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Custom Optical Coatings

Overview about our types of thin film coatings

In addition to our standard thin film components, we offer custom optical thin film coated quality products and coated precision optics with a high optical performance, according to your exacting specifications. The following overview presents our general coating capabilities. Please follow one of the links to our coating inquiry form to conveniently specify the characteristics of your special custom coatings.

Customized metallic & dielectric mirror coatings

Characteristic reflection curve

Optical coating with mainly reflecting properties and high imaging quality. This can be all dielectric or metallic, like aluminium, enhanced aluminium, silver, enhanced silver, gold, chrome, copper, rhodium or platinum. The reflection, angles of incidence, polarization and most other properties can be adjusted according to your specification. In addition to our standard mirror components you can use our custom optics enquiry form to conveniently get a quotation for your customized high performance mirror.



Customized beam splitter coatings &
partially transmitting optics

Characteristic beam splitter curve

Optical coating used for neutral splitting of light or laser radiation or for defined damping of a light source. Beamsplitters can either be based on dielectric or metallic coating systems. The splitting ratio can be adjusted to customer’s specification by modifying the dielectric layers or layer the thickness. The backside can be antireflection coated to minimize unwanted secondary reflection and to prevent energy loss at the backside of the beam splitter. In addition to our stock beam splitter coatings, you can use our custom optical thin films quotation form to conveniently get a quote for your customized beam splitter. Also special designs for laser applications are available.



Customized single- & multilayer antireflection coatings

Characteristic transmission curve

Coated optics design that minimize or eliminate unwanted reflection and ghost images which can occur from uncoated glass surfaces. The optical design can be optimized for single wavelengths or for a wide wavelength range (broadband coating). The usable transmitted light is almost increased by the same amount the rest reflection is decreased. In addition to our off-the-shelf antireflection coating you can use the coating inquiry form to conveniently get a quote for your customized high quality anti-reflective thin film design.



Customized cold mirror coatings

Long pass filters, cool light reflectors

Dielectric optical coating with a high reflection performance in the visible range and good transmittance in the infrared range. A cold mirror is mainly used to efficiently filter out heat or IR-radiation from a lamp or a optical system. The cut-on and cut-off wavelengths and the range of reflection can be shifted or modified according to customer‘s specific requirements. In addition to our standard cold mirror you can use the coating enquiry form to conveniently get a price for your custom made optics.

Customized heat reflecting hot mirror &
heat protecting filter coatings

Short pass filter, infrared reflecting, characteristic curve

Dielectric optical filter devices with high transmission in the visible and high reflection in the infrared are predominantly used to block heat or IR-radiation. These filter coatings can also be used as transparent reflectors in the infrared spectrum such as near infrared laser diodes. The cut-off wavelength, transmission and reflection ranges of the filters can be customized. In addition to our standard hot mirror you can use the coating request form to conveniently get a price quote for your custom hot mirror.



Custom made electrically conductive
and optically transparent ITO-coatings

Indium-Tin-Oxide conductive coatings

Electrically conductive thin film coating with good transmittance in the visible and with a defined electrical sheet resistance. The sheet resistance and the transmission depend on the film thickness and can be customized. Sheet resistances can be in the range of 5Ω/sq. up to 10kΩ/sq. The backside can be anti-reflective coated to reduce secondary reflections. ITO-films with a low surface resistivity can be used as infrared reflector optics. In addition to our standard ITO-coated materials you can use the coating enquiry form to conveniently get a quotation for your customized ITO-coated material.



Other optical coatings

We are not limited to the optical coating capabilities described before. In addition to the coatings listed, the following thin film components can be manufactured according to customer-specific specification:

  • Dichroic precision beam splitter coatings
  • Color filters
  • Conversion filters
  • Dichroic Color filters
  • RGB-filter sets
  • Coatings for ultraviolet applications
  • Bandpass filters
  • Shortpass filters
  • Longpass filters

In case you want a quotation for your custom coated thin film component, please just let us know your requirements. To process your inquiry as quickly as possible, we will need the following specifications and information:

  • Desired Transmission(s)- and Reflection(s) given in %
  • Specification of the wavelength ranges in nm
  • Angle on incidence
  • Desired substrate material, dimensions and required mechanical precision
  • Temperature requirements and other specifications that are relevant for your application
  • Required quantity

If you have any further questions or if you need assistance in designing your custom optical coating systems for special applications, please do not hesitate to contact us.