The PAC076 Visible Achromatic Triplet Lens is a 400 to 700 nm antireflection coated, 1.5 inch (38.1 mm) diameter, BaSF 2, SF 3, and BaSF 2 precision achromatic triplet lens with an effective focal length of 125 mm. This triplet is optimized for 1:1 imaging, and is diffraction limited at 488, 514.5, and 632.8 nm. This achromat is computer designed to effectively minimize spherical aberration and coma when operating at infinite conjugate ratio, yielding smaller focused spot sizes. Unlike singlet lenses, this results in a constant focal length independent of aperture and far better off-axis performance. Achromats are superior to singlet lenses for monochromatic applications at any visible wavelength.

• 直径

  38.1 mm

• 透镜材料

  N-BaSF2 and N-SF3 and N-BaSF2

• 增透膜

  400-700 nm

• 有效焦距

  125 mm

• 表面质量

  40-20 scratch-dig

• 方向

  Steepest convex surface should face the infinite conjugate

• 设计波长

  486.1, 546.1, 656.3 nm

• 表面平面度

  λ/4

• 表面精度（光圈）

  1.5 λ  

• 后焦距

  117.5 mm  

• F/＃

  3.3  

• 对中

  ≤3 arc min

• 曲率半径

  117.307 mm  

• 半径 2

  48.297 mm

• 半径 3

  -117.307 mm

• 直径公差

  +0/-0.1 mm

• 焦距公差

  ±2.0%

• 中心厚度

  21.6 mm  

• 中心厚度公差

  ±0.3 mm

• 边缘厚度

  18.5 mm  

• 通光孔径

  90% of central diameter

• 厚度，中心 2

  3.6 mm  

• 清洁

  See How to Clean Optics

• 损伤阈值

  750 W/cm2 CW, 0.75 J/cm2 with 10 nsec pulses, typical, cement limitation

• 透射

  T>95% visible, T>92% at 1064 nm

• 透镜类型

  Achromatic Doublet

• 透镜形状

  Plano-Convex

PAC076可见光消色差三联镜头为400 ~ 700 nm涂膜，直径1.5英寸(38.1 mm)， BaSF 2、SF 3、BaSF 2精密消色差三联镜头，有效焦距125 mm。该三元组被优化为1:1成像，衍射极限分别为488、514.5和632.8 nm。这种消色差仪是计算机设计的，在无限共轭比下有效地减小了球面像差和彗差，从而减小了聚焦点的尺寸。与单线透镜不同的是，这种透镜的焦距与光圈无关，而且离轴性能要好得多。对于任何可见波长的单色应用，消色差透镜都优于单线透镜。