Infrared Filters
REFLEX Analytical complements their product line of infrared optics and lenses with infrared (IR) filters. An IR filter is an optic which is specifically fabricated to remove visible light and only pass infrared light. In military, security and surveillance applications the near and mid-infrared are of most interest, and these are usually divided into the shortwave infrared band between 0.7 and 4µm, the midwave infrared band between 4 and 6µm, and the longwave infrared band between 8 and 15µm.
Why the different infrared labels? For military applications what is of interest is the radiation that can penetrate the atmosphere and be detected. It turns out that the short, mid and longwave infrared bands correspond to those wavelengths that easily penetrate air without being rapidly absorbed or scattered. The shortwave infrared band is associated with jet engine exhausts, gun barrel exhaust gases, munition explosions and other hot objects. The midwave infrared band is associated with running turbine and piston engines, and other high temperature operating objects. The longwave infrared band is associated with human body heat, structures or buildings, and other objects at similar temperatures.
REFLEX Analytical offers a series of IR filter types depending upon the application's requirement. Each IR filter type is wavelength and application dependent.
Scroll below for examples, spectral transmission curves, pricing and order details. Unit pricing is based on in-stock status. If the stock is depleted, unit pricing is subject to change and becomes based on current material availability, production criteria and related costs.The export of this product without proper licensing is strictly prohibited and falls under ITAR per title 22, CFR, parts 120-130. Contact the U.S. Department of State.
Mid-Infrared Bandpass Filters (CWL 2.70µm, 2.95µm, 3.46µm, 3.6µm, 4.0µm, 4.26µm, 4.67µm, 5.30µm, 10.0µm and 10.6µm)
CLICK HERE to download the product sheet.
8 - 12µm Infrared Bandpass Filter average 80% transmittance between 8 - 12µm blocking less than 0.10% transmittance from UV - 20µm. Also available to order below are Infrared Broadband Filters for the wavelength range 3 - 5µm, 8 - 12µm, 2 - 14µm and 8 - 14µm.
