Low Cost Spherical Lens BK7 BiConcave

S-SLB-B-N

Low Cost Spherical Lens BK7 BiConcave
In stock
SKU
S-SLB-B-N
This lower cost product offering of Plano Convex Lenses has only minimal reduction in quality and is perfect for most applications. It can be used in an optical systems such as observation or lighting applications when the higher surface quality Plano BiConvex Lens (SLB-B-P, SLB-B-N) is not required.
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Name Diameter φD Focal length Delivery Price Add to cart
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Reasonable Concave Lens BK7 10mm Diameter -9.7mm Focal Length 750 - 1550nm
S-SLB-10B-10NIR2
10mm −9.7mm
6-12 weeks
$38.76
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Broadband Multilayer antireflection coating (750 - 1550nm)
Transmmittance > Average 98.5%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating 750 - 1550nm
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
i
Reasonable Concave Lens BK7 10mm Diameter -14.7mm Focal Length 633 - 1064nm
S-SLB-15B-15NIR1
10mm −14.7mm
6-12 weeks
$41.82
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Broadband Multilayer antireflection coating (633 - 1064nm)
Transmmittance > Average 98.5%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating 633 - 1064nm
Diameter φD φ10mm
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
i
Reasonable Concave Lens BK7 20mm Diameter -49.7mm Focal Length Uncoated
S-SLB-20B-50N
20mm −49.7mm
6-12 weeks
$23.46
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Uncoated
Clear aperture S-SLB-N : 90% of the diameter
S-SLB-B-N : 85% of the diameter )
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −49.7mm
Edge thickness te 3.9mm
Center thickness tc 2mm
Back focal length fb −50.3mm
Radius of curvature r 51.90mm
i
Reasonable Concave Lens BK7 20mm Diameter -49.7mm Focal Length 400 - 700nm
S-SLB-20B-50NM
20mm −49.7mm
6-12 weeks
$42.33
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
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) 60-40
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ20mm
Focal length f −49.7mm
Edge thickness te 3.9mm
Center thickness tc 2mm
Back focal length fb −50.3mm
Radius of curvature r 51.90mm
i
Reasonable Concave Lens BK7 30mm Diameter -99.7mm Focal Length 750 - 1550nm
S-SLB-30B-100NIR2
30mm −99.7mm
6-12 weeks
$46.41
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Broadband Multilayer antireflection coating (750 - 1550nm)
Transmmittance > Average 98.5%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating 750 - 1550nm
Diameter φD φ30mm
Focal length f −99.7mm
Edge thickness te 4.2mm
Center thickness tc 2mm
Back focal length fb −100.3mm
Radius of curvature r 103.80mm
i
Reasonable Concave Lens BK7 10mm Diameter -9.7mm Focal Length Uncoated
S-SLB-10B-10N
10mm −9.7mm
6-12 weeks
$20.91
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Uncoated
Clear aperture S-SLB-N : 90% of the diameter
S-SLB-B-N : 85% of the diameter )
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating Uncoated
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
i
Reasonable Concave Lens BK7 10mm Diameter -9.7mm Focal Length 400 - 700nm
S-SLB-10B-10NM
10mm −9.7mm
6-12 weeks
$38.76
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
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) 60-40
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
i
Reasonable Concave Lens BK7 10mm Diameter -14.7mm Focal Length 750 - 1550nm
S-SLB-15B-15NIR2
10mm −14.7mm
6-12 weeks
$41.82
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Broadband Multilayer antireflection coating (750 - 1550nm)
Transmmittance > Average 98.5%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating 750 - 1550nm
Diameter φD φ10mm
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
i
Reasonable Concave Lens BK7 20mm Diameter -49.7mm Focal Length 633 - 1064nm
S-SLB-20B-50NIR1
20mm −49.7mm
6-12 weeks
$42.33
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Broadband Multilayer antireflection coating (633 - 1064nm)
Transmmittance > Average 98.5%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating 633 - 1064nm
Diameter φD φ20mm
Focal length f −49.7mm
Edge thickness te 3.9mm
Center thickness tc 2mm
Back focal length fb −50.3mm
Radius of curvature r 51.90mm
i
Reasonable Concave Lens BK7 30mm Diameter -99.7mm Focal Length Uncoated
S-SLB-30B-100N
30mm −99.7mm
6-12 weeks
$22.95
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Uncoated
Clear aperture S-SLB-N : 90% of the diameter
S-SLB-B-N : 85% of the diameter )
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −99.7mm
Edge thickness te 4.2mm
Center thickness tc 2mm
Back focal length fb −100.3mm
Radius of curvature r 103.80mm
i
Reasonable Concave Lens BK7 30mm Diameter -99.7mm Focal Length 400 - 700nm
S-SLB-30B-100NM
30mm −99.7mm
6-12 weeks
$46.41
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
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) 60-40
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ30mm
Focal length f −99.7mm
Edge thickness te 4.2mm
Center thickness tc 2mm
Back focal length fb −100.3mm
Radius of curvature r 103.80mm
i
Reasonable Concave Lens BK7 10mm Diameter -9.7mm Focal Length 633 - 1064nm
S-SLB-10B-10NIR1
10mm −9.7mm
6-12 weeks
$38.76
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Broadband Multilayer antireflection coating (633 - 1064nm)
Transmmittance > Average 98.5%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating 633 - 1064nm
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
i
Reasonable Concave Lens BK7 10mm Diameter -14.7mm Focal Length Uncoated
S-SLB-15B-15N
10mm −14.7mm
6-12 weeks
$23.46
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Uncoated
Clear aperture S-SLB-N : 90% of the diameter
S-SLB-B-N : 85% of the diameter )
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
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
i
Reasonable Concave Lens BK7 10mm Diameter -14.7mm Focal Length 400 - 700nm
S-SLB-15B-15NM
10mm −14.7mm
6-12 weeks
$41.82
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
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) 60-40
Wavelength range of Antireflection Coating 400 - 700nm
Diameter φD φ10mm
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
i
Reasonable Concave Lens BK7 20mm Diameter -49.7mm Focal Length 750 - 1550nm
S-SLB-20B-50NIR2
20mm −49.7mm
6-12 weeks
$42.33
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Broadband Multilayer antireflection coating (750 - 1550nm)
Transmmittance > Average 98.5%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating 750 - 1550nm
Diameter φD φ20mm
Focal length f −49.7mm
Edge thickness te 3.9mm
Center thickness tc 2mm
Back focal length fb −50.3mm
Radius of curvature r 51.90mm
i
Reasonable Concave Lens BK7 30mm Diameter -99.7mm Focal Length 633 - 1064nm
S-SLB-30B-100NIR1
30mm −99.7mm
6-12 weeks
$46.41
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Centration <3′
Coating Broadband Multilayer antireflection coating (633 - 1064nm)
Transmmittance > Average 98.5%
Laser Damage Threshold 4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 60-40
Wavelength range of Antireflection Coating 633 - 1064nm
Diameter φD φ30mm
Focal length f −99.7mm
Edge thickness te 4.2mm
Center thickness tc 2mm
Back focal length fb −100.3mm
Radius of curvature r 103.80mm

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◦It has the same specification of Plano Convex Lens (SLB-B-P or SLB-B-N) except the surface quality and is ideal for experiments and applications where high-precision is not required.
◦There are two types of lens offer, a Plano convex lens with low spherical aberration and a biconvex lens that is used to shorten the focal length.
◦In addition to uncoated products, there are three types of anti-reflection coating for visible, near-infrared, and infrared.

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