Double-Concave Lenses

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Double-Concave Lenses
Double concave lenses are symmetrical with equal radius on both sides.
Centration, arcmin <3 arcmin
Clear Aperture, % >90%
Coatings Available on request
Design Wavelength, nm 632.8 nm
Diameter Tolerance, mm +0.0/-0.1 mm
Focal Length Tolerance, % ±3 %
Protective chamfers <0,25 mm x 45 deg
Surface Figure <λ/4@632.8 nm
Surface Quality, S-D 40/20 S/D
Thickness Tolerance, mm ±0.1 mm
Description

Details

The biconcave lenses are used in optical systems in combination with other lenses. These lenses also work as beam expanders, optical character readers, viewers and projection systems. Under customer request anti-reflection or other types of coatings can applied.
Features
  • Lower spherical aberrations than for Plano-Concave lenses
  • Diverges incident light
  • Ideal for Experimenting and Prototyping Applications
Applications

Properties (Diameter D, Focal length L)

D, mmD, InchesL Minimal, mmL Maximal, mm
12,7 0.5 -12 -10.000
25,4 1 -25 -10.000
38,1 1.5 -40 -10.000
50,8 2 -50 -10.000
76,23-75-10.000
Name Diameter, mmEdge Thickness, mmFocal Length, mmMaterialROC1, mmROC2, mm Price Quantity

1-BCV-1-A127

12.75-12BK7-12.5912.59
US$41.60

1-BCV-1-A254

25.48-25BK7-26.1126.11
US$49.40

1-BCV-1-B127

12.75-15BK7-15.8515.85
US$39.00

1-BCV-1-B254

25.48-30BK7-31.4131.41
US$44.20

1-BCV-1-C127

12.74.5-20BK7-21.1121.11
US$36.40

1-BCV-1-C254

25.47-35BK7-36.7136.71
US$41.60

1-BCV-1-D254

25.47-50BK7-52.1652.16
US$39.00

1-BCV-2-A127

12.75-15UVFS-14.1114.11
US$67.60

1-BCV-2-A254

25.48-30UVFS-27.8127.81
US$78.00

1-BCV-2-B127

12.75-20UVFS-18.7518.75
US$62.40

1-BCV-2-B254

25.48-40UVFS-37.1237.12
US$75.40

1-BCV-2-C127

12.74.5-25UVFS-23.3223.32
US$62.40

1-BCV-2-C254

25.47-50UVFS-46.4346.43
US$75.40
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