25mm Dia. x 25mm FL, BBAR (1650-3000nm) Coated, Si Plano-Convex Lens

Product Details Wavelength Range of 1.2 – 7μm Low Density and Dispersion Focal Lengths of 25 – 250mm Available Additional Infrared Lenses Available in Popular Substrates Our TECHSPEC Silicon Plano-Convex (PCX) Lenses feature precision polished surfaces, making them ideal for a variety of infrared applications, including Near-Infrared (NIR) imaging, and infrared spectroscopy. Available in a variety of focal lengths from f/1 thru f/10, the lenses are offered uncoated or broadband anti-reflection coated. For more information on Silicon properties, please review our guide to selecting The Correct Material for Infrared (IR) Applications . Specifications General Type: Plano-Convex Lens Physical & Mechanical Properties Diameter (mm): 25.00 +0.0/-0.1 Center Thickness CT (mm): 3.50 ±0.10 Edge Thickness ET (mm): 2.19 Centering (arcmin): <3 Clear Aperture CA (mm): 24 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 25.00 @ 10.6μm Back Focal Length BFL (mm): 23.98 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Silicon (Si) f/#: 1.00 Coating: BBAR (1650-3000nm) Coating Specification: R avg <1% @ 1650 - 3000nm R abs <2% @ 1650 - 3000nm Wavelength Range (nm): 1650 - 3000 Surface Quality: 60-40 Power (P-V) @ 632.8nm: 2λ Irregularity (P-V) @ 632.8nm: λ/2 Radius R 1 (mm): 60.44 Numerical Aperture NA: 0.50 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 235: Compliant ×