Services

Our specialty is growing and machining of synthetical sapphire:We grow sapphire in optical quality (Czochralski method). We also offer special growth techniques for UV-range (ca. 200 nm) with low fluorescence.We even offer sapphire which is practical dispersion-free.

  • Saphir-Boules
  • Discs, plates, rods: sawn or fine ground

 

  • Windows (diameter max. 300mm)
  • Square plates
  • Lenses
  • Micro lenses
  • Spheres
  • Domes
  • Multi-layer glass
  • Prisms
  • Tubes, capillary, rods
  • Substrates / Wafers
  • Sawing
  • Milling
  • Drilling
  • Ultrasonic machining
  • Grinding
  • Centering
  • Lapping
  • Polishing
  • Matting
  • Merging
  • AR coating
  • Mirrors
  • Surface metallization
  • Annealing
  • Sapphire
  • Ruby
  • YAG
  • Quartz
  • BK7
  • Pyrex
  • Silicon 
  • Calcium Fluoride
  • Magnesium Fluoride
  • Zinc Selenide
  • Germanium
  • Alumina
  • Zirkonium Oxide

Standard-TolerancesBest Tolerances
Shape tolerances:
< 5 mm: +/- 0,05 mm
> 5 mm +/- 0,1 mm
Shape tolerances:
+/- 0,01 mm and better
Finish surface quality:
max 3 Rauten according to DIN 3140
or max Ra 0,1µ
or 5/3×0,25 according to DIN 3140 (scratch dig 80-50)
Finish surface quality:
max 4 Rauten according to DIN 3140
or max Ra 0,01µ
or 5/4×0,025 according to DIN 3140 (scratch dig 10-5)
Paralellism: < 1 arcminParallelism: < 10 arcmin
Planarity: 2 Lambda at 633 nm / 25 mm-rangePlanarity: Lambda/10 at 633 nm / 25 mm-range
Orientation: every orientation
with tolerance of max +/- 3°
Orientation: every orientation
with tolerances of max +/- 1°
Chamfer: 0,2-0,3 mm/45°
(otherwise chips until 0,2 mm)
Chamfer: 0,05 mm/45°
(sharp edges)

The quality of our products is constantly monitored during the process of manufacturing.

We use the following technology:

  • Autocollimator (Logitech)
  • X-Ray Spectrometer
  • Roughness test aparatus (Mahr, Homel)
  • Profile test aparatus (Mahr, Homel)
  • Microscopes (Zeiss, Leitz)
  • Digital Microscope (Keyence)
  • and many more…

If desired, we deliver test certificates along with the order

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