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Vel-Black®
Low Reflectance Optical Coating

Description: Ultra-low reflectance coating (black velvet applique)

Applications: Stray-light suppression, light traps, space simulation chambers, photodetector calibration, high-emissivity coating

Outstanding Features:
  • Ultra-low reflectance (< 0.5 %) over broad band (UV-VIS-mid IR)
  • Highly diffuse scattering (Lambertian)
  • Robust under normal handling
  • Convenient application (applique)
  • Wide temperature range (cryogenic - 150°C or more)
  • Thickness 0.5 - 2.5 mm (0.020" - 0.100”)
  • Lightweight, Flexible
  • Low outgassing (for vacuum applications)

velblack2.jpg (5163 bytes)

Product Line:

  • Vel-Black® J100C-M2 Standard product
  • Vel-Black® J100Gb Improved flexibility
  • Vel-Black® G100C Improved durability
  • Vel-Black® G125Gb-100B Fibers canted for lower reflectance at normal incidence
  • Vel-Black® G100HT High-temperature All-Carbon Blackbody Plate

Options:
  • PSA Attachment option (indicated by -M2)
  • Direct coating at ESLI for curved or other geometries
  • Custom shapes
  • Available in sizes up to 2’ x 3’ ($1000 minimum order)

Contact us for a complementary sample or for special requirements such as high or low temperatures, high thermal conductivity, thin coatings, nonstandard shapes or sizes, or special attachment requirements.

Contact
Timothy R. Knowles
Energy Science Laboratories, Inc.
(858) 552-2034
Caution: This product consists of numerous small diameter carbon fibers. Some of these fibers can escape as debris which, although not a serious health hazard to humans (classified as an irritant), can potentially cause shorting of electrical equipment, or possibly electrostatically cling to dielectric optics.
 

Download Vel-Black Product Brochure

Download SPIE Article "Optical Characterization of Black Appliques.", Nov 1996. (PDF - 131 k)

Vel-Black is a registered trademark of Energy Science Laboratories, Inc.