Remote phosphor light sources are optical systems that separate phosphor wavelength-conversion materials from primary light-emitting diodes (LEDs). This architecture enables precise control of light output characteristics while improving thermal management and color uniformity. The technology plays a critical role in solid-state lighting (SSL) and display systems, offering advantages in efficiency, longevity, and color rendering compared to conventional lighting solutions.
| Type | Functional Characteristics | Application Examples |
|---|---|---|
| Ring-Type Remote Phosphor | Annular phosphor layer configuration for omnidirectional light emission | LED bulbs, tubular lighting fixtures |
| Linear Phosphor Film | Flexible phosphor-embedded polymer strips for directional lighting | Edge-lit LCD backlights, architectural lighting |
| Planar Ceramic Phosphor | Rigid ceramic phosphor plates with high thermal conductivity | High-power automotive headlights, projection systems |
| Phosphor-on-Glass (PoG) | Laser-bonded phosphor layers on glass substrates for precise patterning | Micro-display systems, augmented reality (AR) devices |
Typical remote phosphor systems consist of:
| Parameter | Typical Range | Importance |
|---|---|---|
| Color Temperature (CCT) | 2700K-6500K | Determines lighting ambiance and application suitability |
| Color Rendering Index (CRI) | 80-98 | Measures accurate color reproduction capability |
| Luminous Efficacy | 120-180 lm/W | Indicates energy conversion efficiency |
| Correlated Color Deviation ( uv) | 0.003 | Quantifies color consistency across viewing angles |
| Operating Lifetime | 25,000-50,000 hours | Defines maintenance interval requirements |
| Manufacturer | Product Series | Key Features |
|---|---|---|
| Philips Lumileds | LUXEON Remote Phosphor | 90 CRI with < 0.002 uv tolerance |
| OSRAM Opto | Ostar Projection Power | 20,000 lm output for cinema projectors |
| Cree LEDs | X-lamp XP 3535HD | Compact 3.5mm footprint with 150 lm/W efficacy |
| Nichia Corporation | Optisolis Series | Medical-grade lighting with 98 CRI |
Key considerations for implementation:
Emerging directions include: