When selecting COB (Chip-on-Board) downlights for professional use, CRI is a top priority, but it’s not the only factor. To ensure exceptional color accuracy and performance, here’s what to look for:
1. Check the CRI Rating
Start by looking for a CRI of 90 or above, especially for applications in retail, hospitality, galleries, or any space where color fidelity is essential. A CRI ≥95 is ideal for museums, design studios, and makeup spaces where fine detail and color grading matter.
2. Look for R9 Value
Most CRI ratings average the first eight test colors (R1–R8), but R9 represents how well deep red is rendered—critical for skin tones, food, and artworks. A high R9 value (above 50) indicates superior rendering of warm hues.
3. Ask for Samples or Demos
Manufacturers may label CRI values inaccurately. Ask for sample units or demo testing, especially if you’re lighting large or high-profile projects. Observe the difference in color rendering compared to natural daylight or other reference lighting.
4. Check for Certifications
Look for lighting products with certifications like LM-80, TM-30, or Energy Star. These not only verify performance but often include accurate photometric data and CRI disclosures.
5. Match Other Specs to the Application
- Color temperature (CCT): Choose 2700K–3000K for warm ambiance or 4000K+ for clarity in workspaces.
- Beam angle: Consider narrow beams for accent lighting or wider angles for general lighting.
- Dimming capability: Ensure consistent color rendering across all dimming levels.
6. Trusted Brands or Proven Models
Stick with reliable brands or models that are tested in real-world projects. Reviews and project case studies often give clues about a downlight’s CRI consistency and longevity.
Tip: Look for COB downlights marketed as “high CRI,” “color-true,” or “museum-grade.”
Choosing the right COB downlight is about balancing technical data with practical testing, especially when color fidelity directly influences customer perception and space quality.
