Traffic Signal LED
Phosphor Solutions
Professional supplier for red, green, yellow signal LED phosphors. With 10+ years R&D experience, our technical team consists of 5 PhDs and 12 senior engineers. Products validated for multiple traffic industry applications, meeting GB14887 and EN12368 standards.
Core Requirements for Traffic Signal Phosphors
Critical technical challenges for traffic signal LED applications
High Brightness Output
Signal lights must maintain high visibility under strong ambient light. Phosphor brightness must exceed 100% for clear long-distance recognition.
Precise Color Coordinates
Red, yellow, green must comply with international traffic standards (GB14887, EN12368), with minimal color coordinate deviation.
Excellent Long-Term Stability
Outdoor environments require resistance to high-temp (≤85℃), humidity (≥95%RH), and UV. Ensures <20% decay over 5+ years.
High Batch Consistency
Core parameters with minimal variation. Color coordinate tolerance controlled within ±0.003 for consistent mass production.
Package Compatibility
Must adapt to mainstream traffic signal packaging forms with good encapsulant and substrate compatibility.
Traffic Signal Phosphor Product Solutions
Professional phosphor solutions for traffic signal lighting
Green Signal Phosphors
High-brightness green phosphors optimized for human eye sensitivity
| Model | Peak λ | Rel. Brightness | CIE Coordinates | Key Advantages | Applications |
|---|---|---|---|---|---|
| LD-569H-17 | 555nm | 113% | (0.4352, 0.5416) | Peak human eye sensitivity | Arterial roads, highways |
| LD-3357(25μm) | 525nm | 101.6% | (0.332, 0.5641) | Large particle stability | Regular intersections |
| FL-4255 | 545nm | 110.01% | (0.4255, 0.5488) | Ultra-high brightness | Warning signals, tunnels |
555nm = Peak Human Eye Sensitivity
Optimal Visual Brightness
Red Signal Phosphors
Pure deep red phosphors compliant with national standards
| Model | Peak λ | Rel. Brightness | CIE Coordinates | Key Advantages | Applications |
|---|---|---|---|---|---|
| LD-640C | 635nm | 35.9% | (0.6665, 0.3332) | Pure deep red, precise coordinates per national standards | All traffic red lights, railway signals |
635nm Deep Red
GB14887 Compliant
Yellow Signal Phosphors
High-visibility yellow phosphors for warning applications
| Model | Peak λ | Rel. Brightness | CIE Coordinates | Key Advantages | Applications |
|---|---|---|---|---|---|
| LD-571M15-0.6 | 561nm | 108.2% | (0.4618, 0.5238) | Pure yellow-green, large particle settling stability | Traffic yellow lights, warning flashers |
561nm Yellow-Green
Warning Visibility Optimized
All green phosphors are optimized for human eye visual characteristics, with peak wavelengths covering 525-555nm mainstream green region. LD-569H-17's 555nm wavelength precisely matches the most sensitive band of the human eye, improving visual recognition by over 30% in bright light. Red LD-640C uses special doping to ensure pure deep red without stray light, with color coordinates strictly meeting GB14887 requirements. Yellow LD-571M15-0.6's large particle design improves settling stability during packaging.
LD-569H-17 packaged with blue chips achieves signal visibility distance of 800+ meters under midday strong light (100,000 lux). All products after simulated outdoor aging tests (2000 hours at 85℃, 2000 hours at 85%RH humidity, 3000 hours UV aging) show luminescence intensity decay ≤15% and color coordinate drift ≤0.002, fully meeting 5+ year stable use requirements. Batch-to-batch color coordinate tolerance is controlled within ±0.003.
Traffic-Grade vs Standard Lighting Phosphor
Key performance comparison
| Characteristics | Traffic-Grade Phosphor | Standard Lighting Phosphor |
|---|---|---|
| Color Coordinate Precision | Extremely high (tolerance ±0.003, traffic standard compliant) | Average (tolerance ±0.008, meets basic lighting) |
| Outdoor Weather Resistance | Excellent (temp/UV resistant, <20% decay in 5 years) | Poor (>30% decay in 1-2 years outdoors) |
| Strong Light Visibility | High (adapts to bright conditions, long-distance visible) | Low (easily obscured in sunlight) |
| Batch Consistency | Extremely high (ensures controlled deviation in mass production) | Average (significant batch variation) |
| Package Compatibility | Strong (fits traffic light packaging, heat dissipation design) | Limited (incompatible with outdoor fixture needs) |
Technical Advantages & Commercial Value
Our traffic signal phosphors deliver significant commercial value
Precise Color + High Brightness
Ensures signal compliance with international standards→Avoids compliance risks, enables market entry
Excellent Long-Term Stability
Matches 5+ year signal lifespan→Reduces maintenance costs, improves reputation
High Batch Consistency
Ensures mass production efficiency→Avoids rework from material variation
Custom Color Coordinates
Meet standards of different countries→Expand global market opportunities
Test Our Quality Firsthand
Request a free phosphor sample kit to test in your production line. Evaluate performance, processing compatibility, and quality before committing.
Application Industries
Comprehensive coverage of traffic signal applications
Road Traffic Signals
Arterial/secondary road traffic lights, highway entrance/exit signals, roundabout warning signals.
Special Traffic Signals
Railway signal indicators, airport runway signals, port and dock traffic signals.
Warning Signal Equipment
Road construction warning lights, tunnel guidance signals, bicycle lane signals.
Traffic Signal Industry Services
Comprehensive support for traffic signal applications
Color Coordinate Customization
One-on-one phosphor selection and color coordinate fine-tuning based on various national traffic signal standards (GB14887, EN12368, IEC60809).
Packaging Process Guidance
Phosphor ratio, encapsulant selection, and heat dissipation optimization guidance for mainstream traffic signal packaging to ensure production yield.
Fast Sample Delivery & Production Support
30g-100g samples shipped within 3 working days. Clear timelines (7-10 days standard, 15-20 days special). MOQ as low as 1kg. 24-hour after-sales response.
Certified Excellence
Multiple certifications for traffic-grade reliability
We have established a comprehensive traffic signal phosphor quality management system through multiple authoritative certifications including CNAS, RoHS, SGS and traffic equipment material certifications. All products undergo rigorous testing including color coordinate precision, brightness, particle distribution, weather resistance, and packaging compatibility, with detailed factory inspection reports and batch traceability support. With profound technical expertise, we have obtained more than 10 phosphor-related invention patents covering China, USA, EU, Russia, and PCT international patent systems.
Get Traffic Signal Industry Solutions Now
Contact us for free consultation and samples
Free Selection Consultation
Professional engineers provide phosphor selection guidance based on your signal standards requirements
Color Coordinate Customization
Fine-tuning color coordinates to meet different national and regional traffic signal standards
Fast Sample Delivery
30g-100g samples shipped within 3 working days worldwide with tracking
Full Production Support
On-site technical debugging, 24-hour after-sales response, full production support