| Material | CaF2 |
| Shape | Round Window, Brewster Window, Anamorphic Window, Stepped window et al. |
| Dimension Tolerance | +0.0/-0.2mm |
| Thickness Tolerance | ±0.2mm |
| Clear Aperture | >90% |
| Parallelism | Standard: 1 arc min High Precision: 10 arc sec |
| Surface Flatness | λ/40 – λ/8 |
| Surface Quality | Standard: 80/50 High Precision: 40/20 |
| Wavefront Distortion | Standard: λ@633nm per 25mm High Precision: λ/4@633nm per 25mm |
| Chamfer | Protected <0.5mm×45° |
| Coating | AR or custmer design |
| Standard | Precision | ||||
| Part No. | ø(mm) | T(mm) | Part No. | ø(mm) | T(mm) |
| WIN3010 | 10.00 | 3.00 | WIN3110 | 10.00 | 6.00 |
| WIN3012 | 12.70 | 3.00 | WIN3112 | 12.70 | 6.00 |
| WIN3015 | 15.00 | 3.00 | WIN3115 | 15.00 | 6.00 |
| WIN3020 | 20.00 | 3.00 | WIN3120 | 20.00 | 6.00 |
| WIN3025 | 25.40 | 3.00 | WIN3125 | 25.40 | 6.35 |
| WIN3030 | 30.00 | 3.00 | WIN3130 | 30.00 | 6.35 |
| WIN3050 | 50.80 | 6.35 | WIN3150 | 50.80 | 10.00 |
| Other material or size are also available upon request. |
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