Products
Standard and custom stepped windows
ARD-Optics manufactures stepped windows of different shapes, from simple round to complex configurations, to the customer's request: round, oval, rectangular, and mixed.
We also manufacture sapphire windows with side-step polishing and a conical side-step surface.
On request, windows can also be made from other optical materials, with a high degree of plane-parallelism.
Materials available:
Sapphire, Fused silica (KU-1, UV-grade), KI (IR-grade), BK-7 glass, Si, Ge, ZnS, ZnSe, MgF₂, BaF₂, BBO, Zerodur, Pyrex.
Typical applications:
- Deep-sea underwater vehicles and high-pressure viewports
- Industrial and scientific laser systems
- Vacuum chamber viewports
- Aerospace and defense optical systems
- Semiconductor and microelectronics equipment
- Medical and diagnostic devices
- Optical sensors and measurement instruments
Stepped Windows — Specifications
| Sapphire | Quartz glass & other optical materials | |
|---|---|---|
| Flatness | Up to λ/8 | Up to λ/8 |
| Surface quality S/D MIL-13830 | 20/10 | 20/10 |
| Step surface | Polished / Ground | Polished / Ground |
| Side surface | Polished / Ground | Polished / Ground |
| Step width | 0.5-300 mm | 0.5-300 mm |
| Radius of rounding at inner angle of step | Up to 0.2 mm | Up to 0.2 mm |
| Parallelism | Up to 10 arc sec. | Up to 10 arc sec. |