Products
Flat Optics
Flat optical windows, mirrors and filters for visible and infrared bands. End-to-end production including precision grinding, single- and double-side polishing, coating and final inspection.
Windows, mirrors, wedges, prisms, filter substrates and master flats for the visible and infrared bands. Made on single- and double-side grinding and polishing lines up to ⌀ 500 mm to ISO 10110 tolerances; every part is verified interferometrically and can be coated in the same plant.
Specifications
- Diameter up to ⌀ 500 mm
- Sub-micron total thickness variation (TTV)
- Nanometre-level surface roughness
- Hard: sapphire, SiC, Si, YAG · Soft IR: Ge, ZnS, ZnSe, CaF₂, MgF₂ · Glass-ceramic: N-BK7, fused silica, Zerodur
- ISO 10110 drawing and tolerance notation
- Per-part verification on an 18-inch interferometer
Where it is used
- Electro-optical system windows and debris shields
- Laser and infrared mirrors, steering mirrors
- Lithography and metrology reference flats
- Filter and beam-splitter substrates
Capabilities behind it
- Single-Side PolishingPrecision single-side polishing of optical surfaces; flatness and surface quality verified by measurement.
- Double-Side PolishingSimultaneous polishing of both faces for optical windows where parallelism and thickness tolerance are critical.
- Metrology & InspectionInterferometric surface measurement and dimensional inspection; documented control at every production stage.
Frequently asked questions
Which materials do you make flat optics from?
Hard materials (sapphire, SiC, silicon, YAG), soft infrared materials (Ge, ZnS, ZnSe, CaF₂, MgF₂) and glass-ceramics (N-BK7, fused silica, Zerodur), each with its own polishing recipe.
What are the maximum diameter and tolerances?
Up to ⌀ 500 mm, to ISO 10110 tolerances, with sub-micron total thickness variation (TTV) and nanometre-level roughness. Every part is verified interferometrically.
Have a drawing for this process?
Send your technical drawing or 3D CAD model through our secure channel. Our engineering team replies with a quotation against the specification.