Senior sales engineer
Arminas Butkus +370 5 219 4884
Bi-convex spherical lenses
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Bi-convex spherical lenses

Main features

 

  • Fabricated from high-quality UV grade fused silica and BK7 glasses
  • Standard diameter is ø25,4 mm
  • Focal length selection from 25 mm to 100 mm
  • Antireflective coatings, custom substrate material, dimensions, and focal lengths available upon request

 

Application examples

 

  • Finite-conjugate imaging
  • Beam relay applications
  • Beam expanders
Request custom View stock
  • Description
  • Drawing
  • Specifications

Bi-convex spherical lenses feature two convex surfaces with the same radius of curvature, while their focal length is positive. These lenses perform the best at finite conjugate (0,2X - 5X ratio) applications. At 1:1 conjugate ratio spherical aberrations, coma and distortion are minimized.

Bi-convex spherical lenses
Substrate material BK7, UVFS
Wavelength range Uncoated BK7 lenses: 350 nm - 2 μm
Uncoated UVFS lenses: 185 nm - 2,1 μm
Clear aperture >90%
Diameter tolerance +0,0/-0,1 mm
Edge thickness 2 mm
Thickness tolerance ±0,5 mm
Centration error <3 arcmin
Focal length tolerance ±3%@632,8 nm
Protective chamfers <0,35 mm at 45°
Surface quality 40-20 S-D
Surface irregularity <λ/8@632,8 nm
Coatings Uncoated, available upon request
Order your item
Material Diameter Edge thickness Focal length SKU PRICE QUANTITY
UVFS
⌀25,4 mm
2 mm
25 mm
7565
72 €
UVFS
⌀25,4 mm
2 mm
50 mm
7566
72 €
UVFS
⌀25,4 mm
2 mm
75 mm
7567
72 €
UVFS
⌀25,4 mm
2 mm
100 mm
7568
72 €
BK7
⌀25,4 mm
2 mm
25 mm
7569
28 €
BK7
⌀25,4 mm
2 mm
50 mm
7570
28 €
BK7
⌀25,4 mm
2 mm
75 mm
7571
28 €
BK7
⌀25,4 mm
2 mm
100 mm
7572
28 €