23mm Dia x 40.3mm EFL Hastings Triplet Achromatic Lens

Product Details Unique, 3-Element Design MgF 2 Coated Steinheil Triplet Achromatic Lenses also Available TECHSPEC Hastings Triplet Achromatic Lenses feature a unique, three-element design that provides distortion free, color-correct viewing. These lenses are computer designed to interact with each other, contributing to the reduction or elimination of “pincushion” distortion, in addition to chromatic and spherical aberrations. TECHSPEC Hastings Triplet Achromatic Lenses are composed of two concave meniscus elements cemented to a double-convex lens. These lenses are AR coated with MgF2, making them ideal for performance in the VIS range. Specifications General Type: Achromatic Triplet Lens Physical & Mechanical Properties Diameter (mm): 23.00 +0.0/-0.025 Center Thickness CT (mm): 18.00 ±0.3 Center Thickness CT 1 (mm): 11.00 Center Thickness CT 2 (mm): 3.50 Edge Thickness ET (mm): 13.79 Centering (arcmin): <3 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 40.30 Focal Length Tolerance (%): ±2 Focal Length Specification Wavelength (nm): 587.6 Back Focal Length BFL (mm): 33.90 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More N-F2 / N-BK7 / N-F2 f/#: 1.75 Numerical Aperture NA: 0.29 Coating: MgF 2 (400-700nm) Coating Specification: R avg ≤1.75% @ 400 - 700nm Wavelength Range (nm): 400 - 700 Radius R 1 (mm): 32.48 Radius R 2 (mm): 18.15 Radius R 3 (mm): -18.15 Radius R 4 (mm): -32.48 Surface Quality: 40-20 Power (P-V) @ 632.8nm: 1.5λ Irregularity (P-V) @ 632.8nm: λ/4 Regulatory Compliance RoHS 2015: Compliant × Reach 219: Compliant × Certificate of Conformance: View ×