FIG. 03.01
Optical Windows · Type 03 / 03
Square Windows
Flat, parallel-polished square plates with high transmission and low distortion.
- Part
- Square Window
- Family
- Optical Windows
- Fig.
- 03.03
- Coating
- In-house
- Quality
- ISO 9001
- Made in
- Roorkee
Description
Square windows are flat plates with both faces polished parallel, cut from optical-grade material. The polished faces add very little distortion, and transmission is high across the material’s range. They suit imaging and laser systems and square apertures in instruments.
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. 03.02
Rectangular Windows
Quote for square windows.
Tell us the size, material, coating and quantity, or send a drawing. We reply with a quote.