Plano-Convex Lens, N-BK7, 6.35 mm Diameter, 6.4 mm EFL, 400-700 nm

Product Series Overview

• Lens Shape
  Plano-Convex
   
• Diameter
  6.35 mm
   
• Lens Material
  N-BK7
   
• Antireflection Coating
  400-700 nm
   
• Effective Focal Length
  6.4 mm  
   
• Surface Quality
  60-40 scratch-dig
   
• Surface Accuracy, Irregularity
  λ/2
   
• Surface Accuracy, Power
  2.5 λ  
   
• Surface Flatness
  λ/4
   
• Focal Length, Back
  2.85 mm  
   
• F/#
  1  
   
• Centration
  ≤3 arc min
   
• Principle Plane 2
  -3.54 mm  
   

• Radius of Curvature
  3.300 mm  
   
• Chamfers
  0–0.6 mm face width
   
• Chamfers Angle/Tolerance
  45° ±15°, typical
   
• Diameter Tolerance
  +0/-0.15 mm
   
• Focal Length Tolerance
  ±2 %
   
• Center Thickness
  5.38 mm  
   
• Center Thickness Tolerance
  ±0.2 mm
   
• Edge Thickness
  3.0 mm  
   
• Clear Aperture
  ≥central 90% of diameter
   
• Coating Type
  Visible Single-Layer MgF2
   
• Coating Code
  -C
   
• Cleaning
  Non-abrasive method, acetone or isopropyl alcoholon lens tissue recommended
•