The 50FS02DV.2 is a circular variable metallic neutral density filter, made of UV grade Fused Silica, 50 mm in diameter, and coated for an OD range of 0-2.0.

Newport’s Circular Variable Neutral Density Filter is designed to attenuate the wide spectrum of low energy laser light from UV to near IR wavelength. The optical density gradient varies from 0–1.0, 0-2.0 and 0-4.0 around a by simply rotating the filter from 0 to 270 degrees. Fused silica substrate for these ND filters allows the transparency from 250-2500 nm range. The linear change in optical density is achieved by fine Inconel coating that allows the controlled linear attenuation of light beam in the designated optical density range for wide spectrum of light. 

• 尺寸

  Ø50.0 mm

• 光学密度

  0 - 2

• 波长范围

  250-2500 nm

• 材料

  UV grade fused silica

• 楔形

  ≤ 20 arc sec

• 耐用性

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

• 尺寸公差

  +0/-0.3 mm

• 表面平面度

  2λ

• 表面质量

  80-50 scratch-dig

• 倒角

  4.0–5.5 mm face width

• 倒角公差

  45° ±15°

• 清洁

  See How to Clean Optics

• 通光孔径

  ≥central 96% of dimensions

• 损伤阈值

  75 W/cm2 CW, 10 mJ/cm2 with 10 nsec pulses at 1064nm, typical

• 厚度

  2.0 mm

• 厚度公差

  ±0.25 mm

• 内径

  7.5 mm  

• 
  

50 fs02dv。2是一种圆形可变金属中性密度过滤器，由紫外级熔融二氧化硅制成，直径50mm，外径范围0-2.0。

纽波特的圆形可变中性密度滤光片被设计用来衰减从紫外到近红外波长的低能量激光的宽光谱。光密度梯度从0- 1.0,0-2.0和0-4.0在a周围的变化，简单地旋转过滤器从0到270度。这些ND过滤器的熔融硅衬底允许250-2500纳米范围的透明度。光学密度的线性变化是通过精细的Inconel涂层实现的，这种涂层可以控制光束在宽光谱指定的光密度范围内的线性衰减。