The light transmission of an EMI shielded window is determined by the following factors:
EmiClare mesh provides brighter image quality through higher mesh transmittance.
The following chart gives a guide of the light transmittance (T%) of the common substrates.
|Plain "float" glass||90-92%|
* Varies with thickness due to internal dispersion and may also vary between suppliers.
The following table quantifies the effect of the common surface finishes on optical transmittance.
|Surface Finish||Reduction in T%|
|Non Glare coatings 60-70 gloss||2-3%|
|Non Glare coatings 80-90||gloss 1%|
|Clear hard coats||<1%|
|MLAR coatings on glass||<1%|
|ITO coatings 12-15 ohms/square||5-10%|
By design EmiClare windows deliver improved optical performance.
|A:||Laminate with 0.75mm Non-Glare and clear Hard Coated polycarbonate.|
|B:||Laminate with 1.2mm glass. Plain finish to both surfaces.|
|C:||Laminate with 1.5mm Non-Glare and plain polycarbonate.|
|D:||Laminate with 1.2mm (MLAR) glass and 1.2mm plain glass.|