The CAPX12 is a Plano-Convex Infrared Lens, made of CaF2 material. It has a diameter of 25.4 mm, and an effective focal length of 75 mm. Calcium Fluoride lenses are an excellent choice of material for making lenses for UV to NIR wavelengths (180 nm - 8 μm). It has high average transmission and low chromatic aberration compared to various IR materials. In NIR regime, CaF2 exhibits very low GVD which makes it suitable for applications using femtosecond IR pulses.

• 透镜形状

  Plano-Convex

• 直径

  25.4 mm

• 透镜材料

  CaF2

• 增透膜

  Uncoated

• 有效焦距

  75.0 mm  

• 表面质量

  40-20 scratch-dig

• 表面精度，不规则性

  λ/4 at 633 nm

• F/＃

  2.95  

• 对中

  ≤3 arc min

• 曲率半径

  31.369  

• 直径公差

  +0/-0.12 mm

• 中心厚度

  3.772 mm  

• 中心厚度公差

  ±0.12 mm

• 通光孔径

  ≥central 90% of diameter

CAPX12是一种由CaF2材料制成的平凸红外透镜。它的直径为25.4 mm，有效焦距为75 mm。氟化钙晶体材料是一个不错的选择,使紫外线眼镜近红外光谱波长(180 nm - 8μm)。与各种红外材料相比，具有较高的平均透射率和较低的色差。在近红外条件下，CaF2表现出非常低的GVD，适合于飞秒红外脉冲的应用。