The 20QB20 Interferometer Flat is ideally suited for use in a laboratory interferometer or as a quality assurance standard. To ensure long-term thermal stability and mechanical accuracy. This 2 inch (50.8 mm) diameter, 12.7 mm thick optic is polished from select UV fused silica. In order to double the utility of the optic, both faces are polished to the same λ/10 figure. Internal fringe patterns are virtually eliminated by a 30 arc min wedge between faces. Surface interferograms, that allow error mapping, are shipped with each flat.

• 直径

  50.8 mm

• 材料

  UV Grade Fused Silica

• 波长范围

  195-2100 nm

• 表面平面度

  λ/10 @ 632.8 nm

• 表面质量

  10-5 scratch-dig

• 厚度

  12.7 mm

• 厚度公差

  ±0.5 mm

• 倒角

  0.38–1.14 mm face width

• 倒角公差

  45° ±15°

• 清洁

  See How to Clean Optics

• 通光孔径

  Central 80% of diameter

• 直径公差

  +0/-0.25 mm

• 增透膜

  Uncoated

• 楔形

  30 ±5 arc min

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20QB20干涉仪平面非常适合用于实验室干涉仪或作为质量保证标准。确保长期的热稳定性和机械精度。这2英寸(50.8毫米)直径，12.7毫米厚的光学是抛光从选择UV熔融二氧化硅。为了双光的效用,两面抛光相同的λ/ 10图。内部条纹图案实际上是消除了30弧最小楔形之间的面孔。允许错误映射的表面干涉图随每个平面一起发送。