20mm Dia. x 20mm EFL Arton Plastic Asphere

Product Details Superior Durability for Harsh Environments High Heat Resistance Low Water Absorbency Arton Plastic Aspheric Lenses are ideal alternatives to PMMA or polycarbonate plastic aspheric lenses for weight sensitive, harsh environment applications. Typical plastic substrates degrade in performance in hot or humid environments. Arton, a polyolefin thermoplastic plastic substrate, maintains plastic’s high translucency and low birefringence, while featuring increased heat resistance and decreased water absorbency. Specifications General Type: Aspheric Lens Physical & Mechanical Properties Diameter (mm): 20.00 Edge Thickness ET (mm): 4.8 Clear Aperture CA (mm): 16.00 Flange Distance (mm): 17.28 Bevel: Protective as needed Optical Properties Effective Focal Length EFL (mm): 20.00 ±0.2 Back Focal Length BFL (mm): 17.28 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Arton Plastic f/#: 1.25 Numerical Aperture NA: 0.40 Abbe Number (v d ): 57.0 Coating: Uncoated Wavelength Range (nm): 400 – 1100 Conjugate Distance: Infinite Regulatory Compliance Certificate of Conformance: View ×