Custom Filters

Iridian is dedicated to providing custom filter solutions for a wide range of OEM customers and for many different applications. Our in house design software, multiple fully automated coating platforms and 20 years’ experience allows us to optimize your filter performance and the manufacturing cost for your product.

Iridian applies the extensive knowledge and unique design and process toolset gained from supporting key customers in markets ranging from Telecom, to 3D cinema, and Space when designing your filter solution. With our wide range of in house process capabilities, including specialized high volume inspection and testing systems, environmental test facilities and a Class 1000 clean room for photolithography we support your product development from prototype to production volumes. Our thin film dielectric filters are deposited using energetic sputtering, ensuring a hard durable, environmentally stable coating from the visible to the MWIR (300nm to 10um). The resulting filters also have exceptionally high transmittance levels and blocking, providing the highest signal with the lowest background for your application.

Our solutions offer:

  • High transmission in the bandpass region
  • Accurate center wavelength control and uniformity
  • Low passband IL and ripple
  • Narrow bandpass< <1nm
  • Steep slopes from full transmission to full blocking
  • Blocking >OD6 (60dB)
  • Wide blocking ranges
  • CWL at any wavelength from the UV to the mid IR (~250 nm to 10 µm)


  Some of our capabilities for custom solutions include:


  • Large area filters: up to 250 mm
  • Etalon filters
  • Linear transmission filters (LTF)
  • Tap filters
  • Beam-splitter cubes/prisms (polarizing and non-polarizing)
  • Multizone filters ( MZF)
    • patterned by photolithography
    • assembled from separate optical filter components
  • sputtered SWIR-LWIR (1.6-10 um) optical filters (ARs, beam splitters, edge and bandpass filters)
  • Coating and processing of Si, Ge and sapphire substrates
Contact Us for Your Custom Filters Requirements >