CRI-1 Color Rendering Improvement Filter

CRI-1 delivers a bold red boost with peak transmission of 95.1 % at 772 nm while aggressively suppressing the blue-violet region. The filter achieves minimum transmission of 21.2 % at 427 nm, creating a dramatic spectral valley that cuts problematic violet content. This red-dominant profile (83.8 % R band pass) combined with suppressed blue (47.8 %) generates authentic warm-white tonality. The 67.9 % average transmission ensures sufficient flux while reshaping the spectral power distribution to elevate warm white CRI scores.

Key Advantages

• Red-Dominant Architecture - 85 % + transmission in the red region (700-850 nm) combined with blue valley at 427 nm creates powerful warm-tone enhancement that boosts R9 and R13 CRI components without sacrificing overall brightness.
• Minimal Green Band Erosion - Green regions maintain 51-57 % transmission, preserving accent colors and skin-tone accuracy while still suppressing the yellow-green excess typical of phosphor-converted LEDs.
• Deep Blue Suppression - Blue band transmission at 47.8 % creates aggressive short-wavelength filtering that eliminates the cool cast many LED sources exhibit, instantly warming perceived color temperature.
• High-Durability Ion-Assisted Coating - Hard-oxide, ion-assisted design withstands continuous high-power stage and broadcast illumination without delamination or wavelength shift over thousands of operational hours.
• Custom Format Versatility - Available as round 25-450 mm, square blanks, and free-form geometries with substrate options including Borofloat, soda-lime, Schott D263 T, and Corning Eagle XG at 0.21-3.8 mm thickness for any fixture integration.

Typical Applications

• Stage & Theater Lighting - Warm-color gobos and wash fixtures gain naturally warm CRI with 95 % light output, eliminating the need for secondary warm-white units while maintaining full color saturation.
• Hospitality & Retail Displays - Merchandise and product lighting instantly appear more inviting and natural; skin tones photograph warmer and more appealing without requiring color-graded post-processing.
• Architectural Accent Lighting - Building facsimers and feature walls benefit from natural warm enhancement; cornice and soffit washing appears richer and more luxurious than unfiltered LED sources.
• Broadcast Studio Lighting - Talent lighting achieves CRI > 95 with authentic warmth; the 427 nm notch eliminates the technical blue peak that degrades skin-tone rendering on HD and 4K cameras.
• Emerging Augmented Reality Lighting - Precise spectral shaping ensures virtual lighting overlays in AR applications match real-world warm-tone expectations; critical for commerce and entertainment applications.

CRI-1 prototypes ship in 2-3 weeks from sample validation; production batches support custom sizes, substrate selections, and OEM volume pricing from 100 units upward.