Product Overview
LD-660 is a deep red LED phosphor with a peak emission wavelength precisely positioned at 656.7nm, a dominant wavelength of 610.4nm, and a relative brightness of 14.57%. Featuring a fine particle size design (D50=10μm), it offers excellent dispersion performance and process stability, making it particularly suitable for high color rendering illumination and specialized display applications.
With its unique performance in the deep red spectral region and ultra-wide spectral characteristics (FWHM 116.5nm), LD-660 can be widely applied in high color rendering white lighting, plant lighting, medical lighting, and other scenarios with stringent requirements for red light components and R9 color rendering performance.
Core Advantages
🔴 Precise Deep Red Output 656.7nm peak wavelength positioned in deep red region, effectively enhancing R9 color rendering performance. |
🌈 Ultra-Wide Spectral Coverage 116.5nm FWHM covering broad spectral region from orange-red to deep red. |
✨ High Color Rendering Enables Ra>90 or Ra>95 ultra-high CRI white light when combined with green/yellow phosphors. |
📏 Fine Particle Size D50=10μm, excellent dispersion for SMD precision packaging and thin-layer coating. |
Key Performance Data
656.7 nm Peak Wavelength (Deep Red) |
116.5 nm FWHM (Ultra-Wide) |
14.57% Relative Brightness |
(0.667, 0.3327) CIE Color Coordinates |
Technical Specifications
| Parameter | Specification | Remarks |
|---|---|---|
| Product Model | LD-660 | — |
| Peak Emission Wavelength | 656.7 nm | Deep Red Light |
| Dominant Wavelength | 610.4 nm | Visual Red Light |
| Relative Brightness | 14.57% | Typical for Deep Red |
| FWHM | 116.5 nm | Ultra-Wide Spectrum |
| CIE Color Coordinates | x=0.667, y=0.3327 | Deep Red Region |
| Median Particle Size (D50) | 10 μm | Fine Particles |
| Correlated Color Temperature | 1001 K | Pure Red Characteristics |
| Color Rendering Index (Ra) | >80 | High CRI After Mixing |
| Compatible Chip Wavelength | 450–460 nm | Blue Light Excitation |
| Suitable Packaging Type | SMD / COB | Precision packaging |
| *All data are measured under standard laboratory testing conditions. Shelf life: 12 months. | ||
Performance Analysis
📊 Deep Red Light Contribution 656.7nm deep red light significantly contributes to R9 (saturated red) color rendering index. Even 5-15% deep red component can raise Ra from 80 to 90+, making it essential for ultra-high CRI lighting. |
📉 Spectral Characteristics 116.5nm ultra-wide FWHM covers orange-red to deep red region with excellent spectral continuity. Natural color transitions improve skin tone reproduction and warm-toned object enhancement. |
Recommended Applications
🎨 Ultra-High CRI Lighting Museums, art galleries, photography studios, and medical diagnostic lighting (Ra>90). |
🌱 Plant Lighting Supplementing red/far-red light to promote flowering and fruiting in horticultural applications. |
🍖 Fresh Food Display Meat and fruit display lighting with enhanced red color saturation for visual appeal. |
💄 Cosmetics & Retail Accurate skin tone reproduction for cosmetics counters and apparel retail lighting. |
Why Choose LD-660?
🔴 Ultimate R9 Performance 656.7nm deep red is key component for achieving Ra>90 with outstanding R9>50 saturated red performance. |
🌈 Complete Spectral Coverage 116.5nm FWHM provides full orange-red to deep red coverage for natural color rendering. |
⚙️ SMD Optimized 10μm fine particle size ensures excellent flowability for high-precision automated production. |
Packaging & Storage
| Packaging | High-seal moisture-proof bottles (100g, 500g, 1kg specifications available) |
| Storage Conditions | Store sealed in dry, cool environment (≤25℃, ≤60%RH). Avoid sunlight and corrosive gases. |
| Shelf Life | 12 months sealed; use within 6 months after opening. Mixed gel use within 2-4 hours. |
Frequently Asked Questions (FAQ)
❓ Why is 14.57% relative brightness normal for deep red? Deep red phosphors have lower visual brightness due to human eye sensitivity curve. However, even small amounts (5-15%) significantly improve Ra from 80 to 90+. Color rendering contribution is not linearly related to brightness. |
❓ What is the recommended mixing ratio? For Ra>90: Green/Yellow 60-70% + LD-660 10-15% + Red/Orange 10-20% + Blue transmission 5-10%. For ultimate Ra>95, increase LD-660 to 15-20%. |
❓ What packaging processes are compatible? SMD: ★★★★★ (recommended); COB: ★★★★☆; DIP: ★★★☆☆ (requires optimized gel viscosity). High-speed dispersion recommended for uniform mixing. |
❓ Do you support small-batch samples? Yes. We provide free small samples for testing and verification. Contact our engineers for customized light mixing solutions. |
Samples & Technical Support
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