BK7, BiConcave Lenses (AR 400 - 1600nm)

SLB-B-N-BB

BK7, BiConcave Lenses (AR 400 - 1600nm)
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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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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 )
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 )
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 )
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 )
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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