Edmund Optics Inc. Ge Aspheric Lens 25mm Dia x 40mm FL Uncoated NT68-240

Diffraction Limited Performance Variety of Coating Options Full Prescription Data Available Our TECHSPEC® Germanium Infrared (IR) Aspheric Lenses provide diffraction limited focusing performance over a broad spectral range in the Mid- and Long Wave infrared regions. Ideal for monochromatic light sources, such as quantum cascade lasers, these lenses offer a high performance alternative to standard plano-convex lenses.Each aspheric lens is available uncoated, or with BBAR coating options. Uncoated germanium has transmission of <50%, so custom anti-reflection (AR) coatings should be considered if specifying an uncoated lens. Each BBAR coated lens offers >95% transmission and <0.5% reflection, making it ideal for integration into a variety of OEM applications. For custom design or coating options, please contact our Sales Department.