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Thermal Imaging Lenses

Photonics Spectra
Aug 2010
LightPath Technologies Inc.Request Info
LightPath Technologies has introduced f/1.0 athermalized long-wavelength infrared lens assemblies with a 10.65-mm focal length. Developed for uncooled infrared sensors using 8- to 12-μm infrared signatures, the lenses are designed as the primary optics for thermal imagers in a wide variety of applications, including homeland security, firefighting, predictive maintenance and driver vision enhancement systems in automobiles. The new lens assembly integrates proprietary Black Diamond molded chalcogenide infrared lenses that are a lower-cost substitute for high-volume diamond-turned germanium and zinc selenide optics. The optomechanical design, combined with the material properties of Black Diamond glasses, provides athermalization for temperature stability from –40 to 85 °C without additional cost.


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A crystalline semiconductor material that transmits in the infrared.
A noncrystalline, inorganic mixture of various metallic oxides fused by heating with glassifiers such as silica, or boric or phosphoric oxides. Common window or bottle glass is a mixture of soda, lime and sand, melted and cast, rolled or blown to shape. Most glasses are transparent in the visible spectrum and up to about 2.5 µm in the infrared, but some are opaque such as natural obsidian; these are, nevertheless, useful as mirror blanks. Traces of some elements such as cobalt, copper and...
infrared lens
A lens designed to function in the infrared portion of the electromagnetic spectrum.
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