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
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- 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 | |
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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 €
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