Compare Model Drawings, CAD & Specs Diameter Effective Focal Length (EFL) F/# Availability Price
Plano-Concave Lens, N-BK7, 6.35 mm Diameter, -25 mm EFL, 430-700 nm
$55
6.35 mm -25 mm -3.9
Plano-Concave Lens, N-BK7, 6.35 mm Diameter, -12.5 mm EFL, 430-700 nm
$55
6.35 mm -12.5 mm -1.9
Plano-Concave Lens, N-BK7, 12.7 mm Diameter, -100 mm EFL, 430-700 nm
$55
12.7 mm -100 mm -7.8
Plano-Concave Lens, N-BK7, 12.7 mm Diameter, -75 mm EFL, 430-700 nm
$55
12.7 mm -75 mm -5.9
Plano-Concave Lens, N-BK7, 12.7 mm Diameter, -50 mm EFL, 430-700 nm
$55
12.7 mm -50 mm -3.9
Plano-Concave Lens, N-BK7, 12.7 mm Diameter, -25 mm EFL, 430-700 nm
$55
12.7 mm -25 mm -1.9
Plano-Concave Lens, N-BK7, 25.4 mm Diameter, -200 mm EFL, 430-700 nm
$55
25.4 mm -200 mm -7.8
Plano-Concave Lens, N-BK7, 25.4 mm Diameter, -150 mm EFL, 430-700 nm
$55
25.4 mm -150 mm -5.9
Plano-Concave Lens, N-BK7, 25.4 mm Diameter, -100 mm EFL, 430-700 nm
$55
25.4 mm -100 mm -3.9
Plano-Concave Lens, N-BK7, 25.4 mm Diameter, -75 mm EFL, 430-700 nm
$55
25.4 mm -75 mm -2.9
Plano-Concave Lens, N-BK7, 25.4 mm Diameter, -50 mm EFL, 430-700 nm
$55
25.4 mm -50 mm -1.9
Plano-Concave Lens, N-BK7, 25.4 mm Diameter, -25 mm EFL, 430-700 nm
$55
25.4 mm -25 mm -0.9
Plano-Concave Lens, N-BK7, 50.8 mm Diameter, -500 mm EFL, 430-700 nm
$96
50.8 mm -500 mm -9.8
Plano-Concave Lens, N-BK7, 50.8 mm Diameter, -250 mm EFL, 430-700 nm
$96
50.8 mm -250 mm -4.9
Plano-Concave Lens, N-BK7, 50.8 mm Diameter, -200 mm EFL, 430-700 nm
$96
50.8 mm -200 mm -3.9
Plano-Concave Lens, N-BK7, 50.8 mm Diameter, -150 mm EFL, 430-700 nm
$96
50.8 mm -150 mm -2.9
Plano-Concave Lens, N-BK7, 50.8 mm Diameter, -100 mm EFL, 430-700 nm
$96
50.8 mm -100 mm -1.9
Plano-Concave Lens, N-BK7, 50.8 mm Diameter, -75 mm EFL, 430-700 nm
$96
50.8 mm -75 mm -1.4

Specifications

  • Lens Shape
    Plano-Concave
  • Lens Material
    N-BK7
  • Antireflection Coating
    430-700 nm
  • Coating Type
    Visible Multilayer
  • Coating Code
    AR.14
  • Damage Threshold
    7.5 J/cm2, 10 ns pulses, 10 Hz at 532 nm
  • Surface Quality
    40-20 scratch-dig
  • Surface Accuracy, Irregularity
    λ/4
  • Surface Accuracy, Power
    1.5 λ
  • Surface Flatness
    λ/4
  • Centration
    ≤3 arc min
  • Chamfers
    0–0.8 mm face width
  • Chamfers Angle/Tolerance
    45° ±15°, typical
  • Focal Length Tolerance
    ±1 %
  • Diameter Tolerance
    +0/-0.1 mm
  • Clear Aperture
    ≥central 90% of diameter
  • Cleaning

Features