12.5mm Diameter x 25mm EFL Aspherized Achromatic Lens

Product Details Unique Innovative Design, Low Cost, Color-Corrected Asphere Better Color Correction than Standard Achromatic Lenses Similar Spherical Aberration Correction to Machined Aspheres Prescription Information Available TECHSPEC Aspherized Achromats bridge the gap between color-corrected achromats and spherical aberration-corrected aspheres. This unique design results in a cost-effective, color-corrected aspheric component. The doublet lenses consist of two cemented elements matched for their color-correction ability and small RMS spot size. The second surface of the doublet is fused with a molded polymer aspheric surface. These molds create a stable aspheric contour, removing or reducing wavefront errors present in typical achromats while boosting numerical aperture. TECHSPEC Aspherized Achromats’ typical applications include fiber optic focusing or collimation, image relay, inspection, scanning, and high numerical aperture imaging. These lenses were honored with the PhAST/Laser Focus World Innovation Award for Optics and Optical Components. Specifications General Type: Achromatic Lens Note: VIS 0° Coating on First Surface, Second Surface is Aspheric Polymer Physical & Mechanical Properties Diameter (mm): 12.50 +0.00/-0.05 Center Thickness CT (mm): 5.58 ±0.2 Center Thickness CT 1 (mm): 4.00 Center Thickness CT 2 (mm): 1.58 Edge Thickness ET (mm): 4.28 Clear Aperture CA (mm): 11.00 Centering (arcmin): ≤5 Optical Properties Effective Focal Length EFL (mm): 25.00 Focal Length Specification Wavelength (nm): 587.6 Back Focal Length BFL (mm): 21.69 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More N-LAK8 / N-SF57 f/#: 2.00 Numerical Aperture NA: 0.25 Coating: VIS 0° (425-675nm) Coating Specification: R avg ≤0.4% @ 425 – 675nm Wavelength Range (nm): 425 – 675 Radius R 1 (mm): 16.60 Radius R 2 (mm): 26.00 Radius R 3 (mm): 267.77 Surface Quality: 60-40, glass surface 80-50, polymer surface Environmental & Durability Factors Operating Temperature (°C): -20°C to 80°C Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × REACH 241: Compliant ×