Target source type: Phosphor-converted white LED / fluorescent; CRI Ra improvement: 70 → 95+ (typical); R9 (deep red) improvement: 0–20 → 90+ (typical); Colour temperature shift: Moderate shift (depends on source); white-balance adjustment may be needed; Light output reduction: ~31.6 %.

What applications is CRI-10 best suited for?

CRI-10 is commonly used for Museum & Heritage Site Lighting, Luxury Retail Warm Ambiance, Residential Hospitality Lighting, and Cosmetics & Beauty Retail Display. Museum & Heritage Site Lighting - Paintings, textiles, and artifacts illuminated with CRI-10 avoid UV-induced degradation while achieving accurate color rendering; conservation reports document photochemical stability across exhibition seasons.

Can CRI-10 be customized for size, substrate, or coating requirements?

KUPO lists the construction for CRI-10 as Ion-assisted hard-oxide; 5 – 450 mm shapes, 0.21 – 3.8 mm thick. Published custom options include Source-specific tuning, combined CRI + colour temperature correction, rapid prototypes. Custom Optical Integration Capability - Round 5-450 mm, square blanks, and bespoke free-form geometries on Borofloat, soda-lime, D263 T, Eagle XG with 0.21-3.8 mm substrate thickness for any fixture design.

What should I know about angle of incidence and durability for CRI-10?

The hard-oxide coating is built for repeated handling, heat, and cleaning.

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