BLACK COATINGS

POUR L'ESPACE, L'INDUSTRIE, L'ASTRONOMIE ET LA RECHERCHE

 

 

CILAS offers black coatings to mitigate straylight issues in optical systems for any spectral range between 380nm to 2.5µm, such as camera objectives, but also mechanical slits for optical diffraction purpose.

Thanks to the dense manufacturing technology, CILAS black coatings withstand severe environment conditions, for industry, scientific and space programs.

All these coatings are suitable for glasses, Zerodur®, SiC, titanium, stainless steel and various aluminum types on components up to 2 meters by 2 meters.

Catalog coatings and specific designs available upon request.

Main references:

  • TROPOMI
  • Eyesat
  • METimage
  • Sentinel-5
FEATURES OF BLACK COATINGS
SUBSTRATE MATERIALS Silica, Zerodur®, Titanium, Aluminum + NiP, Bare aluminum, Stainless steel, SiC,
CFRP, etc.
SUBSTRATES SHAPES AND DIMENSIONS Applicable to a wide range of components and shapes: slits, windows, prims,
stripe filters, baffles, barrels, etc.
Up to diameter 2000 mm, 20 mm height
COATING TYPE Metal-dielectric multilayer coating
COATING PROCESS Magnetron sputtering (dense coating)
900 m² of clean room ISO5 to ISO8
COATING THICKNESS < 1 μm
SPECULAR REFLECTIVITY R < 1% over [400-900 nm] for AOI 0-30°
Other spectral ranges upon request
HEMISPHERIC REFLECTIVITY R < 1.6%
TRANSMITTANCE T < 10-5
THERMAL VACUUM Qualified over [-165°C, 130°C]
COSMETICS 5/C 1 x 0.16 per 100 mm pupil according to ISO 10110-7
ENVIRONMENTAL COMPATIBILITY Suitable for severe environments (ATOX, radiations, vacuum, humidity…)
Space heritage available upon request
Cleanable
CONTACT AREAS OR NON-USEFUL AREAS Coating free areas masked mechanically or using photolithography techniques