Basket
0 items - £0.00

Quality biconvex lenses

Description

These crown glass biconvex lenses are suitable for almost all singlet lens applications. The biconvex form is preferred when the conjugates are roughly equal; for focusing collimated light see our range of planoconvex lenses. Most lenses are also stocked in three different AR coatings covering from the visible out to telecoms IR wavelengths. Note special care is taken with the 630-1100nm coating to ensure good performance at 1064nm.

These lenses can readily and quickly be supplied edged to your particular requirements if standard diameters do not suit. Simply click on the 'Modify' button and enter the size you require on the web form. We will get back to you very quickly to confirm your needs and can normally provide the edged lens within 5 working days.

Diameter

+0, -0.1 (≤63mm)
+0, -0.15mm (>63mm)

Focal length (at 587mm)

±0.2mm (<10mm)
±2% (10-1000mm)
±5% (>1000mm)

Scratch-dig

40-20 See specifications for details

Centration

0.1mm (FL≤40mm)
2.5mrad (FL>40mm)

Centre thickness

±0.35mm

Edge thickness

  Lens dia. 2.5mm

0.75mm

  Lens dia. 4mm

1.0mm

  Lens dia. ≥6.3mm

1.5mm

Material data

See optical materials for details

Coating performance

See below

We give below typical reflectance (per surface) performance for our coated singlet lenses. Two typical curves are shown for each coating. Curve 2 applies only to convex surfaces of short radius (R greater than 1.33 x dia.) and Curve 1 to all other surfaces.

Optical coatings table

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 ƩA (deviation from the best-fit sphere).

3. Evaluate effect

If ƩA 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 ƩAv/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’.

Optical coatings table

  • Mounting  (lenses up to 50mm dia.)
  • Special AR coating
  • Edging to smaller diameters

For more details of your modification needs please enquire.

Uncoated biconvex lenses:
01 VQ 00 - 10mm set (5 lenses)
02 VQ 00 -
16mm set (5 lenses)
03 VQ 00 - 25mm set (7 lenses)
04 VQ 00 - 40mm set (4 lenses)

 
Click here to filter results
Clear filters
Item code Coating typeFocal length (mm)Diameter (mm)Back FL (mm)Centre thickness (mm) Glass type Price per item
(£ GBP)
Stock available Volume
discount
available
Datasheets &
customisation
options
Select amount
10 VK 10 AR coated 1100-1600nm10108.54.3BK7 £29.04
 
 
 
 
 
25 VK 25 AR coated 1100-1600nm252522.18.4BK7 £37.18
 
 
 
 
 
32 VK 16 AR coated 1100-1600nm31.51630.33.5BK7 £31.90
 
 
 
 
 
32 VK 25 AR coated 1100-1600nm31.52529.26.7BK7 £37.18
 
 
 
 
 
40 VK 16 AR coated 1100-1600nm401638.13.1BK7 £31.90
 
 
 
 
 
40 VK 25 AR coated 1100-1600nm402538.15.5BK7 £36.30
 
 
 
 
 
40 VK 40 AR coated 1100-1600nm404035.612.5BK7 £46.64
 
 
 
 
 
50 VK 25 AR coated 1100-1600nm502548.54.6BK7 £34.65
 
 
 
 
 
50 VK 40 AR coated 1100-1600nm504046.69.9BK7 £46.09
 
 
 
 
 
63 VK 25 AR coated 1100-1600nm632561.73.9BK7 £34.65
 
 
 
 
 
63 VK 40 AR coated 1100-1600nm634060.37.9BK7 £43.34
 
 
 
 
 
25 VK 16 AR coated 1100-1600nm251623.64.1BK7 £31.90
 
 
 
 
 
40 VQ 16 Uncoated401638.13.1BK7 £18.48
 
 
 
 
 
10 VK 06 AR coated 1100-1600nm106.39.12.5BK7 £26.73
 
 
 
 
 
08 VK 06 AR coated 1100-1600nm86.372.8BK7 £27.50
 
 
 
 
 
06 VK 06 AR coated 1100-1600nm6.36.35.13.3BK7 £28.38
 
 
 
 
 
80 VQ 25 Uncoated802578.93.4BK7 £20.90
 
 
 
 
 
63 VQ 40 Uncoated634060.37.9BK7 £25.52
 
 
 
 
 
63 VQ 25 Uncoated632561.73.9BK7 £20.90
 
 
 
 
 
50 VQ 40 Uncoated504046.69.9BK7 £26.40
 
 
 
 
 
50 VQ 25 Uncoated502548.54.6BK7 £20.90
 
 
 
 
 
40 VQ 40 Uncoated404035.612.5BK7 £27.17
 
 
 
 
 
40 VQ 25 Uncoated402538.15.5BK7 £22.44
 
 
 
 
 
80 VK 25 AR coated 1100-1600nm802578.93.4BK7 £34.65
 
 
 
 
 
100 VB 40 AR coated 450-900nm1004098.15.4BK7 £41.91
 
 
 
 
 
25 VB 16 AR coated 450-900nm251623.64.1BK7 £31.35
 
 
 
 
 
20 VB 16 AR coated 450-900nm201618.34.9BK7 £32.45
 
 
 
 
 
16 VB 16 AR coated 450-900nm161613.96BK7 TBA
 
 
 
 
 
Send us a stock query
25 VB 10 AR coated 450-900nm251024.22.5BK7 £26.84
 
 
 
 
 
20 VB 10 AR coated 450-900nm201019.12.8BK7 £26.84
 
 
 
 
 
16 VB 10 AR coated 450-900nm161014.93.1BK7 £26.84
 
 
 
 
 
12 VB 10 AR coated 450-900nm12.51011.23.6BK7 £27.39
 
 
 
 
 
10 VB 10 AR coated 450-900nm10108.54.3BK7 £28.27
 
 
 
 
 
10 VB 06 AR coated 450-900nm106.39.12.5BK7 TBA
 
 
 
 
 
Send us a stock query
08 VB 06 AR coated 450-900nm86.372.8BK7 £26.73
 
 
 
 
 
32 VB 16 AR coated 450-900nm31.51630.33.5BK7 TBA
 
 
 
 
 
Send us a stock query
40 VB 16 AR coated 450-900nm401638.13.1BK7 £31.35
 
 
 
 
 
63 VB 40 AR coated 450-900nm634060.37.9BK7 £41.91
 
 
 
 
 
50 VB 40 AR coated 450-900nm504046.69.9BK7 £44.33
 
 
 
 
 
40 VB 40 AR coated 450-900nm404035.612.5BK7 £45.10
 
 
 
 
 
100 VB 25 AR coated 450-900nm10025993BK7 £33.88
 
 
 
 
 
80 VB 25 AR coated 450-900nm802578.93.4BK7 £33.88
 
 
 
 
 
63 VB 25 AR coated 450-900nm632561.73.9BK7 £33.88
 
 
 
 
 
50 VB 25 AR coated 450-900nm502548.54.6BK7 £33.88
 
 
 
 
 
40 VB 25 AR coated 450-900nm402538.15.5BK7 £35.31
 
 
 
 
 
32 VB 25 AR coated 450-900nm31.52529.26.7BK7 TBA
 
 
 
 
 
Send us a stock query
25 VB 25 AR coated 450-900nm252522.18.4BK7 £36.19
 
 
 
 
 
06 VB 06 AR coated 450-900nm6.36.35.13.3BK7 £27.61
 
 
 
 
 
32 VQ 25 Uncoated31.52529.26.7BK7 TBA
 
 
 
 
 
Send us a stock query
10 VQ 06 Uncoated106.39.12.5BK7 £15.29
 
 
 
 
 
08 VQ 06 Uncoated86.372.8BK7 £15.29
 
 
 
 
 
06 VQ 06 Uncoated6.36.35.13.3BK7 £16.17
 
 
 
 
 
80 VI 25 AR coated 630-1100nm802578.93.4BK7 £33.88
 
 
 
 
 
63 VI 40 AR coated 630-1100nm634060.37.9BK7 £41.91
 
 
 
 
 
63 VI 25 AR coated 630-1100nm632561.73.9BK7 £33.88
 
 
 
 
 
50 VI 40 AR coated 630-1100nm504046.69.9BK7 £44.33
 
 
 
 
 
50 VI 25 AR coated 630-1100nm502548.54.6BK7 £33.88
 
 
 
 
 
40 VI 40 AR coated 630-1100nm404035.612.5BK7 £45.10
 
 
 
 
 
40 VI 25 AR coated 630-1100nm402538.15.5BK7 £35.31
 
 
 
 
 
10 VQ 10 Uncoated10108.54.3BK7 TBA
 
 
 
 
 
Send us a stock query
100 VQ 25 Uncoated10025993BK7 £20.90
 
 
 
 
 
32 VQ 16 Uncoated31.51630.33.5BK7 £18.48
 
 
 
 
 
25 VQ 25 Uncoated252522.18.4BK7 £22.44
 
 
 
 
 
25 VQ 16 Uncoated251623.64.1BK7 £18.48
 
 
 
 
 
25 VQ 10 Uncoated251024.22.5BK7 £15.29
 
 
 
 
 
20 VQ 16 Uncoated201618.34.9BK7 £19.14
 
 
 
 
 
20 VQ 10 Uncoated201019.12.8BK7 £15.29
 
 
 
 
 
16 VQ 16 Uncoated161613.96BK7 £19.91
 
 
 
 
 
16 VQ 10 Uncoated161014.93.1BK7 TBA
 
 
 
 
 
Send us a stock query
12 VQ 10 Uncoated12.51011.23.6BK7 £15.29
 
 
 
 
 
100 VQ 40 Uncoated1004098.15.4BK7 £25.52
 
 
 
 
 
40 VI 16 AR coated 630-1100nm401638.13.1BK7 £31.35
 
 
 
 
 
32 VI 25 AR coated 630-1100nm31.52529.26.7BK7 TBA
 
 
 
 
 
Send us a stock query
10 VI 06 AR coated 630-1100nm106.39.12.5BK7 £26.18
 
 
 
 
 
08 VI 06 AR coated 630-1100nm86.372.8BK7 £26.73
 
 
 
 
 
06 VI 06 AR coated 630-1100nm6.36.35.13.3BK7 £27.61
 
 
 
 
 
25 VK 10 AR coated 1100-1600nm251024.22.5BK7 £27.39
 
 
 
 
 
20 VK 16 AR coated 1100-1600nm201618.34.9BK7 £33.22
 
 
 
 
 
20 VK 10 AR coated 1100-1600nm201019.12.8BK7 £27.39
 
 
 
 
 
16 VK 16 AR coated 1100-1600nm161613.96BK7 £33.99
 
 
 
 
 
16 VK 10 AR coated 1100-1600nm161014.93.1BK7 £27.39
 
 
 
 
 
12 VK 10 AR coated 1100-1600nm12.51011.23.6BK7 £28.16
 
 
 
 
 
100 VK 40 AR coated 1100-1600nm1004098.15.4BK7 £43.34
 
 
 
 
 
10 VI 10 AR coated 630-1100nm10108.54.3BK7 £28.27
 
 
 
 
 
100 VI 25 AR coated 630-1100nm10025993BK7 £33.88
 
 
 
 
 
32 VI 16 AR coated 630-1100nm31.51630.33.5BK7 £31.35
 
 
 
 
 
25 VI 25 AR coated 630-1100nm252522.18.4BK7 £36.19
 
 
 
 
 
25 VI 16 AR coated 630-1100nm251623.64.1BK7 £31.35
 
 
 
 
 
25 VI 10 AR coated 630-1100nm251024.22.5BK7 £26.84
 
 
 
 
 
20 VI 16 AR coated 630-1100nm201618.34.9BK7 £32.45
 
 
 
 
 
20 VI 10 AR coated 630-1100nm201019.12.8BK7 £26.84
 
 
 
 
 
16 VI 16 AR coated 630-1100nm161613.96BK7 £33.22
 
 
 
 
 
16 VI 10 AR coated 630-1100nm161014.93.1BK7 £26.84
 
 
 
 
 
12 VI 10 AR coated 630-1100nm12.51011.23.6BK7 £27.39
 
 
 
 
 
100 VI 40 AR coated 630-1100nm1004098.15.4BK7 £41.91
 
 
 
 
 
100 VK 25 AR coated 1100-1600nm10025993BK7 £34.65
 
 
 
 
 

For more information regarding stock availability icons, please see our shipping page.