Multi-Band Thin Film Coatings

Thin Film Coatings

Thin film coatings are extremely thin layers of materials (such as TiO2, SiO2, MgF2, gold, aluminum etc…), which can be applied to the surface of a substrate like glass, metal or germanium, to effect a change in its optical properties. Effects such as reflection, refraction, anti reflection and conductivity can be produced and modified by expert calibration of the number of layers and the respective thicknesses of the thin film coatings in relation to the incidental wavelengths of light.

Multi-Band Thin Film Coatings

Reynard  Corporation is a leading global supplier of optical components to the  aerospace, commercial and military markets, and a leader in Thin Film  Coating technology. In addition to engineering thin film coatings that  function in the Visible, Infrared and Ultraviolet bands, Reynard Corp.  can engineer and apply Multi-Band thin film coatings. Multi-Band thin  film coatings can either be applied to the high-quality optical  components and substrates that Reynard also supplies, or to  customer-provided substrates.

Multi-Band Thin Film Coating Applications

Multi-Band thin film coatings are useful in the creation of optical filters for any application where it is important to have the ability to filter separate bands simultaneously, or at different process stages. The analysis of fluorescently-labeled proteins in the biotechnology field is one example where Multi-Band filters are being used effectively. Multi-Band anti reflection (AR) filters are useful in any system where varying wavelengths need to be transmitted with minimal loss of energy.

Multi-Band Thin Film Coating Process

Our thin film coating facility has 21 vacuum chambers, ranging from an 18” bell jar to a 54” fully automatic box coater, all in a 4000 square foot Class 1000 clean room. Processes include electron beam, ion assisted and resistance source deposition. We have the capability to coat virtually any size and shape up to and including substrates 50” in diameter.

Available substrates include:

• Alon
• BK-7 (borosilicate crown glass)
• Calcium Fluoride (CaF2)
• Fused Silica
• Germanium (GE)
• KRS5 ( Thallium Bromo-Iodide)
• Sapphire
• Magnesium Fluoride (MgF2)
• Silicon (Si)
• Zinc Selenide (ZnSe)
• Zinc Sulfide (ZnS)
• Or as provided by the customer.

Coating materials include:

• Copper (Cu)
• Gold
• Hafnium Oxide (HfO2)
• ITO (Indium Tin Oxide)
• Magnesium Oxide (MgO)
• Nickel (Ni)
• Silicon Monoxide (SiO)
• Silver
• Titanium Dioxide (TiO2)
• Tantalum Oxide (Ta2O5)
• Zirconium Oxide (ZrO2)
• And many more…

Custom Coating Services

At  Reynard, over 80% of our business is custom. Our Multi-Band thin film  coatings can be engineered and customized for your particular  application, and in addition we have one of the largest and most  comprehensive selection of standard and stock precision optical  components in the world. Reynard Corporation is the leading global  supplier of optical components to the aerospace, commercial and  military markets. We take pride in meeting and exceeding our customers’  expectations in concept, design, engineering and fabrication.

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Reynard Corporation operates per Military Specification Mil-I-45208A.