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

Main features

 

  • Standard lenses are made from laser UVFS or BK7 glass material, other materials are also available
  • Lenses are available in standard ⌀25,4 mm diameter or custom
  • Anti-reflective coatings on demand

 

Application examples

 

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

Bi-convex spherical lenses are optical components in which both surfaces are convex and have the same radius of curvature. These lenses are similar to plano-convex lenses due to positive focal length and ability to collimate, collect and focus light. The best performance of bi-convex lenses is achieved when used for equidistance imaging (1:1) or close-to applications. Due to symmetrical design spherical aberrations, chromatic aberrations, coma and distortion are minimized. 4Lasers offer various focal length bi-convex spherical lenses made from borosilicate crown glass BK7 and UV grade fused silica. In order to achieve optimized transmission ratio anti-reflection coatings are generally applied on to the lens input and exit faces.

Bi-convex spherical lenses
Design wavelength 546,1 nm
Focal length tolerance ±3%
Clear aperture >90%
Diameter tolerance +0/-0,1 mm
Thickness tolerance ±0,5 mm
Centration erorr <3 arcmin
Protective chamfers <0,35 mm at 45°
Coatings Uncoated, available
Surface quality 40-20 S-D
Surface irregularity <λ/[email protected],8 nm
Order your item
Material Diameter Edge thickness Center thickness Focal length ROC SKU price quantity
UVFS
⌀25,4 mm
2 mm
7,4 mm
35 mm
30,99 mm
7565
Request
UVFS
⌀25,4 mm
2 mm
5,7 mm
50 mm
45,1 mm
7566
Request
UVFS
⌀25,4 mm
2 mm
4,4 mm
75 mm
68,32 mm
7567
Request
UVFS
⌀25,4 mm
2 mm
3,8 mm
100 mm
91,42 mm
7568
Request
BK7
⌀25,4 mm
2 mm
6,8 mm
35 mm
35,09 mm
7569
Request
BK7
⌀25,4 mm
2 mm
5,2 mm
50 mm
50,92 mm
7570
Request
BK7
⌀25,4 mm
2 mm
4,1 mm
75 mm
77,04 mm
7571
Request
BK7
⌀25,4 mm
2 mm
3,6 mm
100 mm
103,05 mm
7572
Request