The FSQ-U340 Visible Absorbing Filter is a 50.8 x 50.8 mm dark glass optical filter that passes UV and absorbs visible wavelengths made of Hoya U-340 filter glass.  These filters are precision polished for demanding research or OEM applications and are ideal for extration of UV wavelengths.

• 类型

  Visible Absorbing Filter

• 尺寸

  50.8 x 50.8 mm

• 中心波长

  340 nm

• 材料

  Hoya U340 or equivalent

• 表面质量

  60-40 scratch-dig

• 表面平面度

  ≤2λ at 632.8 nm over the clear aperture

• 厚度

  2.0 to 3.0 mm, typical

• 尺寸公差

  ±0.3 mm

• 通光孔径

  central ≥ 80% of area

• 入射角

  0°

• 损伤阈值

  30 W/cm2 CW, Typical

• 楔形

  ≤3 arc min

• 倒角

  Up to 1 mm face width

• 倒角公差

  45° ±15°

• 清洁

  See How to Clean Optics

FSQ-U340可见光吸收滤光片是一种50.8 x 50.8 mm的深色玻璃滤光片，它通过紫外线，吸收Hoya U-340滤光片的可见光波长。这些滤光片经过精密抛光，可用于高要求的研究或OEM应用，是提取紫外波长的理想选择。