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Technological Capabilities

Coating types

Highly reflective
Anti-reflective
Partially reflective
Wavelength separating
Broadband coatings
Polarizing coatings

Available Coating Technologies

Magnetron Sputtering

Magnetron Sputtering

PROS:

  • Big load volumes – the best solution for mass production
  • Unit price is lower than IBS coated element
  • Most of the coating properties are identical to IBS properties – very low scattering and absorption losses, almost bulk-like layer density, excellent environmental stability, very high spectral accuracy, high LIDT in VIS, IR range
  • Stress is lower than in IBS coatings
  • Excellent solution for custom shape and size substrates

CONS:

  • Expensive for small volumes
  • No UV capabilities at the moment, technology under development

Ion Beam Sputtering

Ion Beam Sputtering

PROS:

  • Very high spectral coating accuracy
  • Lowest scattering and absorption losses
  • Highest LIDT in VIS – IR range
  • Excellent stability and performance in harsh environments (space, defense applications)
  • Stress-controlled by complementary processes

CONS:

  • Expensive

Ion Assisted Deposition

Ion Assisted Deposition

PROS:

  • IAD or PIAD option available
  • Almost no sensitivity to temperature and humidity
  • Low stress coatings (controlled by the source parameters)
  • Stress-controlled cost-performance ratio

CONS:

  • Smaller variety of coating materials available

Electron Beam Evaporation

Electron Beam Evaporation

PROS:

  • Wide spectral range – from MUV to IR
  • High deposition rates
  • Low stress coatings
  • Good cost-performance ratio

CONS:

  • Sensitive to humidity and temperature of the environment
Magnetron Sputtering Ion Beam Sputtering Electron Beam Evaporation Ion Assisted Deposition
Spectral ranges VIS - NIR MUV - MID IR DUV - MID IR MUV - MID IR
Price* 2 3 1 1
Capacity 1"** 518 53 90 90
Density Near bulk Near bulk Porous Dense
Aging effects No No Yes No
Environmental resistance High High Low Mid
Maximum reflectivity >99.9% >99.99% >99.5% >99.8%
Minimum reflectivity <0.1% <0.1% <0.25% <0.2%
Extinction ratio 1:1000 1:1000 1:200 1:200

* On a scale from 1 to 3. “1” marks price as low.

** Maximum capacity varies depending on required spectral specifications.

Spectral performance

Optomechanical Assembling

Altechna has opened a new chapter in its optical manufacturing journey: with an increase in demand for optomechanical and optical assemblies, the company is strengthening and expanding its service by introducing a new line – bespoke assemblies and sub-assemblies based on customers’ designs:

  • Optical parts: prisms, waveplates, lenses, and other glass parts optically contacted or cemented together
  • Optomechanical parts: optics mounted on various types of metal mounts and housings, either fixed or shifting

Type of work offered

Altechna offers a variety of assembly and manufacturing solutions. Starting with exact build-to-print projects based on customer instructions, and ending with fully custom-designed solutions, these are tailored to fit the specific end-user needs.

 

Any work is accompanied by:

  • Rapid reviews of project needs by a dedicated engineering team
  • A design-to-cost mentality
  • A clear information flow, strict deadlines, and full customer involvement
  • Quality control pre- and post-manufacturing, all carried out in-house
  • Full traceability of each manufacturing stage

Our goal is to provide a service whereby we can help the end-user to gain the following additional benefits:

  • Time and resource savings: the complex, multi-stage processes required to build optomechanical sub-assemblies demand a large amount of internal resources and time
  • Simplicity: the pre-built, aligned, and clean-room-packed modules can be immediately incorporated into the systems of users
  • Increased yield: reducing customer headaches from damages caused to precision optics when being built into assemblies
  • Space-saving: with goods coming from Altechna, a company‘s own clean-room areas and manufacturing lines can be reallocated to other projects
  • Cost savings: a skilled team of technical experts is ready to help with your needs for the most competitive price on the market

ISO 7 Cleanroom Working areas

In recent years, Altechna has strengthened by investing in areas of manufacturing including a newly built clean-room area,
and new manufacturing equipment and team members.

Currently we offer:

  • A 21 m² ISO 7 clean room working area, including active particle monitoring with relative humidity
    and temperature controls
  • A choice of various acrylic-based and epoxy adhesives
  • Vacuum outgassing oven, with temperatures up to 110 °C and <0.5 mbar
  • Dedicated four-stage ultrasonic cleaning plant that provides spot-free zero-residue results
  • Custom measurement-system set-ups based on the final application, replicating the customer’s
    system and requirements to test the goods

Experienced Teams

With dedicated engineering, quality-control, and manufacturing teams, we achieve the lowest possible product-return rate.

This is guaranteed by:

  • Excellent tooling design, assembly processes and quality control all carried out
    in-house by experienced teams
  • Experience working with a wide variety of metal, glass, and plastic materials
  • Strong emphasis on customer support to identify critical aspects of projects