Optical Thin Film Coatings

OL supplies high reflectance coatings, optical interference filters, cut-off; band-pass filters beam splitters etc. For over a decade OL’s coatings have been in prominent use in the Space Sciences, Semi-conductors, Laser and Fiber Optics field.

  • Anti-Reflection Coating (UV, VIS, NIR, IR)

    • Single layer Anti reflective coatings (SAR),
    Multilayer Antireflective coatings (VAR),
    Multilayer Broad Band Antireflective coating,
    Dual wavelength Band Antireflective coatings in the UV, VIS, NIR and IR regions.

  • Metallic High Reflection Coatings

    • Standard metallic coatings like Aluminum, Silver, Gold, Copper, Inconel etc,

  • Beam Splitters

    • Plate and Cube Beam splitter coating

  • Cold Mirrors

    • This coating separates heat from light.The cool visible light is reflected and the heat is transmitted.

  • Hot Mirrors

    • This coating separates heat from light by transmitting cool visible light and reflecting the heat.

  • Band Pass Filters

    • Broad Band Interference filters (VIS,NIR)FWHM 50nm -100nm
    Narrow Band interference filters (UV,VIS,NIR) FWHM 8nm

  • Edge Filters

    • IR Cut off coating
    Visible Cut coating

  • Neutral Density Filters

    • These filters make possible the attenuation, comparison, splitting or combining of beams in a wide range of ratios with no significant dependence on wavelength

  • Rejection Filters

    • Blocks specific wavelength and transmits side bands

  • Laser Mirrors

    • The Broad band dielectric hard coating( VIS,NIR) is designed to be used in solid state and excimer and gas lasers.

  • Polarizers

    • Cube and sheet polarizers for photometric instruments and photography applications.