The 50G02AV.1 Circular Variable Metallic ND Filter is a circular variable metallic neutral density filter, made of N-BK7 glass. It is 127 mm in diameter with surface flatness of ≤1λ , and coated for an OD range of 0.05-2.0. Our circular variable neutral density filters are designed to simplify attenuation and beam splitting in the visible to NIR. The variable attenuation and beam splitting around a 270° circle is achieved by a thin, reflective aluminum film. A broadband, visible AR coating on the back side allows the filter to be left in the beam path at all times with minimal losses or ghost images.

• 尺寸

  Ø127.0 mm

• 光学密度

  0.05 - 2

• 光学密度公差

  ±0.15 over 270° at 0° AOI

• 材料

  N-BK7

• 耐用性

  Metalized area MIL-M-13508C, AR coated area MIL-C-675, moderate abrasion

• 尺寸公差

  +0/-0.25 mm

• 表面平面度

  ≤1λ

• 表面质量

  30-10 scratch-dig

• 倒角

  0.50–1.52 mm face width

• 倒角公差

  45° ±15°

• 清洁

  See How to Clean Optics

• 通光孔径

  From 33 mm to 101 mm diameter

• 损伤阈值

  75 W/cm2 CW, 10 mJ/cm2 with 10 nsec pulses at the specified wavelength, typical

• 厚度

  9.53 mm

• 厚度公差

  ±0.38 mm

• 内径

  25.4 mm  

50 g02av。1圆形可变金属ND滤波器是由N-BK7玻璃制成的圆形可变金属中性密度滤波器。直径是127毫米与表面平面度≤1λ和涂布OD 0.05到-2.0之间。我们的圆形可变中性密度过滤器的设计，以简化衰减和光束分裂在可见的近红外。可变衰减和光束分裂270°循环是通过薄,反光铝膜。在背面的宽带，可见的AR涂层允许过滤器被留在光束路径在任何时候以最小的损失或鬼图像。