Definition
Retail lighting uses a layered approach: ambient (300 lux), accent (750-1,000 lux on merchandise, 3-5× ambient), and decorative/perimeter. The accent-to-ambient ratio is the key design parameter — higher ratios (4:1-5:1) create drama and focus for luxury retail; lower ratios (2:1-3:1) suit mass-market and grocery. CRI 90+ is non-negotiable for retail — product colors must be accurate or returns increase.
Key Data
| Parameter | Value / Explanation |
|---|---|
| Luxury retail | Ambient 200-300 lux, accent 1,000-1,500 lux (5:1 ratio), CRI 95+ |
| Mass-market retail | Ambient 300-500 lux, accent 750-1,000 lux (2-3:1 ratio), CRI 90+ |
| Display window | 1,500-3,000 lux daytime (compete with daylight), 500-1,000 lux nighttime |
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Application Guide
Fashion boutique
COB track spots, 15-25°, CRI 95+, 3000K, 1,000 lux accent
Focused beams create highlights on fabrics; warm CCT flatters skin tones in fitting rooms
Conclusion & Procurement Recommendation
Retail lighting directly impacts sales — studies consistently show 15-30% revenue increase with professional lighting design vs basic fluorescent. The ROI on lighting upgrade in retail is measured in weeks to months, not years.