Diffusive LGP
The Diffusive Light Guide Plate (Diffusive LGP) delivers uniform LED illumination through bulk light diffusion — no laser engraving, no silkscreen printing. Diffusion particles embedded in the PMMA substrate scatter light evenly across the panel, producing consistent brightness with a visually smoother appearance than dot-patterned alternatives.
Best suited to panels up to 600 mm wide. For larger surfaces or specific uniformity targets, see Laser LGP. Typical service life: 8–10 years.
Certifications
Technical Specifications
| Attribute | Value / Range | |
|---|---|---|
| Material | Diffusive optical-grade PMMA | |
| Thickness | Typically 2 mm – 15 mm (custom options available) | |
| Maximum Recommended Width | ≤ 600 mm | |
| Surface Treatment | None (bulk diffusion) | |
| Light Input | Single-sided or double-sided edge lighting | |
| Processing | Cutting, machining, thermoforming | |
| UV Resistance | Suitable for indoor & outdoor use | |
| Service Life | Approx. 8–10 years |
Seamless Illumination Transition
Uniform Illumination: Smooth, visually comfortable light without dot patterns.
Simplified Optical Stack: Can be used without additional diffuser sheets in certain designs.
Cost-Effective Solution: Eliminates laser engraving and printing processes.
Design Flexibility: Easily adaptable to different shapes and layouts.
Dual Light Input: Supports single-sided or double-sided edge lighting.
Design & Integration Guidelines
Recommended Panel Size
Diffusive LGPs perform best in small to medium formats, particularly for panels with a width not exceeding 600 mm, where uniformity can be maintained without surface extraction patterns.
LED Configuration
- Optimized for edge-lit LED arrangements.
- Works well with both single-edge and dual-edge input designs.
- Simpler LED layout compared to laser-etched LGPs.
Diffuser Usage
Optional diffusers can be used to further soften luminance or meet glare requirements.
In many applications, no additional front diffuser is required.
When to Choose Diffusive vs Other LGP Types
- Choose Diffusive LGP if: you need smaller panels (≤600 mm), a simplified optical stack without separate diffuser sheets, clean visual appearance without visible dot patterns, or cost-effective medium-volume runs.
- Choose Laser LGP instead if: your panel exceeds 600 mm width, you need specific brightness uniformity targets above 85%, or you’re producing non-standard shapes requiring pattern optimization.
- Choose Thin LGP instead if: your luminaire requires <1 mm plate thickness.
More Information
Custom Cutting, Machining & Fabrication
Every Light Guide Plate (LGP) is fully customizable to meet your specific design and assembly requirements.
Advanced fabrication technology ensures precision cutting, optical clarity, and consistent quality for all applications.
Capabilities include:
- CNC cutting, milling, and drilling
- Laser engraving for light extraction patterns
- Edge finishing and polishing for high transparency
- Tight-tolerance machining for perfect alignment
Supports both prototype development and mass production with stable, repeatable optical performance.
Typical Tolerances Properties for Optical Grade PMMA
| Property | Typical Value / Tolerance |
| Thickness | ± 0.1 mm (3 to 15mm) |
| Dimensional (length × width) | ± 0.3 mm |
| Material clarity / defects | No inclusions, bubbles, scratches visible; optical grade |
| Uniformity | ≥ 85% uniformity depending on size; for small size often higher |
| Thermal expansion | ~ 7 × 10⁻⁵ / °C |