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Sales engineer
Arminas Butkus +370 5 219 4884
Plano-concave spherical lenses
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Plano-concave spherical lenses

Main features

 

  • Fabricated from high-quality UV grade fused silica and BK7 glasses
  • Standard diameters are ⌀12,7 mm and ⌀25,4 mm
  • Focal length selection from -20 mm to -10000 mm
  • Antireflective coatings, custom substrate material, dimensions and focal lengths available upon request

 

Application examples

 

  • Collimating a convergent beam
  • Diverging a collimated beam
  • Relay imaging
Request custom
  • Description
  • Standard specifications

Plano-concave spherical lenses have one plano and one spherical concave surface, while their focal lengths are negative. These lenses provide best performance when used for 5X to infinite-conjugate ratio applications, e.g. collimating a convergent beam, diverging a collimated beam. To prevent spherical aberrations collimated beam should always be incident on curved lens surface and vice versa.

Plano-concave 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/-0,1 mm
Thickness tolerance ±0,5 mm
Centration erorr <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/[email protected],8 nm
Coatings Uncoated, available upon request
Order your item
Material Diameter Center thickness Focal length SKU price quantity
BK7
⌀12,7 mm
2 mm
-25 mm
7507
15 €
BK7
⌀12,7 mm
2 mm
-50 mm
7508
15 €
BK7
⌀12,7 mm
2 mm
-60 mm
7509
15 €
BK7
⌀12,7 mm
2 mm
-75 mm
7510
15 €
BK7
⌀12,7 mm
2 mm
-100 mm
7511
15 €
BK7
⌀12,7 mm
2 mm
-150 mm
7512
15 €
BK7
⌀12,7 mm
2 mm
-200 mm
7513
15 €
BK7
⌀12,7 mm
2 mm
-250 mm
7514
15 €
BK7
⌀12,7 mm
2 mm
-300 mm
7515
15 €
UVFS
⌀12,7 mm
2 mm
-20 mm
7516
32 €
UVFS
⌀12,7 mm
2 mm
-50 mm
7518
32 €
UVFS
⌀12,7 mm
2 mm
-100 mm
7519
32 €
UVFS
⌀12,7 mm
2 mm
-200 mm
7520
32 €
UVFS
⌀12,7 mm
2 mm
-300 mm
7521
32 €
UVFS
⌀12,7 mm
2 mm
-400 mm
7522
32 €
UVFS
⌀12,7 mm
2 mm
-500 mm
7523
32 €
UVFS
⌀12,7 mm
2 mm
-1000 mm
7524
32 €
BK7
⌀25,4 mm
2 mm
-30 mm
7525
19 €
BK7
⌀25,4 mm
2 mm
-50 mm
7526
19 €
BK7
⌀25,4 mm
2 mm
-75 mm
7527
19 €