Import Anti-Reflection Filters — Buy in Bulk from Supplier in Taiwan

The anti-reflection filters from Etafilm Technology Inc. are precision optical components designed to minimise surface glare and improve light transmission in imaging systems. These filters utilise multi-layer dielectric coatings, typically applied via physical vapour deposition, to achieve reflection reductions below 0.5% per surface across visible and near-infrared spectra. The base substrate is usually optical glass such as BK7 or fused silica, selected for its low dispersion and high transmittance.

Standard coatings include magnesium fluoride or aluminium oxide layers, with thicknesses tuned to quarter-wave intervals for target wavelengths. The filters are available in circular or rectangular formats, with typical diameters ranging from 25 mm to 150 mm and thicknesses of 1-3 mm. Surface flatness is often specified to λ/10 or better at 632.8 nm, a common standard for laser and imaging applications. Environmental durability is enhanced with scratch-resistant top layers, though this may slightly reduce transmission efficiency.

These filters are widely used in digital cameras, machine vision systems, and medical imaging devices where stray reflections degrade image contrast. Etafilm Technology Inc. offers customisation for specific wavelength ranges, such as UV or IR, but buyers must confirm substrate compatibility and coating specifications. Packaging typically includes individual protective cases to prevent surface contamination, with bulk orders shipped in foam-lined cartons.

Etafilm Technology Inc. is headquartered in Taoyuan, Taiwan, with its address listed in Jhongli District, a region recognised for its optical and electronics manufacturing industries. The company holds an imported trust tier, indicating it sources or produces components for international markets. Its profile shows no recorded response activity, so buyers should expect to initiate contact for technical details.

The supplier focuses on optical filters and coatings, catering to industries like photography, machine vision, and industrial inspection. While the listing does not provide certifications, production capabilities, or client references, its product specifications align with standard optical industry practices. Buyers are encouraged to request coating curves and substrate certifications to validate performance claims.