N-BK7, BiConcave Lenses (AR 400-700nm)

SLB-B-N-M

N-BK7, BiConcave Lenses (AR 400-700nm)
In stock
SKU
SLB-B-N-M
These biconcave lenses are Coated 400-700nm.They are used when a very high negative power is required. They can be used in a multi-element system or alone to produce a diverging cone of virtual image.
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Name Diameter φD Focal length Delivery Price Add to cart
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Biconcave Lens 50.8mm Diameter −59.5mm Focal Length 400 - 700nm
SLB-50.8B-60NM
50.8mm −59.5mm
in stock
$155.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ50.8mm
Focal length f −59.5mm
Edge thickness te 13.8mm
Center thickness tc 3mm
Back focal length fb −60.5mm
Radius of curvature r 62.28mm
Centration <1′
i
Biconcave Lens 25mm Diameter −24.7mm Focal Length 400 - 700nm
SLB-25B-25NM
25mm −24.7mm
2 weeks
$112.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25mm
Focal length f −24.7mm
Edge thickness te 8.4mm
Center thickness tc 2mm
Back focal length fb −25.3mm
Radius of curvature r 25.95mm
Centration <1′
i
Biconcave Lens 50.8mm Diameter −199.5mm Focal Length 400 - 700nm
SLB-50.8B-200NM
50.8mm −199.5mm
in stock
$141.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ50.8mm
Focal length f −199.5mm
Edge thickness te 6.1mm
Center thickness tc 3mm
Back focal length fb −200.5mm
Radius of curvature r 207.6mm
Centration <1′
i
Biconcave Lens 25mm Diameter −39.7mm Focal Length 400 - 700nm
SLB-25B-40NM
25mm −39.7mm
6-12 weeks
$106.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25mm
Focal length f −39.7mm
Edge thickness te 5.9mm
Center thickness tc 2mm
Back focal length fb −40.3mm
Radius of curvature r 41.52mm
Centration <1′
i
Biconcave Lens 25mm Diameter −69.7mm Focal Length 400 - 700nm
SLB-25B-70NM
25mm −69.7mm
2 weeks
$97.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25mm
Focal length f −69.7mm
Edge thickness te 4.2mm
Center thickness tc 2mm
Back focal length fb −70.3mm
Radius of curvature r 72.66mm
Centration <1′
i
Biconcave Lens 25.4mm Diameter −24.7mm Focal Length 400 - 700nm
SLB-25.4B-25NM
25.4mm −24.7mm
6-12 weeks
$112.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25.4mm
Focal length f −24.7mm
Edge thickness te 8.6mm
Center thickness tc 2mm
Back focal length fb −25.4mm
Radius of curvature r 25.95mm
Centration <1′
i
Biconcave Lens 10mm Diameter −19.7mm Focal Length 400 - 700nm
SLB-10B-20NM
10mm −19.7mm
in stock
$72.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ10mm
Focal length f −19.7mm
Edge thickness te 3.2mm
Center thickness tc 2mm
Back focal length fb −20.3mm
Radius of curvature r 20.76mm
Centration <1′
i
Biconcave Lens 25.4mm Diameter −49.7mm Focal Length 400 - 700nm
SLB-25.4B-50NM
25.4mm −49.7mm
6-12 weeks
$104.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25.4mm
Focal length f −49.7mm
Edge thickness te 5.2mm
Center thickness tc 2mm
Back focal length fb −50.4mm
Radius of curvature r 51.9mm
Centration <1′
i
Biconcave Lens 10mm Diameter −39.7mm Focal Length 400 - 700nm
SLB-10B-40NM
10mm −39.7mm
2 weeks
$70.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ10mm
Focal length f −39.7mm
Edge thickness te 2.6mm
Center thickness tc 2mm
Back focal length fb −40.3mm
Radius of curvature r 41.52mm
Centration <1′
i
Biconcave Lens 25.4mm Diameter −79.7mm Focal Length 400 - 700nm
SLB-25.4B-80NM
25.4mm −79.7mm
in stock
$94.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25.4mm
Focal length f −79.7mm
Edge thickness te 4mm
Center thickness tc 2mm
Back focal length fb −80.4mm
Radius of curvature r 83.04mm
Centration <1′
i
Biconcave Lens 12.7mm Diameter −14.7mm Focal Length 400 - 700nm
SLB-12.7B-15NM
12.7mm −14.7mm
2 weeks
$74.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ12.7mm
Focal length f −14.7mm
Edge thickness te 4.7mm
Center thickness tc 2mm
Back focal length fb −15.3mm
Radius of curvature r 15.57mm
Centration <1′
i
Biconcave Lens 25.4mm Diameter −199.7mm Focal Length 400 - 700nm
SLB-25.4B-200NM
25.4mm −199.7mm
6-12 weeks
$88.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25.4mm
Focal length f −199.7mm
Edge thickness te 2.8mm
Center thickness tc 2mm
Back focal length fb −200.4mm
Radius of curvature r 207.6mm
Centration <1′
i
Biconcave Lens 15mm Diameter −14.7mm Focal Length 400 - 700nm
SLB-15B-15NM
15mm −14.7mm
in stock
$82.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ15mm
Focal length f −14.7mm
Edge thickness te 5.9mm
Center thickness tc 2mm
Back focal length fb −15.3mm
Radius of curvature r 15.57mm
Centration <1′
i
Biconcave Lens 30mm Diameter −39.7mm Focal Length 400 - 700nm
SLB-30B-40NM
30mm −39.7mm
6-12 weeks
$116.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ30mm
Focal length f −39.7mm
Edge thickness te 7.6mm
Center thickness tc 2mm
Back focal length fb −40.3mm
Radius of curvature r 41.52mm
Centration <1′
i
Biconcave Lens 40mm Diameter −39.7mm Focal Length 400 - 700nm
SLB-40B-40NM
40mm −39.7mm
6-12 weeks
$144.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ40mm
Focal length f −39.7mm
Edge thickness te 12.3mm
Center thickness tc 2mm
Back focal length fb −40.3mm
Radius of curvature r 41.52mm
Centration <1′
i
Biconcave Lens 15mm Diameter −29.7mm Focal Length 400 - 700nm
SLB-15B-30NM
15mm −29.7mm
in stock
$79.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ15mm
Focal length f −29.7mm
Edge thickness te 3.8mm
Center thickness tc 2mm
Back focal length fb −30.3mm
Radius of curvature r 31.14mm
Centration <1′
i
Biconcave Lens 50mm Diameter −49.5mm Focal Length 400 - 700nm
SLB-50B-50NM
50mm −49.5mm
6-12 weeks
$162.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ50mm
Focal length f −49.5mm
Edge thickness te 15.8mm
Center thickness tc 3mm
Back focal length fb −50.5mm
Radius of curvature r 51.9mm
Centration <1′
i
Biconcave Lens 20mm Diameter −19.7mm Focal Length 400 - 700nm
SLB-20B-20NM
20mm −19.7mm
6-12 weeks
$84.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ20mm
Focal length f −19.7mm
Edge thickness te 7.1mm
Center thickness tc 2mm
Back focal length fb −20.3mm
Radius of curvature r 20.76mm
Centration <1′
i
Biconcave Lens 50mm Diameter −99.5mm Focal Length 400 - 700nm
SLB-50B-100NM
50mm −99.5mm
6-12 weeks
$141.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ50mm
Focal length f −99.5mm
Edge thickness te 9.1mm
Center thickness tc 3mm
Back focal length fb −100.5mm
Radius of curvature r 103.8mm
Centration <1′
i
Biconcave Lens 20mm Diameter −39.7mm Focal Length 400 - 700nm
SLB-20B-40NM
20mm −39.7mm
in stock
$83.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ20mm
Focal length f −39.7mm
Edge thickness te 4.4mm
Center thickness tc 2mm
Back focal length fb −40.3mm
Radius of curvature r 41.52mm
Centration <1′
i
Biconcave Lens 50.8mm Diameter −99.5mm Focal Length 400 - 700nm
SLB-50.8B-100NM
50.8mm −99.5mm
in stock
$141.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ50.8mm
Focal length f −99.5mm
Edge thickness te 9.3mm
Center thickness tc 3mm
Back focal length fb −100.5mm
Radius of curvature r 103.8mm
Centration <1′
i
Biconcave Lens 25mm Diameter −29.7mm Focal Length 400 - 700nm
SLB-25B-30NM
25mm −29.7mm
in stock
$111.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25mm
Focal length f −29.7mm
Edge thickness te 7.2mm
Center thickness tc 2mm
Back focal length fb −30.3mm
Radius of curvature r 31.14mm
Centration <1′
i
Biconcave Lens 50.8mm Diameter −249.5mm Focal Length 400 - 700nm
SLB-50.8B-250NM
50.8mm −249.5mm
in stock
$141.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ50.8mm
Focal length f −249.5mm
Edge thickness te 5.5mm
Center thickness tc 3mm
Back focal length fb −250.5mm
Radius of curvature r 259.5mm
Centration <1′
i
Biconcave Lens 25mm Diameter −49.7mm Focal Length 400 - 700nm
SLB-25B-50NM
25mm −49.7mm
in stock
$104.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25mm
Focal length f −49.7mm
Edge thickness te 5.1mm
Center thickness tc 2mm
Back focal length fb −50.3mm
Radius of curvature r 51.9mm
Centration <1′
i
Biconcave Lens 25mm Diameter −79.7mm Focal Length 400 - 700nm
SLB-25B-80NM
25mm −79.7mm
6-12 weeks
$94.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25mm
Focal length f −79.7mm
Edge thickness te 4mm
Center thickness tc 2mm
Back focal length fb −80.3mm
Radius of curvature r 83.04mm
Centration <1′
i
Biconcave Lens 10mm Diameter −9.7mm Focal Length 400 - 700nm
SLB-10B-10NM
10mm −9.7mm
6-12 weeks
$76.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ10mm
Focal length f −9.7mm
Edge thickness te 4.6mm
Center thickness tc 2mm
Back focal length fb −10.3mm
Radius of curvature r 10.38mm
Centration <1′
i
Biconcave Lens 25.4mm Diameter −29.7mm Focal Length 400 - 700nm
SLB-25.4B-30NM
25.4mm −29.7mm
in stock
$111.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25.4mm
Focal length f −29.7mm
Edge thickness te 7.4mm
Center thickness tc 2mm
Back focal length fb −30.4mm
Radius of curvature r 31.14mm
Centration <1′
i
Biconcave Lens 10mm Diameter −24.7mm Focal Length 400 - 700nm
SLB-10B-25NM
10mm −24.7mm
6-12 weeks
$72.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ10mm
Focal length f −24.7mm
Edge thickness te 3mm
Center thickness tc 2mm
Back focal length fb −25.3mm
Radius of curvature r 25.95mm
Centration <1′
i
Biconcave Lens 25.4mm Diameter −59.7mm Focal Length 400 - 700nm
SLB-25.4B-60NM
25.4mm −59.7mm
in stock
$100.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25.4mm
Focal length f −59.7mm
Edge thickness te 4.6mm
Center thickness tc 2mm
Back focal length fb −60.4mm
Radius of curvature r 62.28mm
Centration <1′
i
Biconcave Lens 10mm Diameter −49.7mm Focal Length 400 - 700nm
SLB-10B-50NM
10mm −49.7mm
6-12 weeks
$68.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ10mm
Focal length f −49.7mm
Edge thickness te 2.5mm
Center thickness tc 2mm
Back focal length fb −50.3mm
Radius of curvature r 51.9mm
Centration <1′
i
Biconcave Lens 25.4mm Diameter −99.7mm Focal Length 400 - 700nm
SLB-25.4B-100NM
25.4mm −99.7mm
in stock
$88.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ25.4mm
Focal length f −99.7mm
Edge thickness te 3.6mm
Center thickness tc 2mm
Back focal length fb −100.4mm
Radius of curvature r 103.8mm
Centration <1′
i
Biconcave Lens 12.7mm Diameter −19.7mm Focal Length 400 - 700nm
SLB-12.7B-20NM
12.7mm −19.7mm
6-12 weeks
$72.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ12.7mm
Focal length f −19.7mm
Edge thickness te 4mm
Center thickness tc 2mm
Back focal length fb −20.3mm
Radius of curvature r 20.76mm
Centration <1′
i
Biconcave Lens 30mm Diameter −29.7mm Focal Length 400 - 700nm
SLB-30B-30NM
30mm −29.7mm
2 weeks
$126.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ30mm
Focal length f −29.7mm
Edge thickness te 9.7mm
Center thickness tc 2mm
Back focal length fb −30.3mm
Radius of curvature r 31.14mm
Centration <1′
i
Biconcave Lens 15mm Diameter −19.7mm Focal Length 400 - 700nm
SLB-15B-20NM
15mm −19.7mm
2 weeks
$81.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ15mm
Focal length f −19.7mm
Edge thickness te 4.8mm
Center thickness tc 2mm
Back focal length fb −20.3mm
Radius of curvature r 20.76mm
Centration <1′
i
Biconcave Lens 30mm Diameter −49.7mm Focal Length 400 - 700nm
SLB-30B-50NM
30mm −49.7mm
6-12 weeks
$112.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ30mm
Focal length f −49.7mm
Edge thickness te 6.4mm
Center thickness tc 2mm
Back focal length fb −50.3mm
Radius of curvature r 51.9mm
Centration <1′
i
Biconcave Lens 40mm Diameter −49.7mm Focal Length 400 - 700nm
SLB-40B-50NM
40mm −49.7mm
2 weeks
$134.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Broadband Multilayer antireflection coating (400 - 700nm)
Transmmittance > Average 99%
Laser Damage Threshold