n-bk7 窗片
| 属性 | 规范参数 |
| 标准直径(φmm) | 10.0, 12.7, 15.0, 20.0, 25.4, 30.0, 38.1, 50.8 |
| 标准厚度 (mm) | 2.0, 3.0, 6.0, 6.35 |
| 直径公差 (mm) | 0.0/-0.2 (general), 0.0/-0.02 (high precision) |
| 厚度公差 (mm) | ±0.2 (general), ±0.005 (high precision) |
| 通光孔径 | >80% (small size), >95% (large size) |
| 平行度 | 3 min. (general), 3 sec. (high precision) |
| 表面质量 | 60/40 (general), 10/5 (high precision) |
| 面型 (per 25mm@633nm) | λ /2(general), λ/10 (high precision) |
| 倒角(face width x 45。) | <0.25mm |
| 镀膜 | uncoated, ar, hr, pr, coating, etc. |
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