Compare Model Drawings, CAD & Specs Diameter Effective Focal Length (EFL) F/# Surface Quality Availability Price
Focusing Lens, 25.4 mm, N-BK7/A, Bi-Convex, 33 mm FL, Uncoated
$872
In Stock
25.4 mm 33.0 mm 1.3 60-40 scratch-dig
In Stock
Focusing Lens, 38.1 mm, N-BK7/A, Bi-Convex, 50 mm EFL, Uncoated
$124
In Stock
38.1 mm 50.0 mm 1.3 60-40 scratch-dig
In Stock
Focusing Lens, 38.1 mm, N-BK7/A, Bi-Convex, 75 mm EFL, Uncoated
$119
In Stock
38.1 mm 75.0 mm 2 60-40 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 6.35 mm Diameter, 6.4 mm EFL, Uncoated
$45
In Stock
6.35 mm 6.4 mm 1 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 6.35 mm Diameter, 12.7 mm EFL, Uncoated
$35
In Stock
6.35 mm 12.7 mm 2 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 6.35 mm Diameter, 25.4 mm EFL, Uncoated
$35
In Stock
6.35 mm 25.4 mm 4 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 12.7 mm Diameter, 12.7 mm EFL, Uncoated
$35
In Stock
12.7 mm 12.7 mm 1 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 12.7 mm Diameter, 19.0 mm EFL, Uncoated
$35
In Stock
12.7 mm 19.0 mm 1.4 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 12.7 mm Diameter, 25.4 mm EFL, Uncoated
$35
In Stock
12.7 mm 25.4 mm 2 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 12.7 mm Diameter, 38.1 mm EFL, Uncoated
$35
In Stock
12.7 mm 38.1 mm 3 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 12.7 mm Diameter, 50.2 mm EFL, Uncoated
$35
In Stock
12.7 mm 50.2 mm 3.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 12.7 mm Diameter, 62.9 mm EFL, Uncoated
$35
In Stock
12.7 mm 62.9 mm 4.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 12.7 mm Diameter, 75.6 mm EFL, Uncoated
$35
In Stock
12.7 mm 75.6 mm 5.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 19.0 mm EFL, Uncoated
$41
In Stock
25.4 mm 19.0 mm 0.7 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 25.4 mm EFL, Uncoated
$41
In Stock
25.4 mm 25.4 mm 1 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 38.1 mm EFL, Uncoated
$41
In Stock
25.4 mm 38.1 mm 1.5 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 50.2 mm EFL, Uncoated
$41
In Stock
25.4 mm 50.2 mm 1.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 62.9 mm EFL, Uncoated
$41
In Stock
25.4 mm 62.9 mm 2.4 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 75.6 mm EFL, Uncoated
$41
In Stock
25.4 mm 75.6 mm 2.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 88.3 mm EFL, Uncoated
$41
In Stock
25.4 mm 88.3 mm 3.4 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 100 mm EFL, Uncoated
$41
In Stock
25.4 mm 100 mm 3.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 125 mm EFL, Uncoated
$41
In Stock
25.4 mm 125 mm 4.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 150 mm EFL, Uncoated
$41
In Stock
25.4 mm 150 mm 5.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 175 mm EFL, Uncoated
$41
In Stock
25.4 mm 175 mm 6.8 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 200 mm EFL, Uncoated
$41
In Stock
25.4 mm 200 mm 7.8 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 250 mm EFL, Uncoated
$41
In Stock
25.4 mm 250 mm 9.8 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 500 mm EFL, Uncoated
$41
In Stock
25.4 mm 500 mm 19.6 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 25.4 mm Diameter, 1000 mm EFL, Uncoated
$41
In Stock
25.4 mm 1000 mm 39.3 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 38.1 mm EFL, Uncoated
$69
In Stock
50.8 mm 38.1 mm 0.7 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 50.2 mm EFL, Uncoated
$69
In Stock
50.8 mm 50.2 mm 0.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 62.9 mm EFL, Uncoated
$69
In Stock
50.8 mm 62.9 mm 1.2 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 75.6 mm EFL, Uncoated
$69
In Stock
50.8 mm 75.6 mm 1.4 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 88.3 mm EFL, Uncoated
$69
In Stock
50.8 mm 88.3 mm 1.7 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 100 mm EFL, Uncoated
$69
In Stock
50.8 mm 100 mm 1.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 125 mm EFL, Uncoated
$69
In Stock
50.8 mm 125 mm 2.4 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 150 mm EFL, Uncoated
$69
In Stock
50.8 mm 150 mm 2.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 175 mm EFL, Uncoated
$69
In Stock
50.8 mm 175 mm 3.4 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 200 mm EFL, Uncoated
$69
In Stock
50.8 mm 200 mm 3.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 250 mm EFL, Uncoated
$69
In Stock
50.8 mm 250 mm 4.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 300 mm EFL, Uncoated
$69
In Stock
50.8 mm 300 mm 5.9 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 400 mm EFL, Uncoated
$69
In Stock
50.8 mm 400 mm 7.8 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 500 mm EFL, Uncoated
$69
In Stock
50.8 mm 500 mm 9.8 40-20 scratch-dig
In Stock
Bi-Convex Lens, N-BK7, 50.8 mm Diameter, 1000 mm EFL, Uncoated
$69
In Stock
50.8 mm 1000 mm 19.6 40-20 scratch-dig
In Stock

Specifications

  • Lens Shape
    Bi-Convex (Double Convex)
  • Lens Material
    N-BK7
  • Antireflection Coating
    Uncoated
  • 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
  • Center Thickness Tolerance
    ±0.1 mm
  • Clear Aperture
    ≥central 90% of diameter
  • Cleaning

Features