20.4mm Diameter x 25mm FL, MgF 2 Coated, PCX Condenser Lens

Product Details Molded Illumination Lenses Aspheric or Spherical Designs High Numerical Apertures Condenser Lenses are molded lenses designed for illumination applications. Featuring large apertures and short focal lengths, Condenser Lenses are commonly used in emitter-detector applications, projection applications, or condensing illumination applications such as Koehler Illumination. The Aspheric Condenser Lenses are molded on the aspheric surface and ground and polished on the opposite face, offering superior performance. The Plano-Convex (PCX) Condenser Lenses are molded on both surfaces, offering excellent value. Specifications General Type: Condenser Lens Physical & Mechanical Properties Diameter (mm): 20.40 +0.1/-0.3 Center Thickness CT (mm): 5.29 ±0.13 Centering (arcmin): ≤30 Shape of Back Surface: Plano Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 25.00 Focal Length Tolerance (%): ±7 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Float Glass f/#: 1.23 Numerical Aperture NA: 0.40 Coating: MgF 2 (400-700nm) Coating Specification: R avg ≤ 1.75% @ 400 – 700nm Wavelength Range (nm): 400 – 700 Surface Quality: 80-50 (typical) Radius R 2 (mm): Plano Conjugate Distance: Infinite Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 235: Compliant ×