CLAREX Low Transmission Light Diffusers (DR-IIISX)
Low transmission bulk diffusers for use directly in front of high-bright LEDs with minimal gap.
The factory loads light scattering particles and white pigments into the cast acrylic sheets along with heavy matte textures front & back to make this line of diffusers. The lower transmission levels of the DR-IIISX Diffuser line helps eliminate hot spots and allows for increased uniformity when backlit by high-bright LEDs with minimal gap between the diffuser and the light source. With a wide range of transmission levels, you can choose the diffuser that gets you maximum uniformity and brightness without hot spots.
In applications where higher transmission and/or less hiding power is needed, consider the DR-IIICX Bulk Diffusers instead.
Benefits:
- Available as thin as 0.5 mm, yet able to block up to 95% of light and provide effective diffusion
- Transmission and diffusion is the same regardless of thickness
- Extremely uniform surface brightness
- Light transmissions ranging from 5% to 40% in 5% increments
- Customizable features, including HiTemp
Common Applications
- Direct backlit displays
- Instrument clusters
- Brightness enhancement
Thickness Options
- 0.5mm
- 0.6mm
- 0.7mm
- 0.8mm
- 1.0mm
Size Options:
- Standard size: 400 x 550mm
Customization
Custom sheets & parts to meet the needs of your applications.
Build your own sheets! Do you have a unique design requirement that cannot be met with off-the-shelf acrylic sheets? The CLAREX sheets can be fully customized and produced in low volumes up to mass production. Choose the thickness, formulation, additives, color dye/pigments, surface textures, surface coatings, and optical coatings for your custom material configuration, and we can typically have it ready for you in 4-8 weeks. We can even fabricate the finished parts for you.
Transmission Curves
| DR-IIISX DIFFUSER | TOTAL LIGHT TRANSMISSION |
|---|---|
| DR-40SX | 40% |
| DR-35SX | 35% |
| DR-30SX | 30% |
| DR-25SX | 25% |
| DR-20SX | 20% |
| DR-15SX | 15% |
| DR-10SX | 10% |
| DR-05SX | 5% |
Physical Properties of CLAREX DR-IIISX Diffusers
| PROPERTY | TEST METHOD | UNIT | DR-IIIS | |
| JIS | ASTM | |||
| OPTICAL | ||||
| Refractive Index | K7105 | D-542 | – | 1.49 |
| MECHANICAL | ||||
| Elongation | K7113 | D-638 | % | 2 |
| Tensile Rupture Strength | K7113 | D-638 | MPa | 50 |
| Flexural Rupture Strength | K7203 | D-790 | MPa | 50 |
| Impact Strength (IZOD) | K7111 | D-256 | KJ/m2 | – |
| Rockwell Hardness | K7202 | D-785 | – | – |
| Pencil Hardness | D0202 | – | – | 2 – 3H |
| THERMAL | ||||
| Heat Distortion Temperature | K7202 | D-648 | °C | 108 |
| Maximum Recommended Continuous Temperature | °C | 80 | ||
| *Available with higher temperature ratings on request, 90-95ºC | ||||
| Coefficient of Thermal Expansion | K6911 | D-696 | cm/cm/°C | 7 x 10-5 |
| Coefficient of Thermal Conductivity | K1413 | D-177 | W/m°C | 0.17 |
| Heat Forming Temperature | – | – | °C | 140-180 |
| Specific Heat | K7123 | D-638 | J/kg°C | 1.47 |
| ELECTRICAL | ||||
| Volume Resistivity | K6911 | D-257 | Ωm | >1016 |
| Surface Resistivity | K6911 | – | Ωm | >1016 |
| OTHERS | ||||
| Water Absorption | K7209 | D-570 | % | 0.3 |
| Specific Gravity | K7112 | D-792 | – | 1.19 |