SwissOptic 3D measurement system

Coatings & Microstructures. Application-Specific Surfaces.

We produce superior coatings for various applications. The spectral range runs from UV (190 nm) into the infrared range (5 µm; up to 12 µm for metal mirrors).

With our modern coating technologies (PVD with and without ion-assistance), we have extensive coating capacity with in-situ monitoring technologies (oscillating quartz and optical broadband monitoring) in order to provide you with specific solutions. The most modern measurement and testing techniques allow us to analyze even very demanding specifications.

Our coating services include

  • Coatings on typical optical glass as well as quartz, sapphire, CaFl2, Si, Ge, ZnS
  • Formats from diameters of 3 mm upwards, planar components up to 400 mm in length
  • Also, glass fibers, cemented substrates, crystals
  • Spectral range of 190 – 5,000 nm, mirrors from 190 nm – 12 µm
  • Conductive coatings (ITO), anti-glare absorption layers (e. g. black chrome, chrome-free as well)
  • High laser damage thresholds (LIDT)
  • Strict coating tolerances
  • ROHS compliant

In addition, we design and manufacture micro-structured optical components according to your wishes.

Through the use of various lithographic processes (lift off, etching processes, contact prints, proximity copies, imaging copies), we are able to find the perfect solution for optical masks, apertures, reticles and calibration plates.

More information on our coating development services is available under

Coating Design

Areas of appli­cation

Our products are currently used in the following fields

  • Apertures for endoscopes and other optical devices
  • Measuring solids in measurement and testing techniques
  • Reticles with crosshairs and similar structures used in telescopic sights or for optical measurement and analysis devices
  • Optical calibration standards for measurement machines with optical scanning
  • Resolution tests for microscopes and lenses



Substrate types Optical glass, colored glass, quartz, sapphire, semiconductor materials, glass fibers, crystals (laser resonators)
Spectral range AR: 190 to 5,000 nm, mirrors: 190 to 12,000 nm
Structuring Up to 1 μm possible with an accuracy of 0.2 μm depending on the structure design


Metro­logy / QS

  • Various spectrophotometers for reflection & transmission (190-3,000 nm), optical density and polarization
  • Environmental/climate tests according to ISO and MIL (heat, moisture, autoclaving)
  • Abrasion and adhesive tests
  • Surface measurement technology (tensiometers)
  • Various tests with regards to chemical resistance
  • 4-point resistance measurement technology for conductive layers

Anti­reflective layers (AR)

Poorly reflective coatings of 190 nm to 6 µm

  • AR broadband (Rabs 400-1,100 nm < 1 %)
  • AR with low reflectivity (Rabs @ λ < 0.1 %)
  • Laser damage resistant coatings (pw & cw applications)
  • Multi-incidence angles (0-45° typical, 0-85° possible)
Anti-reflection coatings

Antireflection coatings

Transmission measurement 193 nm

Transmission testing of 193 nm

Filter layers

  • Single band filter/laser protection filter
  • Multi band filters
  • Edge filters
  • Line filters
  • Narrow band filters
  • Graduated filters

Polar­izing and non-polar­izing beam splitting coatings

  • Chromatic beam splitters
  • Intensity beam splitters
  • Polarizing and non-polarizing beam splitters > TS/TP extinction ratio up 1000/1
  • Cemented beam splitters and beam splitters with defined air gap cementing

Mirror coatings

Highly reflecting metallic and dichroitic mirror coatings 120 nm to 12 µm

  • Boosted dielectric and metallic mirrors
  • Broadband mirrors (Rabs 400-1,000 nm > 98 %)
  • High reflectivities (Rabs @ λ > 99.5 %)
  • Multi-incidence angle (0-45° typical, 0-60° possible)
  • Mirror coatings for laser applications (20 J/cm2)
  • Front and rear surface mirrors
  • Stress-optimized coating designs
Shaped lenses with metal mirror

Formed lenses with metal mirrors

Thin film coating of dichroitic mirror

Dichroitic mirror coating

Ab­sorp­tion layers (LRC/HRC)

  • Absorption layers with low reflection (black chrome)
  • High optical densities up to OD7
  • Narrow and broadband coatings
Micro-structured coatings

Microstructured chrome coatings

APS system for ambitious coatings

APS system

Trans­parent and electri­cally conduc­tive layers (ITO)

Manufacturing of conductive (adjustable resistance) ITO coatings, however highly transparent in the visible range (e. g. to heat front surfaces for optical systems susceptible to condensation, or as transparent electrodes)

Retroreflector with ITO coating

Retroreflector with ITO coating


Lithographically structured, arbitrary coatings in the µm range allow for new applications in high-end imaging opto-electronic systems with simultaneous, specific spectral sensitivities.

  • Tessellation and line filters
  • Filters with various structured geometries
  • Color-coded systems (not just black and white)
  • Colored reticles
  • Colored gradient filters
  • Color filters

For additional technical details about the options for microstructuring, please see the data sheet

Microstructures & Finishing Technologies

Inspection of a structured coating

Testing for a structured coating

Microstructured coatings

Microstructured coatings

Micro-structured coatings

Microstructured chrome coatings

Optical calibration plate

Optical calibration standards

Finish­ing techniques

  • Plug/screen printing
  • Edge/spray painting
  • Optically dense finishes

Contact our specialists

Please choose your contact partner:

刘华南 (Steve Liu)
Phone +86 27 8792 8576
陈瑞 (Tommy Chen)
Phone +86 27 59311585



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