• Low Insertion Loss
• Focal Length: 500 mm

This plastic plano-convex lenses made with Polytetrafluoroethylene (Virgin White PTFE, Teflon®), has a low dielectric constant of approximately 1.96 @ 520 GHz and an index of refraction of 1.4. The low dielectric constant of PTFE ensures that the insertion loss is reasonably low. PTFE is usable for frequencies up to ~2 THz.

• Material: PTFE Teflon®
• Dielectric Constant: 1.96 at 520 GHz
• Design Frequency: 500 GHz, n=1.4
• Surface Irregularity: 10 µm, corresponding to λ/20 at 1.5 THz
• Diameter Tolerance: +0.00/-0.20 mm
• Surface Quality: 60-40 Scratch-Dig
• Spherical Surface Power: 0.0025λ
• Centration: ≤3 arcmin
• Clear Aperture: >85% of diameter
• DIA: 50.0 mm
• f: 500.0 mm
• R: 200.0 mm
• Center Thickness t_c: 6.6 mm
• Edge Thickness t_e: 5.0 mm
• Back Focal Length f_b: 495.0 mm
• Suggested Mount: LMR2