The 20D620ER.4 is a ValuMax® Protected Gold Broadband Mirror 50.8 mm diameter, with a thickness of 12.7 mm, and flatness of λ/10. By taking advantage of advanced polishing techniques and our high volume manufacturing, ValuMax® mirrors are truly cost effective. This family of mirrors boasts six standard metallic and dielectric broadband coatings, covering the UV, visible, and IR; and are available in 50.8 mm (2.0 in.) diameter utilizing Borofloat® 33 substrates. This mirror has a 40-20 surface quality and is coated for 650-20,000 nm.

• 波长区域

  Broadband

• 波长范围

  650-20000 nm

• 镜片形状

  Round

• 镜片尺寸

  Ø50.8 mm

• 材料

  Borofloat® 33

• 镀膜类型

  Protected Gold

• 镀膜代码

  ER.4

• 表面质量

  40-20 scratch-dig

• 表面平面度

  λ/10 at 632.8 nm

• 入射角

  0-45°

• 通光孔径

  ≥central 80% of diameter

• S2 表面

  Ground

• 反射率

  Ravg>96%, Rmin>92% @ 650-1700 nmRavg>98%, Rmin>96% @ 1.7-20 µm

• 损伤阈值

  0.5 J/cm², 10 ns pulses , 20 Hz at 1064 nm

• 厚度

  12.7 mm  

• 厚度公差

  ±0.25 mm

• 直径

  50.8 mm  

• 直径公差

  +0/-0.13 mm

• 倒角

  0.38–1.14 mm face width

• 倒角公差

  45° ±15°

• 清洁

  See How to Clean Optics

20 d620er。4是一个ValuMax®保护黄金宽带镜子50.8毫米直径,厚度为12.7毫米,平坦的λ/ 10。利用先进的抛光技术和高容量生产、ValuMax®镜子是真正的成本效益。该系列镜子拥有六种标准金属和介质宽带涂层，覆盖紫外线、可见光和红外;和在直径50.8毫米(2.0英寸)利用Borofloat®33基质。这面镜子的表面质量为40-20，涂层为650- 20000纳米。