轴抛物面镜比其表亲,离轴抛物线提供了一些优势:
可以实现的f值更高(“更快”),因此可以集中更多的能量。
具有3-D旋转对称性,导致给定规格的较低价格。
一般情况下(除极端f数字)对齐将不那么重要,因此更容易。
鉴于上述情况,较低的值的表面粗糙度和斜率误差更容易实现。
标准镜面配有铝加氟化镁镀膜。根据直径,还可提供一系列专业镀膜。选项显示在本数据表的背面。如果需要,光谱曲线可用于每个镀膜运行。
应用
望远镜
激光雷达系统
准直器
扩束器
大功率激光束聚焦
轴抛物面镜规格
直径可达600mm
非圆形
在633nm处的表面精度高达λ/ 20
微观粗糙度通常小于1.2nm RMS
广泛的镀膜范围
直径: | 100 | 125 | 152 | 205 | 254 | 305 | 356 | 406 | 457 | 500 | 600 | 800 | ||
孔径: | 90 | 110 | 140 | 190 | 230 | 290 | 330 | 380 | 431 | 475 | 570 | 740 | ||
边缘厚度: | 17 | 20 | 25 | 33 | 42 | 50 | 62 | 75 | 75 | 84 | 100 | 135 | ||
焦距 | f # | f # | f # | f # | f # | f # | f # | f # | f # | f # | f # | f # | ||
100 | 1.1 | 0.9 | ||||||||||||
150 | 1.7 | 1.4 | 1.1 | 0.8 | ||||||||||
200 | 2.2 | 1.8 | 1.4 | 1.1 | 0.9 | |||||||||
300 | 3.3 | 2.7 | 2.1 | 1.6 | 1.3 | 1.0 | ||||||||
400 | 4.4 | 3.6 | 2.9 | 2.1 | 1.7 | 1.4 | 1.2 | |||||||
500 | 5.6 | 4.5 | 3.6 | 2.6 | 2.2 | 1.7 | 1.5 | 1.3 | ||||||
600 | 6.7 | 5.5 | 4.3 | 3.2 | 2.6 | 2.1 | 1.8 | 1.6 | 1.4 | |||||
750 | 8.3 | 6.8 | 5.4 | 3.9 | 3.3 | 2.6 | 2.3 | 2.0 | 1.7 | 1.6 | ||||
1000 | 11.1 | 9.1 | 7.1 | 5.3 | 4.3 | 3.4 | 3.0 | 2.6 | 2.3 | 2.1 | 1.8 | |||
1250 | 13.9 | 11.4 | 8.9 | 6.6 | 5.4 | 4.3 | 3.8 | 3.3 | 2.9 | 2.6 | 2.2 | |||
1500 | 16.7 | 13.6 | 10.7 | 7.9 | 6.5 | 5.2 | 4.5 | 3.9 | 3.5 | 3.2 | 2.6 | 2.0 | ||
1750 | 19.4 | 15.9 | 12.5 | 9.2 | 7.6 | 6.0 | 5.3 | 4.6 | 4.1 | 3.7 | 3.1 | 2.4 | ||
2000 | 22.2 | 18.2 | 14.3 | 10.5 | 8.7 | 6.9 | 6.1 | 5.3 | 4.6 | 4.2 | 3.5 | 2.7 | ||
2500 | 17.9 | 13.2 | 10.9 | 8.6 | 7.6 | 6.6 | 5.8 | 5.3 | 4.4 | 3.4 | ||||
3000 | 15.8 | 13.0 | 10.3 | 9.1 | 7.9 | 7.0 | 6.3 | 5.3 | 4.1 | |||||
4000 | 17.4 | 13.8 | 12.1 | 10.5 | 9.3 | 8.4 | 7.0 | 5.4 | ||||||
材质: | fine-annealed pyrex with one face bubble selected. Zerodur, | ULE are optional. | ||||||||||||
尺寸误差: | +0/-1mm | |||||||||||||
厚度误差: | +0/-2mm | |||||||||||||
焦距: | +-1% | |||||||||||||
表面精度: | lambda/10 p-v@633nm across entire clear aperture for f#1 or slower | |||||||||||||
lambda/5 p-v@633nm | across entire clear aperture for faster than f#1 | |||||||||||||
表面质量: | 60/40 to MIL-O-13830 Rev H in which 60=60microns and 40=0.40mm | |||||||||||||
镀膜: | Al+MgFl2 to MIL-M-13508 for abrasion and adhesion | |||||||||||||
光谱曲线: | supplied free if requested at time of order | |||||||||||||
微观粗糙度: | <1.2nm rms. Measurements of roughness are not included in price. | |||||||||||||
测试: | autocollimation against certified reference flat using Zygo GPI or LUPI. | |||||||||||||
Small blank area in centre is unavoidable due to central obstruction. | ||||||||||||||