The KPX190 N-BK7 Precision Plano-Convex Lens is an uncoated, 2 inch (50.8 mm) diameter N-BK7 plano-convex lens with an effective focal length of 125 mm. It has = λ/4 surface irregularity, 40-20 scratch-dig, and is designed to meet the demanding requirements of laser electro-optic applications. It is manufactured from fine annealed optical glass and polished to tight tolerances using master test plates ensures minimum wavefront distortion. Tight surface quality tolerances minimize scatter and unwanted diffraction effects. 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.

• 透镜形状

  Plano-Convex

• 直径

  50.8 mm

• 透镜材料

  N-BK7

• 增透膜

  Uncoated

• 有效焦距

  125 mm  

• 表面质量

  40-20 scratch-dig

• 表面精度，不规则性

  λ/4

• 表面精度（光圈）

  1.5 λ  

• 表面平面度

  λ/4

• 后焦距

  119.59 mm  

• F/＃

  2.4  

• 对中

  ≤3 arc min

• 主平面 2

  -5.40 mm  

• 曲率半径

  64.600 mm  

• 倒角

  0–0.8 mm face width

• 倒角公差

  45° ±15°, typical

• 直径公差

  +0/-0.1 mm

• 焦距公差

  ±1 %

• 中心厚度

  8.203 mm  

• 中心厚度公差

  ±0.1 mm

• 边缘厚度

  3.0 mm  

• 通光孔径

  ≥central 90% of diameter

• 清洁

  See How to Clean Optics

KPX190 N-BK7精密平面凸透镜是一种无涂层、直径为2英寸(50.8毫米)的N-BK7平面凸透镜，有效焦距为125毫米。=λ/ 4表面不规则,40-20 scratch-dig,和设计用于满足的要求要求激光光电应用程序。它是由精密退火光学玻璃和抛光到紧密公差使用主测试板确保最小的波前畸变。紧密的表面质量公差可以最小化散射和不必要的衍射效应。N-BK7是大多数可见和近红外应用的优秀材料。它是最常见的光学玻璃，它提供了良好的性能和价值。