
In stock
SKU
DLB
Achromatic doublets are cemented achromats made of two different lenses (Low dispersion positive from crown glass and high dispersion negative from flint glass). The difference of dispersion and shape of both lenses are designed to minimize the chromatic aberrations in blue (486.1nm), green (546.1nm) and red (656.3nm). Therefore, these lenses are able to support the entire visible wavelength spectrum.

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Name |
Diameter φD
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Focal length
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Delivery | Price | Add to cart | |||||||||||||||||||||||||
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details
DLB-12.7-60PM
|
12.7mm | 60mm |
in stock
|
SGD 93.90
|
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details
DLB-25-120PM
|
25mm | 119.8mm |
in stock
|
SGD 115.20
|
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details
DLB-30-350PM
|
30mm | 350mm |
in stock
|
SGD 125.60
|
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details
DLB-50-600PM
|
50mm | 599.9mm |
1-3 weeks
|
SGD 167.10
|
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details
DLB-12.7-100PM
|
12.7mm | 100.1mm |
in stock
|
SGD 83.50
|
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details
DLB-25-200PM
|
25mm | 200.1mm |
in stock
|
SGD 115.20
|
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details
DLB-30-500PM
|
30mm | 500mm |
in stock
|
SGD 125.60
|
|
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details
DLB-50-1000PM
|
50mm | 1000mm |
1-3 weeks
|
SGD 167.10
|
|
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details
DLB-15-40PM
|
15mm | 40.1mm |
in stock
|
SGD 115.20
|
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details
DLB-25-300PM
|
25mm | 300mm |
1-3 weeks
|
SGD 115.20
|
|
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details
DLB-40-80PM
|
40mm | 80.2mm |
in stock
|
SGD 187.80
|
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details
DLB-50.8-150PM
|
50.8mm | 150.7mm |
in stock
|
SGD 187.80
|
|
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details
DLB-15-70PM
|
15mm | 70.2mm |
in stock
|
SGD 93.90
|
|
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details
DLB-25.4-60PM
|
25.4mm | 60.1mm |
in stock
|
SGD 146.30
|
|
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details
DLB-40-150PM
|
40mm | 150.1mm |
1-3 weeks
|
SGD 156.70
|
|
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details
DLB-50.8-300PM
|
50.8mm | 299.8mm |
1-3 weeks
|
SGD 167.10
|
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details
DLB-20-30PM
|
20mm | 30.6mm |
1-3 weeks
|
SGD 156.70
|
|
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details
DLB-25.4-100PM
|
25.4mm | 100.2mm |
in stock
|
SGD 115.20
|
|
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details
DLB-40-220PM
|
40mm | 220.7mm |
1-3 weeks
|
SGD 146.30
|
|
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details
DLB-50.8-700PM
|
50.8mm | 700mm |
1-3 weeks
|
SGD 167.10
|
|
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details
DLB-20-60PM
|
20mm | 60.2mm |
1-3 weeks
|
SGD 125.60
|
|
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details
DLB-25.4-170PM
|
25.4mm | 170.4mm |
in stock
|
SGD 115.20
|
|
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details
DLB-40-350PM
|
40mm | 349.9mm |
1-3 weeks
|
SGD 146.30
|
|
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details
DLB-60-200PM
|
60mm | 200.3mm |
1-3 weeks
|
- |
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details
DLB-20-100PM
|
20mm | −99.5mm |
in stock
|
SGD 93.90
|
|
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details
DLB-25.4-250PM
|
25.4mm | 250.8mm |
1-3 weeks
|
SGD 115.20
|
|
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details
DLB-40-500PM
|
40mm | 500mm |
1-3 weeks
|
SGD 146.30
|
|
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details
DLB-60-600PM
|
60mm | 597.9mm |
1-3 weeks
|
- |
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details
DLB-10-30PM
|
10mm | 30.1mm |
in stock
|
SGD 88.40
|
|
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details
DLB-20-170PM
|
20mm | 170mm |
in stock
|
SGD 93.90
|
|
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details
DLB-30-60PM
|
30mm | 60.3mm |
in stock
|
SGD 167.10
|
|
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details
DLB-50-120PM
|
50mm | 120.2mm |
in stock
|
SGD 198.20
|
|
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details
DLB-80-300PM
|
80mm | 299.8mm |
1-3 weeks
|
- |
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details
DLB-10-60PM
|
10mm | 60.1mm |
in stock
|
SGD 73.20
|
|
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details
DLB-20-250PM
|
20mm | 250mm |
1-3 weeks
|
SGD 93.90
|
|
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details
DLB-30-100PM
|
30mm | 100.7mm |
in stock
|
SGD 125.60
|
|
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details
DLB-50-200PM
|
50mm | 200.1mm |
in stock
|
SGD 167.10
|
|
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details
DLB-100-200PM
|
100mm | 200.6mm |
1-3 weeks
|
- |
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details
DLB-100-800PM
|
100mm | 799.5mm |
1-3 weeks
|
- |
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details
DLB-10-100PM
|
10mm | 100.5mm |
in stock
|
SGD 73.20
|
|
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details
DLB-25-50PM
|
25mm | 50.1mm |
in stock
|
SGD 156.70
|
|
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details
DLB-30-170PM
|
30mm | 169.9mm |
in stock
|
SGD 125.60
|
|
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details
DLB-50-300PM
|
50mm | −299.5mm |
in stock
|
SGD 167.10
|
|
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details
DLB-12.7-40PM
|
12.7mm | 40.1mm |
in stock
|
SGD 115.20
|
|
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details
DLB-25-80PM
|
25mm | 80mm |
in stock
|
SGD 125.60
|
|
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details
DLB-30-250PM
|
30mm | 249.7mm |
in stock
|
SGD 125.60
|
|
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details
DLB-50-450PM
|
50mm | 451.5mm |
in stock
|
SGD 167.10
|
|
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details
DLB-12.7-70PM
|
12.7mm | 69.9mm |
in stock
|
SGD 93.90
|
|
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details
DLB-25-150PM
|
25mm | 149.6mm |
in stock
|
SGD 115.20
|
|
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details
DLB-30-400PM
|
30mm | 400mm |
1-3 weeks
|
SGD 125.60
|
|
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details
DLB-50-700PM
|
50mm | 700mm |
1-3 weeks
|
SGD 167.10
|
|
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details
DLB-15-25PM
|
15mm | 25.2mm |
in stock
|
SGD 136.00
|
|
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details
DLB-25-220PM
|
25mm | 222mm |
1-3 weeks
|
SGD 115.20
|
|
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details
DLB-40-60PM
|
40mm | 60.2mm |
in stock
|
SGD 219.50
|
|
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details
DLB-50.8-100PM
|
50.8mm | 100.5mm |
in stock
|
SGD 208.50
|
|
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details
DLB-15-50PM
|
15mm | 50.1mm |
1-3 weeks
|
SGD 115.20
|
|
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details
DLB-25.4-40PM
|
25.4mm | 40.9mm |
in stock
|
SGD 162.20
|
|
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details
DLB-40-100PM
|
40mm | 99.9mm |
in stock
|
SGD 167.10
|
|
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details
DLB-50.8-200PM
|
50.8mm | 200.1mm |
1-3 weeks
|
SGD 167.10
|
|
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details
DLB-15-80PM
|
15mm | 79.9mm |
in stock
|
SGD 93.90
|
|
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details
DLB-25.4-70PM
|
25.4mm | 69.9mm |
in stock
|
SGD 136.00
|
|
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details
DLB-40-170PM
|
40mm | 169.7mm |
in stock
|
SGD 146.30
|
|
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details
DLB-50.8-400PM
|
50.8mm | 400mm |
1-3 weeks
|
SGD 167.10
|
|
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details
DLB-20-40PM
|
20mm | 40.1mm |
in stock
|
SGD 146.30
|
|
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details
DLB-25.4-120PM
|
25.4mm | 119.8mm |
in stock
|
SGD 115.20
|
|
![]() |
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details
DLB-40-250PM
|
40mm | 249.1mm |
in stock
|
SGD 146.30
|
|
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details
DLB-50.8-1000PM
|
50.8mm | 1000mm |
1-3 weeks
|
SGD 167.10
|
|
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details
DLB-20-70PM
|
20mm | 70.1mm |
in stock
|
SGD 115.20
|
|
![]() |
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details
DLB-25.4-200PM
|
25.4mm | 200.1mm |
in stock
|
SGD 115.20
|
|
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details
DLB-40-400PM
|
40mm | 399.7mm |
in stock
|
SGD 146.30
|
|
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details
DLB-60-250PM
|
60mm | 250mm |
1-3 weeks
|
- |
![]() |
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details
DLB-10-20PM
|
10mm | 20mm |
in stock
|
SGD 93.90
|
|
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details
DLB-20-120PM
|
20mm | 120.3mm |
1-3 weeks
|
SGD 93.90
|
|
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details
DLB-25.4-300PM
|
25.4mm | 300mm |
1-3 weeks
|
SGD 115.20
|
|
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details
DLB-50-80PM
|
50mm | 81mm |
1-3 weeks
|
SGD 240.20
|
|
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details
DLB-80-150PM
|
80mm | −149.7mm |
1-3 weeks
|
- |
![]() |
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details
DLB-10-40PM
|
10mm | 40mm |
in stock
|
SGD 83.50
|
|
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details
DLB-20-200PM
|
20mm | 200.1mm |
in stock
|
SGD 93.90
|
|
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details
DLB-30-70PM
|
30mm | 70.8mm |
1-3 weeks
|
SGD 156.70
|
|
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details
DLB-50-150PM
|
50mm | 150.7mm |
in stock
|
SGD 187.80
|
|
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details
DLB-80-500PM
|
80mm | 502.6mm |
1-3 weeks
|
- |
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details
DLB-10-70PM
|
10mm | 69.9mm |
in stock
|
SGD 73.20
|
|
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details
DLB-20-300PM
|
20mm | 300mm |
in stock
|
SGD 93.90
|
|
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details
DLB-30-120PM
|
30mm | 120.1mm |
in stock
|
SGD 125.60
|
|
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details
DLB-50-220PM
|
50mm | 220.7mm |
in stock
|
SGD 167.10
|
|
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details
DLB-100-300PM
|
100mm | 297.3mm |
1-3 weeks
|
- |
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details
DLB-100-1000PM
|
100mm | 998.1mm |
1-3 weeks
|
- |
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details
DLB-12.7-25PM
|
12.7mm | 25.1mm |
in stock
|
SGD 136.00
|
|
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details
DLB-25-60PM
|
25mm | 60.1mm |
in stock
|
SGD 146.30
|
|
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details
DLB-30-200PM
|
30mm | 200.2mm |
in stock
|
SGD 125.60
|
|
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details
DLB-50-350PM
|
50mm | 350.2mm |
1-3 weeks
|
SGD 167.10
|
|
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details
DLB-12.7-50PM
|
12.7mm | 50.1mm |
in stock
|
SGD 93.90
|
|
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details
DLB-25-100PM
|
25mm | 100.2mm |
in stock
|
SGD 115.20
|
|
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details
DLB-30-300PM
|
30mm | 300.4mm |
in stock
|
SGD 125.60
|
|
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details
DLB-50-500PM
|
50mm | 500.3mm |
in stock
|
SGD 167.10
|
|
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details
DLB-12.7-80PM
|
12.7mm | 79.9mm |
1-3 weeks
|
SGD 93.90
|
|
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details
DLB-25-170PM
|
25mm | 170.4mm |
in stock
|
SGD 115.20
|
|
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details
DLB-30-450PM
|
30mm | 450mm |
1-3 weeks
|
SGD 125.60
|
|
![]() |
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details
DLB-50-800PM
|
50mm | 800mm |
in stock
|
SGD 167.10
|
|
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details
DLB-15-30PM
|
15mm | 30.1mm |
in stock
|
SGD 125.60
|
|
![]() |
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details
DLB-25-250PM
|
25mm | 250.8mm |
1-3 weeks
|
SGD 115.20
|
|
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details
DLB-40-70PM
|
40mm | 70.3mm |
in stock
|
SGD 208.50
|
|
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details
DLB-50.8-120PM
|
50.8mm | 120.2mm |
1-3 weeks
|
SGD 198.20
|
|
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details
DLB-15-60PM
|
15mm | 59.9mm |
in stock
|
SGD 104.30
|
|
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details
DLB-25.4-50PM
|
25.4mm | 50.1mm |
in stock
|
SGD 156.70
|
|
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details
DLB-40-120PM
|
40mm | 120mm |
in stock
|
SGD 156.70
|
|
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details
DLB-50.8-250PM
|
50.8mm | 249.4mm |
1-3 weeks
|
SGD 167.10
|
|
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details
DLB-15-100PM
|
15mm | 100mm |
in stock
|
SGD 83.50
|
|
![]() |
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details
DLB-25.4-80PM
|
25.4mm | 80mm |
in stock
|
SGD 125.60
|
|
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details
DLB-40-200PM
|
40mm | −199.7mm |
in stock
|
SGD 146.30
|
|
![]() |
||||||||||||||||||||||||
details
DLB-50.8-500PM
|
50.8mm | 500.3mm |
1-3 weeks
|
SGD 167.10
|
|
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details
DLB-20-50PM
|
20mm | 50.2mm |
1-3 weeks
|
SGD 136.00
|
|
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details
DLB-25.4-150PM
|
25.4mm | 149.6mm |
1-3 weeks
|
SGD 115.20
|
|
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details
DLB-40-300PM
|
40mm | 300.5mm |
in stock
|
SGD 146.30
|
|
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details
DLB-60-170PM
|
60mm | 170.8mm |
1-3 weeks
|
- |
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details
DLB-20-80PM
|
20mm | 79.9mm |
1-3 weeks
|
SGD 104.30
|
|
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details
DLB-25.4-220PM
|
25.4mm | 222mm |
in stock
|
SGD 115.20
|
|
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details
DLB-40-450PM
|
40mm | 450mm |
in stock
|
SGD 146.30
|
|
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details
DLB-60-500PM
|
60mm | 499.1mm |
1-3 weeks
|
- |
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details
DLB-10-25PM
|
10mm | 25mm |
in stock
|
SGD 93.90
|
|
![]() |
||||||||||||||||||||||||
details
DLB-20-150PM
|
20mm | 149.8mm |
in stock
|
SGD 93.90
|
|
![]() |
||||||||||||||||||||||||
details
DLB-30-50PM
|
30mm | 50.3mm |
in stock
|
SGD 187.80
|
|
![]() |
||||||||||||||||||||||||
details
DLB-50-100PM
|
50mm | 100.5mm |
in stock
|
SGD 208.50
|
|
![]() |
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details
DLB-80-200PM
|
80mm | 200.8mm |
1-3 weeks
|
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DLB-10-50PM
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10mm | 50mm |
in stock
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SGD 78.00
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DLB-20-220PM
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20mm | 220mm |
in stock
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SGD 93.90
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DLB-30-80PM
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30mm | 80.3mm |
1-3 weeks
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SGD 146.30
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DLB-50-170PM
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50mm | 169.8mm |
in stock
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SGD 177.40
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DLB-80-800PM
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80mm | 800.6mm |
1-3 weeks
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DLB-100-500PM
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100mm | 499.6mm |
1-3 weeks
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DLB-10-80PM
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10mm | 80.1mm |
in stock
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SGD 73.20
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DLB-25-40PM
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25mm | 40.9mm |
in stock
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SGD 162.20
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DLB-30-150PM
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30mm | 150mm |
in stock
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SGD 125.60
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DLB-50-250PM
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50mm | 249.4mm |
in stock
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SGD 167.10
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DLB-12.7-30PM
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12.7mm | 30mm |
1-3 weeks
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SGD 115.20
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DLB-25-70PM
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25mm | 69.9mm |
in stock
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SGD 136.00
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DLB-30-220PM
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30mm | 220.2mm |
in stock
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SGD 125.60
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DLB-50-400PM
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50mm | 400mm |
in stock
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SGD 167.10
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You must be logged in to ask questions
◦The spherical aberration of achromatic doublets is better than singlets and minimized at infinite conjugate ratios.
◦Achromatic Doublets are coated on both surfaces with a broadband multi-layer anti-reflection coating for the visible wavelength (400 − 700nm).
◦Set the positive part to the side of the incident parallel beam and put the negative part to the side of the focal point to minimize spherical aberration.
◦The difference in focal length of a lens at each wave length is Chromatic aberration and is due to “dispersion of the glass”, the change in refractive index of glass according to wavelength. This can be corrected by combining glasses with low and high dispersions. Spherical aberration is when a ray enters a lens farther from its optical axis and has a shorter focus than a paraxial focus.
◦Achromatic Doublets are coated on both surfaces with a broadband multi-layer anti-reflection coating for the visible wavelength (400 − 700nm).
◦Set the positive part to the side of the incident parallel beam and put the negative part to the side of the focal point to minimize spherical aberration.
◦The difference in focal length of a lens at each wave length is Chromatic aberration and is due to “dispersion of the glass”, the change in refractive index of glass according to wavelength. This can be corrected by combining glasses with low and high dispersions. Spherical aberration is when a ray enters a lens farther from its optical axis and has a shorter focus than a paraxial focus.