BK7, Plano Concave Lenses (AR 400 - 1600nm)

SLB-N-BB

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SKU

SLB-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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details

SLB-12.7-25NBB

12.7mm

BK7

6-12 weeks

£66.76

Focal length f	-25 mm
Lens Type	Plano Concave 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	3.7 mm
Center thickness tc	2 mm
Back focal length fb	-26.3 mm
Radius of curvature r	12.98 mm
Centration	＜1′
Laser Damage Threshold	3 J/cm² ( Laser pulse width ; 10ns , Repetition frequency ; 20Hz )

details

SLB-30-50NBB

30mm

BK7

6-12 weeks

£76.82

Focal length f	-50 mm
Lens Type	Plano Concave Lens
Design wavelength	546.1 nm
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	6.8 mm
Center thickness tc	2 mm
Back focal length fb	-51.3 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-25.4-100NBB

25.4mm

BK7

6-12 weeks

£72.70

Focal length f	-100 mm
Lens Type	Plano Concave 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	-101.3 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-25.4-50NBB

25.4mm

BK7

6-12 weeks

£75.44

Focal length f	-50 mm
Lens Type	Plano Concave 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	5.3 mm
Center thickness tc	2 mm
Back focal length fb	-51.3 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-30-100NBB

30mm

BK7

6-12 weeks

£71.79

Focal length f	-100 mm
Lens Type	Plano Concave 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	-101.3 mm
Radius of curvature r	51.9 mm
Centration	＜1′
Laser Damage Threshold	3 J/cm² ( Laser pulse width ; 10ns , Repetition frequency ; 20Hz )

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