針孔可作為雷射的開口度調節劑空間率波器使用。針孔為鎳製板上開有孔，以φ16mm、厚度1.6mm的鋁製圓板固定。
此外，作為噪聲光通過消孔不能騎，他採用了孔的邊緣是平滑的，而不是雷射加工＂光蝕刻工藝＂。
如針孔徑為不甚需要大於1mm的孔徑精度時，敬請使用可變式針孔。
| 款型 | 針孔徑 [μm] |
針孔徑公差 [μm] |
RoHS | CAD |
| S71-1 | 1 | - | ● | |
| S71-5 | 5 | ±2.0 | ● | |
| S71-10 | 10 | ±2.0 | ● |
| 款型 | 針孔徑 [μm] |
針孔徑公差 [μm] |
RoHS | CAD |
| S71-1 | 1 | - | ● | - |
| S71-5 | 5 | ±2.0 | ● | - |
| S71-10 | 10 | ±2.0 | ● | - |
| S71-15 | 15 | ±2.0 | ● | - |
| S71-20 | 20 | ±3.0 | ● | - |
| S71-25 | 25 | ±3.0 | ● | - |
| S71-30 | 30 | ±3.0 | ● | - |
| S71-40 | 40 | ±4.0 | ● | - |
| S71-50 | 50 | ±4.0 | ● | - |
| S71-100 | 100 | ±5.0 | ● | - |
| S71-150 | 150 | ±6.0 | ● | - |
| S71-400 | 200 | ±6.0 | ● | - |
| S71-200 | 400 | ±8.0 | ● | - |
| S71-500 | 500 | ±8.0 | ● | - |
| S71-600 | 600 | ±9.0 | ● | - |
| S71-800 | 800 | ±9.0 | ● | - |
| S71-1000 | 1000 | ±10.0 | ● | - |
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