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Ultra-Absorbing Black Coating

Photonics Spectra
Oct 2012
Acktar Ltd.Request Info
KIRYAT Gat, Israel, Aug. 2, 2012 — Acktar Advanced Coatings has announced completion of preparations for industrial-scale production of foils coated with its Metal Velvet ultra-absorbing black coating for use from the extreme-UV through the far-IR. The light-blocking material can now be obtained in running-meters.

With specular absorbance as high as 99.99% and wide-band performance, the Metal Velvet-coated light-absorbing foil is a stray- and scattered-light-absorbing/suppressing material available to optical engineers.

The coated foil can be supplied with or without self-adhesive backing and either in roll or cut-sheet formats. Pre-cut pre-forms can be prepared for high-volume applications.

Metal Velvet is a black inorganic material with a total hemispherical reflectance <1% across the extreme-UV to the far-IR range. The high-emissivity coating features ultrahigh-vacuum compatibility, low outgassing and high thermal stability at temperatures from 4 to 623 K, which makes it suitable for terrestrial, airborne and satellite-borne optical systems. Examples are telescope housings and baffles; light and cold shields for IR detectors; optical packaging; laser systems; inspection systems; medical devices; instrumentation; and passive thermal management.

The coating’s high damage threshold is critical in the laser industry and in UV optics for the semiconductor industry. The coated foil is easily applied by the end user to virtually any surface, including metals, glass, ceramics and polymers. The foil comprises four layers: a release liner, an optional adhesive layer, a metal foil substrate coated with a thin black layer, and a removable surface protection film. The adhesive and foil substrates are available in various options to suit application requirements.

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