25mm Dia. x 30mm FL, SWIR Coated N-BK7 PCX Lens

Product Details Low Cost Alternative to Silicon, ZnSe, and Germanium Lenses Suitable for Applications in the 1650 – 2500nm Wavelength Range Various Coating Options: Uncoated, MgF 2 , VIS 0°, VIS-NIR, NIR I, NIR II, VIS-EXT, and YAG-BBAR TECHSPEC SWIR Coated N-BK7 Plano-Convex (PCX) Lenses have a positive focal length, making them ideal for collecting and focusing light in imaging applications. Featuring an AR Coating designed to provide less than 0.1% reflection from 1650 – 3000nm, these lenses are ideal for applications utilizing InGaAs sensors with detection ranges up to 2500nm. TECHSPEC SWIR Coated N-BK7 Plano-Convex (PCX) Lenses are a low cost, lightweight alternative to common infrared lenses manufactured from Silicon, Zinc Selenide, and Germanium substrates. Identical designs of these lenses are also offered uncoated or with broadband anti-reflective (BBAR) coatings, which include MgF 2 , VIS 0°, VIS-NIR, NIR I, NIR II, VIS-EXT, and YAG-BBAR. Note: While the coating is designed to provide low reflection out to 3000nm, N-BK7’s reduced transmission above 2200nm should be considered when integrating these lenses into sensitive applications. Specifications General Type: Plano-Convex Lens Physical & Mechanical Properties Diameter (mm): 25.00 +0.00/-0.025 Center Thickness CT (mm): 8.06 ±0.10 Edge Thickness ET (mm): 1.73 Centering (arcmin): <1 Clear Aperture CA (mm): 22.20 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 30.00 ±1% and/or 587.6nm Back Focal Length BFL (mm): 24.69 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More N-BK7 f/#: 1.20 Coating: BBAR (1650-3000nm) Coating Specification: R avg <1% @ 1650 - 3000nm @ 0° AOI R abs <2% @ 1650 - 3000nm @ 0° AOI Wavelength Range (nm): 1650 - 3000 Surface Quality: 40-20 Power (P-V) @ 632.8nm: 1.5/λ Irregularity (P-V) @ 632.8nm: λ/4 Radius R 1 (mm): 15.50 Numerical Aperture NA: 0.42 Regulatory Compliance Certificate of Conformance: View ×