Plano-Convex Lens, N-BK7, 6.35 mm Diameter, 25.4 mm EFL, Uncoated

KPX519
€ 811.40

Description

The KPX519 N-BK7 Plano-Convex Lens is an uncoated, 6.35 mm diameter N-BK7 plano-convex lens with an effective focal length of 25.4 mm. It has = λ/2 surface irregularity, 60-40 scratch-dig. N-BK7 is an excellent material for most visible and near infrared applications. It is the most common optical glass, and it provides great performance at a good value.

Product Series Overview

ValuMax N-BK7 Plano-Convex Lenses

 

Technical Specs

• Lens Shape
  Plano-Convex
   
• Diameter
  6.35 mm
   
• Lens Material
  N-BK7
   
• Antireflection Coating
  Uncoated
   
• Effective Focal Length
  25.4 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
  23.16 mm  
   
• F/#
  4  
   
• Centration
  ≤3 arc min
   

• Principle Plane 2
  -2.23 mm  
   
• Radius of Curvature
  13.120 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
  3.39 mm  
   
• Center Thickness Tolerance
  ±0.2 mm
   
• Edge Thickness
  3.0 mm  
   
• Clear Aperture
  ≥central 90% of diameter
   
• Cleaning
  Non-abrasive method, acetone or isopropyl alcoholon lens tissue recommended
   
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