Choosing the Right Light Diffuser for Your Lighting Application

What appearance do you want to achieve?

The appearance of a diffuser is an important consideration, both when the fixture is illuminated and when it is switched off. Color, surface finish and light transmission all contribute to the final appearance.

Colorless or white diffusion?

Consider the surface finish

A frosted surface can contribute to a refined, consistent appearance in lighting fixtures. ACRYLITE® Satinice products feature frosted surfaces in a variety of finishes and textures, providing additional design flexibility.

Because the final appearance depends on the complete fixture design, evaluate material samples and build a prototype, particularly when several stakeholders are involved in approval.

Explore ACRYLITE® Satinice optimum light diffusion

What lighting performance do you need?

The balance between light transmission and diffusion is central to diffuser selection. The right combination depends on the fixture’s efficiency targets, desired illumination and optical design.

Light transmission and power efficiency

For lighting fixtures targeting high lumens-per-watt (lm/W) specifications, maximizing light transmission is an important consideration. ACRYLITE® Satinice optimum light diffusion enhanced offers high transmission across a range of diffusion levels, helping lighting manufacturers meet their light output and efficiency objectives.

Selecting the right diffusion level

The enhanced family offers four grades with different combinations of light transmission and diffusion.

The diffusion of standard 0D010 DF and WD008 DF depends on sheet thickness. The enhanced grades maintain their specified diffusion level across thicknesses. The grade designation identifies the diffusion level.

Explore the enhanced grades · Download technical data (PDF)

Color temperature and consistency

When color temperature is critical, maintaining consistent LED output color is important. The technical data sheet describes how colorless diffusion reduces color shift compared with pigmented white materials.

Glare and light distribution

If a fixture needs a specific photometric distribution, such as a batwing pattern, an additional optical component such as a microstructured film may be required. Evaluate the diffuser as part of the complete optical system.

Outdoor applications

Weatherability is important for fixtures exposed to outdoor conditions. ACRYLITE® Satinice optimum light diffusion 0D010 DF colorless carries a 30-year warranty against yellowing, subject to its terms. Confirm the applicable warranty and exposure conditions for your selected grade.

How is the fixture illuminated?

The illumination method plays an important role in selecting the appropriate acrylic sheet. Backlit and edge-lit fixtures use different approaches to distribute light and require materials with different optical properties.

Achieving uniform illumination with backlighting

In backlit fixtures, LEDs are positioned behind the diffuser. The diffuser distributes light across the surface, helping minimize visible hotspots and create more uniform illumination.

ACRYLITE® Satinice optimum light diffusion and ACRYLITE® Satinice optimum light diffusion enhanced feature volumetric diffusion properties that help conceal individual LEDs and distribute light throughout the sheet.

How much diffusion do you need?

The required diffusion depends on the LED configuration and the distance between the LED board and diffuser. Use the table as a starting point for comparing grades in your fixture.

Consider these factors during fixture development to determine the appropriate grade and thickness for the desired illumination.

Distributing light through the sheet with edge lighting

In edge-lit fixtures, LEDs introduce light through the edges of the acrylic sheet. ACRYLITE® LED’s light-guiding properties distribute illumination across the sheet surface. LED strips are typically positioned against the long edge of the sheet.

For wider light guides, select an ACRYLITE® LED light guiding edge lit sheet grade based on the illuminated width and LED layout. The technical brochure (PDF) provides grade recommendations and installation guidance.

For narrower fixtures, ACRYLITE® Satinice crystal surface and ACRYLITE® Satinice velvet texture extruded DP9 may also be suitable. Their frosted surfaces can produce a more pronounced, textured appearance when illuminated. Compare the appearance and brightness in a prototype.

Need help selecting the right diffuser?