10mm Dia. x 18mm FL, 650-1000nm AR Coated, Gradium Lens

Product Details Aspheric Performance Smaller Focused Spot Size Reduced Spherical Aberration GRADIUM lenses utilize advances in the manufacturing of axial gradient glass to improve lens performance. The process turns a glass of several SF layers into a single glass with a gradually changing index. The index may change by as much as 0.15 from the front surface to the back surface. This change in index allows for correction of system aberrations, especially spherical, yielding better images in infinite/finite imaging applications. GRADIUM lenses are ideal for laser focusing applications, providing smaller spot sizes compared to the standard PCX counterpart. Two broadband antireflection coating options are available that cover a large range of visible and near-infrared laser wavelengths. For OEM and high volume coating options, please contact our Applications Engineering Department to discuss your requirements. Specifications General Type: Gradient Index Lens Physical & Mechanical Properties Diameter (mm): 10.00 ±0.25 Center Thickness CT (mm): 2.50 ±0.1 Clear Aperture CA (mm): 9.00 Centering (arcmin): 1.00 Optical Properties Effective Focal Length EFL (mm): 18.00 @ 546nm Focal Length Tolerance (%): ±1 Back Focal Length BFL (mm): 16.52 f/#: 2.00 Numerical Aperture NA: 0.25 Coating: BBAR (650-1000nm) Coating Specification: R avg <0.5% @ 650 - 1000nm Wavelength Range (nm): 650 - 1000 Focal Length Specification Wavelength (nm): 546 Surface Quality: 40-20 Regulatory Compliance RoHS 2015: Compliant × Reach 209: Compliant × Certificate of Conformance: View ×