异形光学元件
| 属性 | 规格参数 | |
| 材质 | 各种高品质光学玻璃，n-bk7，熔融石英等 | |
| 尺寸公差 (mm) | ±0.15 (general), ±0.05 (high precision) | |
| 中心偏差（弧秒） | ±1 (general), ±5 (high precision) | |
| 角度公差 | ±0.2 deg. (general), ±10 arc sec. (high precision) | |
| 表面质量 | 60/40 (general), 20/10 (high precision) | |
| n | for flat surface | 1 (general), 0.2 (high precision) |
| for spheric surface | 8 (general), 2 (high precision) | |
| △n | for flat surface | 0.5 (general), 0.1 (high precison) |
| for spheric surface | 2 (general), 0.5 (high precison) | |
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