FIG. 03.02
Optical Windows · Type 01 / 03
Circular Windows
Round, flat and parallel: protects optics and sensors while passing light.
- Part
- Circular Window
- Family
- Optical Windows
- Fig.
- 03.01
- Coating
- In-house
- Quality
- ISO 9001
- Made in
- Roorkee
Description
A circular window is a flat disc with both faces polished parallel. It seals and protects lenses, sensors and detectors while transmitting light without changing its direction or adding focusing power. Choose the material for your wavelength, from UV fused silica and optical glass to sapphire and IR crystals, and add an AR coating to cut reflection losses.
Specify yours.
Start from a catalogue part or from your own drawing, in the material, coating and tolerance grade you need.
AMaterial
- Optical glass (BK7-class crown, flint)
- Fused silica / fused quartz
- Sapphire
- CaF₂
- BaF₂
- MgF₂
- Silicon (Si)
- Germanium (Ge)
- Zinc sulphide (ZnS)
- Zinc selenide (ZnSe)
- Nd:YAG crystal
- Other UV and IR materials
BCoatingIn-house
- ARAnti-reflection
- Al · AgMetallic mirror
- HRDielectric mirror
- Filter
- Beam-splitter
- Polarizing
CTolerance grade
| Parameter | Commercial | Precision |
|---|---|---|
| Thickness | ±0.1 mm | ±0.01 mm |
| Radius | 1% | 0.5% |
| Refractive index | 0.001 | 0.0001 |
| Abbe (V-number) | 1% | 0.1% |
| Centration | 3 arc-min | 30 arc-sec |
| Tilt / wedge | 1 arc-min | 10 arc-sec |
| Surface irregularity | 1 fringe | λ/4 (0.25 fringe) |
| Surface quality (scratch-dig) | 60-40 | 10-5 |
DMade to your drawing
Send your drawing.
A drawing or a short spec is enough. We quote to it.
- Dimensions and tolerances
- Material and coating
- Surface quality
- Quantity
More optical windows.
FIG. 03.03
Square Windows
Quote for circular windows.
Tell us the size, material, coating and quantity, or send a drawing. We reply with a quote.