Windows
Windows are used to allow optical radiation to pass from one environment to another without allowing other components of these environments to mix. The environments may vary widely in temperature, pressure, chemical composition, phase or cleanliness. The criteria used to select the appropriate windows may include wavelength transmission, scattering, wavefront distortion and resistance to certain environments. WITOPTICS windows are available in a wide range of sizes and materials including BK7, CaF2, Fused Silica and Sapphire.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | BK7, CaF2, Fused Silica and Sapphire |
| Typical Diameter Φ | 8.0 mm, 10.0 mm, 12.7 mm, 15.0 mm, 20.0 mm, 25.4 mm, 30.0 mm |
| Typical Thickness | 1.0 mm, 2.0 mm, 3.0 mm, 4.0 mm |
| Diameter Tolerance [General] | +0.0/-0.1 mm (general) |
| Diameter Tolerance [High Precision] | +0.0/-0.05 mm (high precision) |
| Thickness Tolerance [General] | ±0.1 mm (general) |
| Thickness Tolerance [High Precision] | ±0.01 mm (high precision) |
| Clear Aperture [Small Size] | >80 % (small size) |
| Clear Aperture [Large Size] | >90 % (large size) |
| Parallelism [General] | 3 min. (general) |
| Parallelism [High Precision] | 3 sec. (high precision) |
| Surface Quality [General] | 60/40 (general) |
| Surface Quality [High Precision] | 10/5 (high precision) |
| Flatness [per 25mm@633nm；General] | λ/4 (general) |
| Flatness [per 25mm@633nm；High Precision] | λ/10 (high precision) |
| Bevel (face width x 45⁰) | <0.25 mm |
| Coating | Uncoated, AR, HR, PR Coating, etc. |
Datasheet
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Supplier Information
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