Custom High Precision IR Optics and Lidar Polygon Mirrors

CaF2 Windows

Release time:2022-05-07 11:42viewed:times
  • CaF2 Windows
  • CaF2 Windows
  • CaF2 Windows
  • CaF2 Windows
  • CaF2 Windows

CaF2 Window

Calcium Fluoride is an optical grade glass which has an extensive transmision range from UV, visiable and IR spectrum. CaF2 has a high transmittance especially from 200nm to 7μm. The transmittance of uncoated caf2 window can up to 94% in visible range due to its low absorption and low index of refraction. CaF2 is widely used in UV and IR applications .

Wuhan Especial Optic offers high precision and quality caf2 windows with cost-benefit price as well as stable supply ability. Dimensions and shape depends on your project. Meanwhile, experienced engineer could advise you professional advices according to your applications, drawing is aslo available.

Feel free to write to us at or for a reasonable quote sheet.

CaF2 window specifications

Standard Precision                    

High Precision


5-150mm +0/-0.2mm

3-200mm +0/-0.2mm


1-50mm +/-0.1mm

1-50mm +/-0.05mm


3 arcmin

10 arcsec

Surface Quality




2 Lambda @632.8nm

Lambda/8 @632.8nm 

Clear Aperture




Protected <0.5mmx45deg

Protected <0.5mmx45deg


Optical Materials Selection Guides
Work Wavelength RangeSubstrate Materials
180 nm - 8.0 μmCalcium Fluoride (CaF2)
185 nm - 2.1 μmUV Fused Silica (JGS1)
200 nm - 5.0 μmSapphire (Al2O3)
200 nm - 6.0 μmMagnesium Fluoride (MgF2)
250 nm - 26  μmPotassium Bromide (KBr)
350 nm - 2.0 μmN-BK7 (equivalent to H-K9L)
600 nm - 16 μmZinc Selenide (ZnSe)
1.2 μm - 8.0  μmSilicon (Si)
1.9 μm - 16 μmGermanium (Ge)
150nm - 12 μmBarium Fluoride (BaF2)
350nm - 16 μmZinc Sulfide (ZnS)

Wuhan Especial OpticWechat scan code follow us

  • 24-hour hotline+86 027 87504830

  • Phone+86 18622556450

Copyright © 2012-2023 Wuhan Especial Optic Inc. ADD:4th Floor, Block F, Wuhan Overseas Scholar Business Park, 430074 Wuhan, China ICP:EICP Bei 鄂ICP备12006487号-1 Sitemap