Led Light Diffuser Sheet Suppliers

Our Product Range and Where Each Category Fits

Each category below is a supplied product family with its own material logic, processing route and application fit. We produce them in-house and support custom development from pilot trial to volume delivery.

Material Selection and Application Fit

Substrate choice determines optical performance, durability and processing route. We help customers match the polymer to the fixture geometry, light source and operating environment.

• PS offers 88–92% light transmittance, high gloss and low water absorption. It is the cost-effective choice for indoor LED panel lights, backlight modules and decorative surfaces where UV exposure is limited.
• PMMA delivers 92% transmittance with intrinsic UV stability and excellent surface hardness. It suits display backlights, signage and luminaires where clarity and long-term color stability matter.
• PC provides impact resistance, a -40°C to 120°C service range and UL 94 V-0 capability. It fits transit, industrial and outdoor fixtures that must resist breakage and heat.
• PP is the lowest-density, lowest-cost option with good chemical resistance. It works in bath lights, short-lifecycle indoor fixtures and applications where ultrasonic bonding is used.
• ABS combines rigidity, toughness and a glossy finish. It is used for equipment panels, housings and appliance components that need color consistency and formability.

Optical Performance and Critical Specifications

We engineer the optical working point rather than selling a generic sheet. Haze, transmittance, thickness and surface structure are specified together because they interact in the finished fixture.

Manufacturing and Quality Control

Our Suzhou facility operates PS and PMMA extrusion lines, cutting, polishing, engraving, laser and printing equipment. A Zhongshan plant adds PS extrusion capacity. The process flow runs from sheet extrusion through inspection, cutting, polishing, laser or printing, protective film application and palletized shipment.

Quality control uses an in-house laboratory with constant temperature and humidity chambers, integrating spheres, haze meters, melt flow testers, impact testers, illuminance meters, roughness testers, optical testers, coordinate measuring machines and ball drop impact testers. We test dimensional accuracy, photoelectric performance, reliability, material composition and mechanical properties.

• Dimensional: 2.5D measurement, thickness analysis, surface layer measurement
• Photoelectric: illuminance, luminance, uniformity
• Reliability: high-low temperature cycling, aging, abrasion, scratch resistance
• Material: composition analysis, roughness, flame retardancy
• Mechanical: hardness, drop test

Custom Development and Integration Support

We support full-process customization from material formulation and micro-structured optical design through pilot trials to mass production. Our engineering team works from the customer's light source geometry, fixture depth and production target.

Typical development phases include optical simulation using the LED array pitch and intensity distribution, material formulation iteration with haze and transmittance measurement, pilot extrusion to confirm lab properties at line speed, and system-level verification in a mock-up fixture. We also provide material selection consulting, injection molding and coating process optimization, equipment operation training and on-site troubleshooting.

Information We Use to Configure Your Solution

To prepare a suitable configuration and quotation, we need the following project inputs. The more precisely these are defined, the faster we can confirm material, thickness, surface treatment and format.

Installation, Maintenance and Serviceability

Optical sheets are supplied with protective film to prevent handling damage. We confirm film type and removal timing relative to assembly, because adhesive residue is a common cause of rejection. Panels are stacked on pallets for shipment and should be stored flat in a clean, dry area away from direct sunlight.

For installed luminaires and formed components, maintenance typically involves periodic cleaning with a soft cloth and mild detergent. Abrasion-resistant and hardened surfaces reduce scratch risk in touch-exposed applications. We provide spare parts and replacement sheet supply for ongoing production.

Frequently Asked Questions

What is the difference between PS, PMMA and PC diffusion sheets?

PS offers good clarity at lower cost for indoor fixtures. PMMA provides higher transmittance and intrinsic UV stability for displays and signage. PC delivers impact resistance and high-temperature performance for transit, industrial and outdoor applications. We recommend the substrate based on the fixture environment and optical target.

Can you produce custom haze and transmittance values?

Yes. We adjust scattering agent type and loading during formulation, then verify haze and transmittance on lab instruments before pilot extrusion. This allows us to target specific optical values rather than supplying a fixed grade.

Do you supply both sheet and finished lamp products?

We supply optical sheets, vacuum-formed components and complete lamp series. This means a customer can source the diffuser, light guide plate and finished luminaire from one manufacturer, with the optical stack matched to the fixture.

What documentation is available for compliance?

We can provide RoHS compliance certificates, UL 94 flame classification reports and material test data from our laboratory. Specific documentation is confirmed against the application and destination market requirements.

How do you handle prototype to mass production transition?

We run pilot extrusion trials to confirm that lab-scale optical properties are reproducible at full line speed. Once the process window is fixed, we hold the same parameters for volume production, which reduces variation between prototype and delivered batches.