Edmund Optics Inc. Hybrid Ge Aspheric Lens 25mm Dia x 12.5mm FL 3-5μm Coating NT68-259

Color Corrected for 3 5μm Near Diffraction Limited Focusing Performance Full Prescription Data Available Our TECHSPEC® Germanium Infrared (IR) Hybrid Aspheric Lenses provide diffraction limited focusing performance at any wavelength in the 3 5μm region, and near diffraction limited performance when used over the entire 3 -5μm spectral range. They are ideal for integration into imaging applications, FTIR spectrometers, or any Mid-Wave IR application utilizing a broad band light source.Each hybrid aspheric lens is coated for >95% transmission and <0.5% reflection at 3 5μm for the most efficient use of costly infrared illumination. However, transmission is limited by the inherent diffraction efficiency of the aspheric surface, yielding lower overall transmission at the extremes of the design spectral band. For custom design or coating options, please contact our Sales Department.