Light diffusers

Light diffusers from Pyrasied

The quality of our light diffusers is exceptionally high which is due to the use of nanotechnology, precise processing and the very best additives and raw materials.

We stock the right light diffuser for every application. With the required material properties, minimal light loss, absolute colour purity and cut to size or machined into finished products. We have our own lighting laboratory and test rigs. This allows us to check the quality of the diffusers: light colour, diffusion and transmission, between batches or production series. We are also happy to provide advice on the uniform illumination of our diffusers.

Light diffusers: choice of material and properties

At Pyrasied, we offer a wide range of light diffusers made from high-quality plastics such as acrylic (PMMA), polycarbonate and PETG. Each material has specific properties, so we can always supply a diffuser that fully meets the requirements of your application. Our stock includes various thicknesses, light transmission, shapes and surface textures.

Acrylic: optimum lighting technology

Acrylic is our starting point for material selection because of its excellent lighting properties. The material is 100% colourless, UV stable, temperature resistant up to 80°C, rigid, chemical resistant and fully recyclable. With a fire classification E according to EN13501, it combines safety with maximum light transmission.

Polycarbonate: impact-resistant and flexible

Polycarbonate is ideal when a diffuser needs to be impact resistant or a higher fire rating (Bs1d0) is required. The material can withstand temperatures up to 120°C and has minimal thickness tolerance. Polycarbonate is less rigid than acrylic, allowing it to be cold bent. Many of our polycarbonate diffusers are produced UV-resistant.

PETG: safe and versatile

PETG is particularly suitable for applications where low toxicity in case of fire is required, such as in airports. The material is also food-grade certified and has good hot-bendability, with a maximum use temperature of 70°C.

Diffuser types: standard, professional and advanced

• Standard diffusers: classic opal sheets with approx. 30% light transmission, cost-efficient and versatile.
• Professional diffusers: offer light transmission of 30%-60% while maintaining good diffusion. Ideal for optimum yield at attractive price.
• Advanced diffusers: optimised for maximum efficiency with light transmittance of 60%-90%, combined with excellent diffusion.

Key terms

• Light transmission (LT): the percentage of light transmitted by a diffuser.
• Diffusion: the degree to which the light is evenly distributed so that individual light points are not visible.
• Efficiency: combination of light transmission and diffusion; the higher, the better the performance.
• Half-value corner: the spread of light; important for both advertising lighting and directional lighting.
• UGR value: measure of direct glare; some diffusers help achieve the right standard.

Practical application

The distance between LEDs and diffuser depends on transmission and application. For a standard solution with approx. 30% transmission, the distance between LEDs is equal to the distance to the diffuser plate.

A diffuser turns a non-egal light source into an evenly illuminated surface. Choosing the right type depends on several factors: type of light source, beam angle, spacing, placement options, desired light output, fire rating, impact resistance, indoor or outdoor use, maintenance and service life.

Stock and service

Our extensive stock includes diffusers in plates, tubes and round bars with a variety of characteristics. Thus, we offer maximum flexibility for virtually any application.