Quality planoconcave cylindrical lenses (visible/UV)
Description
Cylindrical lenses focus or diverge light in one plane only. Our circular lenses are particularly convenient for mounting; the longer-focus lenses are simply cut to a circular shape, whilst the stronger lenses are mounted in a recess on a black anodised aluminium disc. B270 optical crown lenses are offered for the visible and near IR, and fused silica for the UV; both are also available multilayer AR coated to improve transmittance.
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Length, width |
+0, -0.25mm |
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Diameter |
+0, -0.15mm |
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Focal length |
±2.5% |
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Thickness |
1.5mm (thinnest point) |
|
Scratch-dig |
|
|
Centration |
0.25mm (FL<50mm) |
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Wedge |
4mrad (along axis) |
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Material data |
|
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AR coating: |
multilayer |
Spherical aberration calculation
To calculate the spherical aberration of a system and evaluate its effect proceed as follows.
1. Calculate element contributions
For each lens element work out the wavefront aberration A:
A = ky4/f3
where y is the semi-aperture, or maximum ray height at the element (from an on-axis object); f is the element focal length, and the coefficient k depends on material, shape and conjugates and is given in the relevant section of this catalogue.
2. Sum contributions
Simply add the contributions algebraically to give the total wavefront aberration ΣA (deviation from the best-fit sphere).
3. Evaluate effect
If ΣA is less than λ/4 the system is diffraction limited and aberration can usually be neglected. For larger aberration, the geometrical spot diameter D is given by:
D = 8 ΣAv/y
where y is as above, for the last element, and v is the distance from this element to the image.
For further detail request our Technical Note ‘Spherical aberration’.
| Item code | Focal length (mm) | Length x width (mm) | Back FL (mm) | Centre thickness (mm) | Material | Form | Coating type | Price per item (£ GBP) |
Stock available | Volume discount available |
Datasheets & customisation options |
Select amount |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 63 UU 40 | 63 | 40 x 25 | 64 | 1.5 | UV-silica | Rectangular | AR coated 248-400nm | £216.35 | ||||
| 10 UQ 16 | 10 | 16 x 6.3 | 11 | 2.6 | B270 crown | Rectangular | Uncoated | £47.67 | ||||
| 10 UB 16 | 10 | 16 x 6.3 | 11 | 2.6 | B270 crown | Rectangular | AR coated 450-900nm | £67.16 | ||||
| 16 UB 25 | 16 | 25 x 10 | 17 | 3.2 | B270 crown | Rectangular | AR coated 450-900nm | £67.16 | ||||
| 25 UB 25 | 25 | 25 x 16 | 26 | 4.3 | B270 crown | Rectangular | AR coated 450-900nm | £73.93 | ||||
| 40 UB 40 | 40 | 40 x 25 | 41 | 5.7 | B270 crown | Rectangular | AR coated 450-900nm | £90.87 | ||||
| 16 UQ 25 | 16 | 25 x 10 | 17 | 3.2 | B270 crown | Rectangular | Uncoated | TBA | Send us a stock query | |||
| 25 UQ 25 | 25 | 25 x 16 | 26 | 4.3 | B270 crown | Rectangular | Uncoated | £49.37 | ||||
| 40 UQ 40 | 40 | 40 x 25 | 41 | 5.7 | B270 crown | Rectangular | Uncoated | £66.31 | ||||
| 63 UQ 40 | 63 | 40 x 25 | 64 | 4 | B270 crown | Rectangular | Uncoated | TBA | Send us a stock query | |||
| 16 US 25 | 16 | 25 x 10 | 17 | 1.5 | UV-silica | Rectangular | Uncoated | £127.53 | ||||
| 25 US 25 | 25 | 25 x 16 | 26 | 1.5 | UV-silica | Rectangular | Uncoated | £136.00 | ||||
| 40 US 40 | 40 | 40 x 25 | 41 | 1.5 | UV-silica | Rectangular | Uncoated | £173.64 | ||||
| 63 US 40 | 63 | 40 x 25 | 64 | 1.5 | UV-silica | Rectangular | Uncoated | £169.64 | ||||
| 16 UU 25 | 16 | 25 x 10 | 17 | 1.5 | UV-silica | Rectangular | AR coated 248-400nm | £158.27 | ||||
| 25 UU 25 | 25 | 25 x 16 | 26 | 1.5 | UV-silica | Rectangular | AR coated 248-400nm | £165.29 | ||||
| 40 UU 40 | 40 | 40 x 25 | 41 | 1.5 | UV-silica | Rectangular | AR coated 248-400nm | £218.53 | ||||
| 63 UB 40 | 63 | 40 x 25 | 64 | 4 | B270 crown | Rectangular | AR coated 450-900nm | TBA | Send us a stock query | |||
For more information regarding stock availability icons, please see our shipping page.
