The 39225 Focusing Lens is used with the 77259 Focusing Lens Assembly. It is a 1.5 inch (38.1 mm) diameter, Borosilicate Crown Glass, Bi-convex Lens with a 75 mm Focal Length. Bi-convex lenses are for imaging with little change in magnification. 330 to 2200 nm wavelength range.

• 类型

  Bi-Convex Focusing Lens

• 透镜形状

  Bi-Convex

• 直径

  38.1 mm

• 透镜材料

  Borosilicate Crown Glass

• 增透膜

  Uncoated

• F/＃

  F/2

• 有效焦距

  75.0 mm

• 表面质量

  60 - 40

• 材料

  Borosilicate Crown Glass

• 对中

  3 arc min

• 尺寸

  Ø38.1 mm

• 
  

39225聚焦透镜与77259聚焦透镜组件一起使用。它直径1.5英寸(38.1毫米)，硼硅酸盐皇冠玻璃，双凸透镜，焦距75毫米。双凸透镜适用于放大率变化不大的成像。330 ~ 2200 nm波长范围。