LUXEON CoB with CrispWhite Technology Lumileds LUXEON CoB with CrispWhite Technology features a small Light Emitting Surface (LES) and industry-leading thermal resistance. These features enable designers to create simplified and more cost-effective luminaire designs. These LEDs provide efficacies of greater than 160lm/W for 70 Color Rendering Index (CRI) and 80 CRI products. LUXEON CoB LEDs are hot tested at 85°C and available in a 3-step MacAdam ellipse. These Lumileds CrispWhite LEDs offer uniform optical performance in various applications.