25mm Dia. x 30mm FL, 3-5μm Coated Germanium Meniscus Lens

Product Details Wavelength Range of 2 – 16μm Durable Design for Demanding Applications Superior Spherical Correction Due to material supply chain disruptions with germanium, there may be increased lead times and price changes on our germanium products. For more information, please contact our customer service team . Edmund Optics has limited remaining inventory of this part number and no raw material available to supply more once this is depleted. Please contact our Product Support Engineers to help with an alternate solution for your needs. Customer Service can provide you the latest price and availability. TECHSPEC Germanium Meniscus Lenses are designed for demanding infrared applications including infrared imaging or surveillance, remote sensing, or infrared spectroscopy. TECHSPEC Germanium Meniscus Lenses offer superior spherical correction and smaller spot sizes than comparable focal length TECHSPEC Germanium PCX Lenses . These meniscus lenses are offered uncoated or anti-reflection coated for increased performance in the designated coating wavelength range. Specifications General Type: Meniscus Lens Physical & Mechanical Properties Diameter (mm): 25.00 +0.0/-0.1 Center Thickness CT (mm): 2.50 ±0.10 Edge Thickness ET (mm): 1.5 Clear Aperture (%): 90.00 Centering (arcmin): <3 Optical Properties Effective Focal Length EFL (mm): 30.00 Focal Length Specification Wavelength (μm): 10.6 Back Focal Length BFL (mm): 28.31 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Germanium (Ge) f/#: 1.2 Numerical Aperture NA: 0.42 Coating: BBAR (3000-5000nm) Coating Specification: R avg <3.0% @ 3 - 5μm Wavelength Range (nm): 3000 - 5000 Wavelength Range (μm): 3 - 5 Radius R 1 (mm): 33.38 Radius R 2 (mm): 50.04 Surface Quality: 60-40 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × REACH 241: Compliant ×