石英鍍膜圓形窗口
相比於N-BK7，UV熔融石英窗具有低失真，優異的平行度，低體積散射和精細的表面質量，對於給定波長還提供較低的折射率。
• 根據不同波段需求選擇型號
• 鍍膜特性：R<0.25%，0度入射
| Specifications | |
| Material | BK7 Grade A, UV Grade Fused Silica |
| Dimension Tolerance | +0.0/-0.2mm |
| Thickness Tolerance | ±0.2mm |
| Clear Aperture | >90% |
| Parallelism | <30 arc seconds |
| Surface Quality | 60/40 |
| Wavefront Distortion | <λ/8@633nm per 25mm |
| Chamfer | Protected <0.5mmx45deg |
| Coating | R<0.25% per suface, AOI=0deg |
| Damage Threshold | BK7: >5J/cm2, 20ns, 20Hz, @1064nm |
| UVFS: >10J/cm2, 20ns, 20Hz, @1064nm | |
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