The FSR-KG3 Heat Absorbing Glass Filter is a 25.4 mm diameter infrared (IR) cut-off filter made of Schott KG3 filter glass.  Heat absorbing glass filters reduce the heat trasmitted through an optical system.  They have high transmission in the visible wavelength region and absorb in the IR wavelength region, making them also usefull as a shortpass filter.  These absorption filters are precision polished for demanding research or OEM applications.

• 类型

  Heat Absorbing Filter

• 尺寸

  Ø25.4 mm

• 中心波长

  VIS

• 材料

  Schott KG3 or equivalent

• 表面质量

  60-40 scratch-dig

• 表面平面度

  ≤1λ 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 diameter

• 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

FSR-KG3吸热玻璃过滤器是由Schott KG3过滤玻璃制成的直径25.4 mm的红外截止过滤器。吸热玻璃过滤器减少通过光学系统传递的热量。它们在可见波长区具有高的透射性，在红外波长区具有高的吸收性，因此也可用作短波滤波器。这些吸收式滤清器经过精密抛光，可用于高要求的研究或OEM应用。