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Optical Diffusers homogenize and directionally shape light with high transmission efficiency and excellent hiding power. Available in seamless rolls on polycarbonate, polyester or acrylic substrates, including UV-stable or UL-approved substrates, we offer products with elliptic and circular outputs in a variety of substrates, sizes and angles from small to extreme.
The low back-scatter of LSD structures are anti-reflective in
nature and utilize light that would otherwise be wasted due to Fresnel
loss. A clear piece of polycarbonate substrate is 89% transmissive.
With LSD, transmission improves to 92%.
We can custom cut luminit diffuser films to your specifications, and offer low-cost Injection Molded (IM) lenses that can be designed in a variety of shapes and sizes in symmetrical and asymmetrical beam angles for any LED module design.
|LSD Angle Range (FWHM):||Circular: 0.5° to 100° / Elliptical: minor: 1° to 60° ; major: 10° to 80°|
|Transmission Efficiency:||Circular: 0.2° to 20° ≥ 90% ; 20° to 80° ≥ 85% Elliptical: ≥ 85%|
|Angle Tolerance: (Based on a 10”x10” area)||< 1° ± 0.5°, (>1° < 10°) ± 1°, >10° ± 10%|
|Transmission Spectral Range:||300nm to 1500nm|
|Temperature Range:||-30°C to 80°C @ 240 hours|
|Humidity:||> 95% ± 5% RH @ 24 hours|
|Refractive Index:||PC=1.586; PE=1.51 / AC=1.494; Epoxy=1.50|
|Pencil Hardness:||> 2H|
|UV Resistance: UVA/UVB (900 Kjm^2)||PE Δa= -2.3 Δb=-4.42, P1 Δa=-2.98 Δb=10.27, P3 Δa=1.90 Δb= 3.98|
|Adhesion:||100% on PET 5mil per ASTM D3359|
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A division of Universal Science UK