Technical Specifications
| Material | Polycarbonate (PC), light-diffusing grade |
| Appearance | Frosted |
| Light Transmission | 30–80% (grade-dependent) |
| Light Diffusion | High (uniform light spread, reduced hotspots) |
| Density | ~1.20 g/cm³ |
| Tensile Strength | ~60–70 MPa |
| Flexural Strength | ~85–95 MPa |
| Impact Resistance | Very high (virtually unbreakable vs acrylic) |
| Service Temperature | −40°C to +115°C |
| Heat Deflection Temp (HDT) | ~130–140°C |
| UV Resistance | Moderate |
| Weather Resistance | Good |
| Chemical Resistance | Good to weak acids; poor to solvents |
| Applications | LED light panels, signage, architectural lighting, ceiling diffusers |
Certifications & Downloads
Polycarbonate Light Diffuser
Polycarbonate light diffuser sheets provide superior strength, impact resistance, and light control compared to standard acrylic. At 3 mm thickness and a size of 2440 × 1250 mm, they deliver even…
Optional finishing services - toggle any you need.
Optional. Add drilled holes to your piece.
Acrylic only - optical-grade edge finish
Pick which edges to polish.
Flame polish is only available on acrylic.
Manual router - per-corner price scales with thickness
Rounded or 45 degree bevel - per-metre rate x thickness
Why choose Polycarbonate Light Diffuser?
Key Benefits of Polycarbonate over Acrylic Diffusers:
- Impact Resistance: Polycarbonate is up to 250 times stronger than glass and significantly tougher than acrylic , making it ideal for high-impact or vandal-prone areas.
- Heat Resistance: With a higher softening point, polycarbonate performs better under high-temperature lighting conditions.
- Durability: Superior UV and weather resistance ensures long-term clarity and performance, even in harsh environments.
- Safety: Its shatter-resistant properties make it a safer alternative in public spaces and industrial lighting systems.
Polycarbonate Light Diffuser Sheets provide superior strength and impact resistance compared to traditional acrylic diffusers. Designed for lighting panels, skylights , and commercial fixtures, these sheets offer excellent light transmission while reducing glare and hot spots, ensuring even illumination in both indoor and outdoor environments.
Available in a range of thicknesses, patterns, and light diffusion levels, polycarbonate diffusers deliver a reliable, energy-efficient solution for modern lighting applications where strength and clarity are equally important.
Ready to order your Polycarbonate Light Diffuser?
Cut to size, precision finished and dispatched Australia-wide. Not sure which material suits your job? We'll help you choose the right one.
Technical Specifications
| Material | Polycarbonate (PC), light-diffusing grade |
| Appearance | Frosted |
| Light Transmission | 30–80% (grade-dependent) |
| Light Diffusion | High (uniform light spread, reduced hotspots) |
| Density | ~1.20 g/cm³ |
| Tensile Strength | ~60–70 MPa |
| Flexural Strength | ~85–95 MPa |
| Impact Resistance | Very high (virtually unbreakable vs acrylic) |
| Service Temperature | −40°C to +115°C |
| Heat Deflection Temp (HDT) | ~130–140°C |
| UV Resistance | Moderate |
| Weather Resistance | Good |
| Chemical Resistance | Good to weak acids; poor to solvents |
| Applications | LED light panels, signage, architectural lighting, ceiling diffusers |
Certifications & Downloads
Frequently Asked Questions
What is a polycarbonate light diffuser?
How does polycarbonate compare to acrylic for light diffusers?
Is polycarbonate suitable for LED lighting?
What light transmission options are available?
Can polycarbonate diffusers handle heat from lighting?
Need this custom cut or fabricated?
Send us your drawing (DXF, DWG, PDF, EPS, STEP) and we'll quote your Polycarbonate Light Diffuser to spec.
What you can make with Polycarbonate Light Diffuser
Acrylic Light Diffuser Panels
Opal and diffuser acrylic and polycarbonate panels for even LED light spread in troffers, signage, and ceiling installations. Cut-to-size service available.
Mining Machine Guards & Safety Screens
Heavy-duty polycarbonate and HDPE machine guards for mining equipment, crushers, conveyors, and processing plants. Impact-resistant, cut to size, and delivered Australia-wide.
Acrylic Privacy Screens
Custom acrylic and polycarbonate privacy screens cut to size for balconies, fences, offices, and outdoor living areas. Frosted, tinted, and clear options available Australia-wide.
Amusement Glass
Replacement acrylic panels for arcade, pinball, and vending machines.
Data Centre Enclosures
Polycarbonate tube and sheet enclosures for cable and sensor runs.
Air Conditioner Covers
Custom cut acrylic, polycarbonate and HDPE air conditioner covers. Screen outdoor units, protect from weather and keep airflow clear. Cut to size, shipped Australia-wide.
Boat Window Replacements
Clear Perspex replacements for boat windows, windscreens, and portholes.
Sight Glasses & Inspection Windows
Clear polycarbonate and acrylic sight glasses for tanks, hoppers, pipelines, and process equipment. Impact-resistant, cut to size with drill holes for bolted flanges.
Guides & articles
Top 10 Ordering Mistakes With Plastic Materials (And How to Avoid Them)
Avoid common plastic ordering errors by selecting proper thickness, material type, and UV resistance; ensuring precise measurements; considering tolerances; and consulting suppliers for smooth, cost-effective projects.
Read guide →guidesThe Ultimate Guide to Choosing Cut-to-Size Plastic Sheets for Trade and DIY Projects
Guide to cut-to-size plastic sheets: choose the right material (acrylic for clarity, polycarbonate for strength), select proper thickness and finish for durability and look, and use precision cutting and custom fabrication for best results.
Read guide →fabricationFrom CAD to Cut: The Science and Technology Behind Precision Cut-to-Size Plastics
Perspex Online uses advanced CAD/CAM, CNC routing, and laser cutting technologies for precise, high-quality plastic fabrication. They offer diverse materials, eco-friendly options, instant quotes, nationwide delivery, and expert support.
Read guide →guidesTop Plastic Material Problems-and How Expert Cutting and Fabrication Prevent Them
Expert cutting and fabrication prevent common plastic issues like melting, chipping, cracking, and scratches. Precision CNC routing, laser cutting, and proper handling ensure durable, high-quality results.
Read guide →applicationsThe Role of Perspex Signage and Branding
What is Perspex Signage? Perspex Signage refers to signs made from Perspex, a brand name for high-quality acrylic sheet. These signs utilise the excellent clarity, durability, and light weight of acrylic to make effective visual communication. They have high optical clarity that allows for bright and readable graphics. Their durability ensures them to last long, […]
Read guide →fabricationTips for Cutting, Shaping, and Working with Plastic Materials
Plastic is a versatile material used for various projects, starting from simple crafts and up to the more complicated engineering designs. However, plastic can be very tricky if you do not know the proper ways of using it. Here are some tips in cutting, shaping, and working with plastic materials effectively: Choosing the Right Tools […]
Read guide →Processing Services
Services available for this product
CNC Routing
Profiling, drilling, and countersinking in polycarbonate sheet.
Learn moreFabrication
Cold bending, thermoforming, and assembly of polycarbonate.
Learn moreMachined Parts
Precision polycarbonate components for guards and enclosures.
Learn moreLaser Cutting
Laser cutting for thin polycarbonate film and sheet.
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