Windows are applied to isolate different physical environments while allowing light to pass through.When selecting windows,it’s impossible to consider materials, transmission, scattering, wave front distortion, parallelism and resistance to certain environment. Dayoptics offer all kinds of windows,which are made from different materials.Windows of special sizes and materials are available upon requirement.Single layer or multiplayer anti-reflecting coatings on optical windows are available upon customers requirement.
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| Specification | BK7 Windows | Fused Silica Windows | Sapphire |
| Diameter Tolerance | +0.0，-0.1mm | +0.0，-0.1mm | +0.0，-0.2mm |
| Thickness Tolerance | +/-0.2mm | +/-0.2mm | +/-0.2mm |
| Clear Aperture | >80% | >80% | >85% |
| Parallelism | 1′（Standard） 10″（High Precision） | 1′（Standard） 10″（High Precision | 1′ |
| Surface Quality | 60/40（Standard） 20/10（High Precision | 60/40（Standard） | 60/40（Standard） |
Wavefront Distortion | λ/ 4(Standard) λ/10（High Precision）per 25mm@633nm | λ/ 4(Standard) λ/10（High Precision）per 25mm@633nm |
|
| Bevel | 0.25mm*45° | 0.25mm*45° | 0.25mm*45° |
| Coating | Uncoated | Uncoated | Uncoated |
BK7 Windows
| Part No. | Diameter(mm) | Thickness(mm) |
| WIN0101 | 10.0 | 3.0 |
| WIN0102 | 12.7 | 3.0 |
| WIN0103 | 25.4 | 3.0 |
| WIN0104 | 10.0 | 6.35 |
| WIN0105 | 12.7 | 6.35 |
| WIN0106 | 25.4 | 6.35 |
Fused Silica Windows
| Part No. | Diameter(mm) | Thickness(mm) |
| WIN0201 | 10.0 | 3.0 |
| WIN0202 | 12.7 | 3.0 |
| WIN0203 | 25.4 | 3.0 |
| WIN0204 | 10.0 | 6.35 |
| WIN0205 | 12.7 | 6.35 |
| WIN0206 | 25.4 | 6.35 |
Sapphire Windows
| Part No. | Diameter(mm) | Thickness(mm) |
| WIN0301 | 5.5 | 0.5 |
| WIN0302 | 8.5 | 0.5 |
| WIN0303 | 9.5 | 0.5 |
| WIN0304 | 10 | 1 |
| WIN0305 | 12.7 | 1 |
| WIN0306 | 25.4 | 1 |
