A usual fallacy in the domain of thermography is that the visibility or clarity of certain objects would be similar or the same from visible light to infrared light. This is of course an imprecise inference as we are aware of the fact that those objects that are crystalline in visible light are actually nontransparent in the infrared spectrum. The following is the inventory of usually applicable objects for lenses and windows and their properties related to infrared transparency.
Amtir- 1Ge33 As12 Se55 Glass
Transmission range of 0.8-13 microns
Barium Fluoride (BaF2)
Transmission range of 0.15-12.5 microns
Potassium Bromide (KBr)
Transmission range of 0.21-28 microns
Caesium Iodide (CsI)
Transmission range of 0.25-55 microns
Potassium Chloride (KCl)
Transmission range of 0.21-21 microns
Cadmium Telluride (CdTe)
Transmission range of 2-25 microns
Sapphire (Al2O3)
Transmission range of 0.17-5.0 microns
Silicon (Si)
Transmission range of 1.2-10, 50-100 microns
High Resistivity Silicon (Si)
Transmission range of 1.2-10, 50-100 microns
Calcium Fluoride (CaF2)
Transmission range of 0.15-9.0 microns
Gallium Arsenide (GaAs)
Transmission range of 1-15 microns
Sodium Chloride (NaCl)
Transmission range of 0.2-20 microns
Germanium (Ge)
Transmission range of 2-17 microns
BK7 Schott Glass (BK7)
Transmission range of 0.35-2.0 microns
Fused Silica UV Grade (SiO2)
Transmission range of 0.18-3.5 microns
Fused Silica IR Grade (SiO2)
Transmission range of 0.18-3.5 microns
Lithium Fluoride Vacuum UV Grade (LiF)
Transmission range of 0.12-6.5 microns
Magnesium Fluoride (MgF2)
Transmission range of 0.13-7.0 microns
Quartz (SiO2)
Transmission range of 0.15-3.3 microns
Thallium Bromoiodide KRS-5 (TlBr-TlI)
Transmission range of 0.6-40 microns
Zinc Selenide Laser Grade (ZnSe CVD)
Transmission range of 0.55-20 microns
Zinc Sulfide Cleartran (ZnS)
Transmission range of 0.37-14 microns
Infrared Plastic
Transmission range of 8-12 and 15-40 microns
The near infrared spectral range covers 0.9 microns to 1.7 microns and it has proven its effectiveness in the domain of research, security, surveillance, military and other industrial applications. Having diverse applications for different industry verticals, the near infrared has become sought after across the globe.
The short wave spectral range is featured with manifold applications in the field of research with a spectral range that covers 2 microns to 6 microns. At present, ITI does not produce any short wave infrared cameras, but we hold the expertise in generating a short wave camera for you to suit your requirements.
The mid wave spectral range covers 3 microns to 5 microns of the infrared spectral range.
No doubt, the long wave spectral range is the sought after infrared camera available in the market. Long wave infrared covers 7 or 8 microns to 14 microns, the highest of all camera coverage of the spectral ranges. At the same time almost all materials found in the Universe release radiation in this spectral range, thereby making it a sophisticated camera of varied range of applications and general use.
*While we try to provide 100% accuracy in our online tools, we cannot guarantee it – Please use this tool for a quick reference only.
