RFI Clearshield Optical Filters - Zytronic - #1

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RFI Clearshield™ Optical Filters

CLEARSHIELD Filters are custom designed flat or curved RFI Shielded Optical Filters produced by depositing a thin electrically conductive transparent coating directly onto the substrate material. The transparent conductive coating provides high shielding performance coupled with good light transmission properties.

Laminated CLEARSHIELD Filters are available with a wide range of surface finishes including etches, anti-reflection and non-glare coatings and can incorporate polarizers, for contrast enhancement and coloured filters to match optical requirements.

Advantages of CLEARSHIELD Optical Filters:

• High conductivity coatings resulting in attenuation of 18to 35dB over the freguency range IMHzto 1GHz

• Light transmission, typically 87% for 3mm thick coated glass

• Available as fully laminated flat or curved

• Window materials consist of glass and polycarbonate substrates

EMI Shielding Performance

The Shielding Effectiveness of CLEARSHIELD filters has been measured by independent test methods consistent with MIL-STD-285. Typical Shielding Effectiveness is shown in the table.

Spectral Performance

Optical transmission, averaged over the visible range of 400 to 700nm at 0° angle of incidence are shown in the table.

EMI Shielding Performance of CLEARSHIELD Filters

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