Diffuser Films
Product Details:
- Material Options: PET and Polycarbonate.
- Thickness Range: 100- 500 μm.
- Light Transmittance Range: From 50% to 90%
- Roll Sizes: Standard width: 1220 mm. Length range from 100 to 1000 meters.
- Surface: Finishes available in different frost and matte levels.
Description
Opto Films are precision-engineered optical polymer films designed to control, enhance, and manage light within LED lighting, display, and backlighting systems. By selectively diffusing, reflecting, or blocking light, these films enable manufacturers and lighting designers to achieve uniform illumination, high system efficiency, and controlled visual output in compact and ultra-thin designs.
At Hexatron Technologies, our Opto Films are developed to integrate seamlessly with Light Guide Plates (LGPs), diffuser sheets, and LED modules, forming a complete and optimized optical stack for professional lighting applications.
Core Optical Functions
Opto Films play a critical role in fine-tuning light behavior within a luminaire or display system:
- Light diffusion to improve uniformity and reduce hot spots
- Light reflection to redirect unused light and increase efficiency
- Light blocking to prevent light leakage and define illumination zones
- Visual control for improved contrast, comfort, and optical precision
Each film category is engineered to perform a specific function while maintaining high optical consistency and long-term reliability.
Opto Film Product Categories
Our Opto Film family includes three primary product groups, each addressing a distinct optical requirement:
Diffuser Films
- Designed to smooth light output and reduce luminance variations, diffuser films improve visual comfort and uniformity, particularly in ultra-thin or high-brightness LED systems.
Reflector Films
- High-reflectivity films that redirect backward-emitted light toward the illumination surface, increasing overall system efficiency and reducing light loss.
Light-Blocking Films
- Opaque or low-transmission films used to mask light leakage, control light paths, and improve contrast in displays and luminaires.
Opto Films in the Optical Stack
Opto Films function as a key layer within a complete optical system:
LED Source → LGP → Opto Films → Final Light Output
By selecting the appropriate combination of films, designers can precisely control brightness, uniformity, efficiency, and light containment.
More Information
Custom Cutting & Fabrication
- Die-cut or slit to specific dimensions for efficient integration into backlight units or luminaires.
- Roll-to-sheet converting for mass production.
- Kiss-cut, score lines and perforated designs for easy assembly.
- Thermoforming of Polycarbonate reflectors.
- Double-Sided Tape Mounting.
Value-Added Services: Sampling with complex shapes without mold fee.
Materials: Comparison of PET vs PC White Reflector Films
Use this comparison table to quickly understand the differences and find the best option for your lighting project.
| Property / Feature | PET (Polyethylene Terephthalate) White Reflector | PC (Polycarbonate) White Reflector |
|---|---|---|
| Thermal Resistance | Up to ~120 °C | Up to ~140–150 °C |
| Impact Resistance | Moderate | High |
| Chemical Resistance | Good (resists many solvents) | Good, slightly more sensitive to some solvents |
| Flexibility | Good for thin sheets | Slightly stiffer at same thickness |
| Die-cutting / punching | Easy, precise | Easy, slightly tougher |
Product Tolerances
| Property | Value |
| Thickness | ±3% |
| Cut-to-Size Length / Width | ±0.3 mm |
| Reflectance Rate | ±2% |
| Light Transmittance & Haze | ±3% |
| Light Blocking Optical Density (OD) variation | ±0.1 |
Packing
1. Standard Packing Options
- Rolls:
Optical films are rolled on anti-static paper or plastic cores (6″) and tightly wound with protective liners to prevent telescoping and dust contamination.
Each roll is packed in a reinforced carton or crate for safe shipment. - Final Cut / Sheet Sizes:
Cut-to-size films are individually interleaved with protective films or kraft paper and stacked flat to prevent scratches, bending, or warping during transit.
2. Surface & Edge Protection
- Edge & Corner Protection:
Roll edges and sheet corners are secured with foam guards or plastic protectors to prevent damage from handling or vibration during shipping.
3. Palletization & Securing
- Rolls and flat stacks are palletized or crated.
- Straps, shrink wrap, and corner reinforcements keep materials stable throughout transit.
- Maximum pallet load: 800 kilograms or as specified per film thickness to prevent compression or deformation.
4. Shipping & Storage Recommendations
- Flat Storage:
Store cut-size films on a flat, clean surface, avoiding uneven pressure. - Roll Storage:
Store rolls upright on cores or suspended horizontally to prevent deformation and edge curling. - Environmental Conditions:
Maintain room temperature (20–25°C) and humidity (40–60%). Avoid direct sunlight or extreme temperature changes. - Handling:
Always wear lint-free gloves when removing protective liners to prevent contamination and fingerprints.