Moulded infrared aspheres for thermal applications

LightPath Technologies has added two new moulded infrared aspheres to its catalogue of long wave infrared lenses. These lenses are designed to serve as the primary optics for thermal imagers or as collimating lenses for quantum cascade lasers (QCLs). The lenses could be used in a wide variety of applications, including homeland security, fire-fighting, predictive maintenance and driver's vision enhancement systems in cars.

The first lens, 390021, is an extended focal length lens designed to collimate light from a QCL enclosed in a temperature-controlled housing or cryostat. The primary applications are for infrared countermeasures (IRCM) and gas sensing equipment.

The second lens, 390023, is a low cost thermal imaging lens designed specifically for the low-cost thermal imaging security camera market. These new lenses are manufactured from LightPath’s Black Diamond chalcogenide glass, and are a less expensive substitute for high-volume, diamond-turned germanium and zinc selenide optics.