50mm Dia., 0.50 NA, Uncoated, Calibration Grade Aspheric Lens

Product Details Complete Metrology Data Provided Precision Grade Aspheric Surface 0.66 and 0.50 NA Lenses Our TECHSPEC Calibration Grade Aspheric Lenses offer the ultimate in performance and precision available from an off-the-shelf polished aspheric lenses. Featuring improved aspheric surface figure, surface quality, and centering specification over our TECHSPEC Aspheric lenses , these optical components are ideal for integration into R&D and OEM applications alike. With high numerical apertures, the lenses are ideal for improving the efficiency of low light level detection systems, or for applications requiring a compact optical path. Each aspheric lens is serialized and provided with a complete metrology data package. The test data package includes a surface profile performed on our Taylor Hobson Talysurf Profilometer, an interferogram of the spherical surface, and tested values for diameter, center thickness, and centration. For custom designed calibration grade aspheric lenses, coating requirements, or volume pricing, please contact our Sales Department . Specifications General Type: Aspheric Lens Physical & Mechanical Properties Diameter (mm): 50.00 +0.0/-0.1 Center Thickness CT (mm): 19.40 Edge Thickness ET (mm): 7.85 Clear Aperture CA (mm): 46.00 Centering (arcmin): ≤1 Shape of Back Surface: Plano Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 50.00 @ 587.6nm Back Focal Length BFL (mm): 37.79 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More L-BAL35 f/#: 1.00 Numerical Aperture NA: 0.50 Abbe Number (v d ): 61.15 Index of Refraction (n d ): 1.589 Coating: Uncoated Wavelength Range (nm): 330 – 2400 Focal Length Specification Wavelength (nm): 587.6 Aspheric Design Wavelength (nm): 587.6 Surface Quality: 20-10 Asphere Figure Error, RMS @ 632.8nm: 0.4λ Conjugate Distance: Infinite Power (diopters): 20.00 Material Properties Coefficient of Thermal Expansion CTE (10 -6 /°C): 6.6 Regulatory Compliance RoHS 2015: Compliant × Reach 223: Compliant × Certificate of Conformance: View ×