NEWPORT 优铂特 KPX621-C MgF 2可见光N-BK7平凸透镜
平凸透镜，N-BK7，25.4 mm 直径，450 mm EFL，400-700 nm
The KPX621-C N-BK7 Plano-Convex Lens is a 400-700 nm anti-reflection coated, 25.4 mm diameter N-BK7 plano-convex lens with an effective focal length of 450 mm. It has = λ/2 surface irregularity, 60-40 scratch-dig. N-BK7 is an excellent material for most visible and near infrared applications. It is the most common optical glass, and it provides great performance at a good value.
参数
透镜形状
Plano-Convex
直径
25.4 mm
透镜材料
N-BK7
增透膜
400-700 nm
涂层类型
Visible Single-Layer MgF2
涂层代码
-C
损伤阈值
7 J/cm², 10 ns pulses, 20 Hz at 532 nm
表面质量
60-40 scratch-dig
表面精度，不规则性
λ/2
表面精度，功率
2.5 λ
F/＃
17.7
有效焦距
450 mm
后焦距
447.80 mm
曲率半径
233.424 mm
边缘厚度
3.0 mm
中心厚度
3.35 mm
主平面 2
-2.20 mm
对中
≤3 arc min
倒角
0.25-0.75 mm
倒角公差
45° ±15°, typical
焦距公差
±2 %
直径公差
+0/-0.15 mm
中心厚度公差
±0.2 mm
通光孔径
≥central 90% of diameter
清洁
See How to Clean Optics
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