3mm Dia. x 4.5mm FL, MgF 2 Coated, Achromatic Doublet Lens

Product Details Designed for 0° Angle of Incidence Less Than 1.75% Reflectance Per Surface @ 400 – 700nm VIS 0° and VIS-NIR Coated Achromats Also Available TECHSPEC MgF 2 Coated Achromatic Lenses consist of two optical components cemented together to form an achromatic doublet which is computer optimized to correct for on-axis spherical and chromatic aberrations. These lenses feature a single layer of MgF 2 which provides less than 1.75% reflectivity from 400 – 700nm. TECHSPEC MgF 2 Coated Achromatic Lenses are best for applications involving multi-color (white light) imaging due to their specific doublet lens pairing that enables them to correct the color separation inherent in glass. Having eliminated the problematic chromatic aberrations, achromatic doublet lenses become the most cost-efficient means for polychromatic illumination and imaging. Specifications General Type: Achromatic Lens Physical & Mechanical Properties Diameter (mm): 3.00 +0.0/-0.025 Center Thickness CT (mm): 3.00 ±0.10 Center Thickness CT 1 (mm): 2.00 ±0.05 Center Thickness CT 2 (mm): 1.00 ±0.05 Edge Thickness ET (mm): 2.48 Clear Aperture CA (mm): 2.7 Centering (arcmin): 30-45 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 4.50 Focal Length Tolerance (%): ±1 Focal Length Specification Wavelength (nm): 587.6 Back Focal Length BFL (mm): 2.99 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More N-LAK22 / N-SF6 f/#: 1.5 Numerical Aperture NA: 0.33 Coating: MgF 2 (400-700nm) Coating Specification: R avg ≤1.75% @ 400 – 700nm Wavelength Range (nm): 400 – 700 Radius R 1 (mm): 3.16 Radius R 2 (mm): -2.23 Radius R 3 (mm): -7.88 Surface Quality: 20-10 Power (P-V) @ 632.8nm: 1.5λ Irregularity (P-V) @ 632.8nm: λ/4 Regulatory Compliance RoHS 2015: Compliant × Reach 224: Compliant × Certificate of Conformance: View ×