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BK7, BiConcave Lenses (AR 400 - 1600nm)

SLB-B-N-BB

BK7, BiConcave Lenses (AR 400 - 1600nm)
In stock
SKU
SLB-B-N-BB
This is a BK7 lens with a multi-layer anti-reflection coating for the visible to near-infrared range (400-1600 nm).
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Diameter φD
Focal length
Material
Delivery Price Add to cart
details
SLB-25.4B-50NBB
25.4mm −49.7mm BK7
4-6 weeks
€95.70
Lens Type Biconcave Lens
Design wavelength 546.1 nm
Refractive index ne=1.519
Coating Broadband Multilayer antireflection coating ( 400 - 1600 nm )
Wavelength range of Antireflection Coating 400～1600 nm
Transmittance > Average 96.5%
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20−10
Edge thickness te 5.2 mm
Center thickness tc 2 mm
Back focal length fb -50.4 mm
Radius of curvature r 51.9 mm
Centration ＜1′
Laser Damage Threshold 3 J/cm2 ( Laser pulse width ; 10ns , Repetition frequency ; 20Hz )
details
SLB-30B-100NBB
30mm −99.7mm BK7
4-6 weeks
€82.96
Lens Type Biconcave Lens
Design wavelength 546.1 nm
Refractive index ne=1.519
Coating Broadband Multilayer antireflection coating ( 400 - 1600 nm )
Wavelength range of Antireflection Coating 400～1600 nm
Transmittance > Average 96.5%
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20−10
Edge thickness te 4.2 mm
Center thickness tc 2 mm
Back focal length fb -100.3 mm
Radius of curvature r 103.8 mm
Centration ＜1′
Laser Damage Threshold 3 J/cm2 ( Laser pulse width ; 10ns , Repetition frequency ; 20Hz )
details
SLB-12.7B-25NBB
12.7mm −24.7mm BK7
4-6 weeks
€76.82
Lens Type Biconcave Lens
Design wavelength 546.1 nm
Refractive index ne=1.519
Coating Broadband Multilayer antireflection coating ( 400 - 1600 nm )
Wavelength range of Antireflection Coating 400～1600 nm
Transmittance > Average 96.5%
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20−10
Edge thickness te 3.6 mm
Center thickness tc 2 mm
Back focal length fb -25.3 mm
Radius of curvature r 25.95 mm
Centration ＜1′
Laser Damage Threshold 3 J/cm2 ( Laser pulse width ; 10ns , Repetition frequency ; 20Hz )
details
SLB-30B-50NBB
30mm −49.7mm BK7
4-6 weeks
€100.41
Lens Type Biconcave Lens
Design wavelength 546.1 nm
Refractive index ne=1.519
Coating Broadband Multilayer antireflection coating ( 400 - 1600 nm )
Wavelength range of Antireflection Coating 400～1600 nm
Transmittance > Average 96.5%
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20−10
Edge thickness te 6.4 mm
Center thickness tc 2 mm
Back focal length fb -50.3 mm
Radius of curvature r 51.9 mm
Centration ＜1′
Laser Damage Threshold 3 J/cm2 ( Laser pulse width ; 10ns , Repetition frequency ; 20Hz )
details
SLB-25.4B-100NBB
25.4mm −99.7mm BK7
4-6 weeks
€83.91
Lens Type Biconcave Lens
Design wavelength 546.1 nm
Refractive index ne=1.519
Coating Broadband Multilayer antireflection coating ( 400 - 1600 nm )
Wavelength range of Antireflection Coating 400～1600 nm
Transmittance > Average 96.5%
Clear aperture 85% of the diameter
Surface Quality (Scratch-Dig) 20−10
Edge thickness te 3.6 mm
Center thickness tc 2 mm
Back focal length fb -100.4 mm
Radius of curvature r 103.8 mm
Centration ＜1′
Laser Damage Threshold 3 J/cm2 ( Laser pulse width ; 10ns , Repetition frequency ; 20Hz )

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