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N-BK7, Plano Concave Lenses (Uncoated)

SLB-N

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N-BK7, Plano Concave Lenses (Uncoated)
Out of stock
SKU
SLB-N
These simple negative lenses have many uses. Alone they form a virtual image of a distant object
or collimated light source. Used in combination with other optics they reduce the power of the
system. Sharp edges which are common in negative lenses are removed by beveling in order to
reduce the likelihood of chipping.
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Name Diameter φD Focal length Delivery Price Add to cart
i
Plano Concave Lens 25mm Diameter −70mm Focal Length Uncoated
SLB-25-70N 		25mm 70mm
in stock
SGD 43.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −70mm
Edge thickness te 4.2mm
Center thickness tc 2mm
Back focal length fb −71.3mm
Radius of curvature r 36.33mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −250mm Focal Length Uncoated
SLB-30-250N 		30mm 250mm
1-3 weeks
SGD 40.90
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −250mm
Edge thickness te 2.9mm
Center thickness tc 2mm
Back focal length fb −251.3mm
Radius of curvature r 129.75mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −70mm Focal Length Uncoated
SLB-10-70N 		10mm 70mm
in stock
SGD 31.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −70mm
Edge thickness te 2.3mm
Center thickness tc 2mm
Back focal length fb −71.3mm
Radius of curvature r 36.33mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −100mm Focal Length Uncoated
SLB-25-100N 		25mm 100mm
1-3 weeks
SGD 42.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −100mm
Edge thickness te 3.5mm
Center thickness tc 2mm
Back focal length fb −101.3mm
Radius of curvature r 51.9mm
Centration ＜1′
i
Plano Concave Lens 40mm Diameter −70mm Focal Length Uncoated
SLB-40-70N 		40mm 70mm
in stock
SGD 69.50
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ40mm
Focal length f −70mm
Edge thickness te 8mm
Center thickness tc 2mm
Back focal length fb −71.3mm
Radius of curvature r 36.33mm
Centration ＜1′
i
Plano Concave Lens 12.7mm Diameter −15mm Focal Length Uncoated
SLB-12.7-15N 		12.7mm 15mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ12.7mm
Focal length f −15mm
Edge thickness te 5.3mm
Center thickness tc 2mm
Back focal length fb −16.3mm
Radius of curvature r 7.79mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −170mm Focal Length Uncoated
SLB-25-170N 		25mm 170mm
in stock
SGD 42.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −170mm
Edge thickness te 3mm
Center thickness tc 2mm
Back focal length fb −171.3mm
Radius of curvature r 88.23mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −70mm Focal Length Uncoated
SLB-50-70N 		50mm 70mm
in stock
SGD 79.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −70mm
Edge thickness te 13mm
Center thickness tc 3mm
Back focal length fb −72.0mm
Radius of curvature r 36.33mm
Centration ＜1′
i
Plano Concave Lens 12.7mm Diameter −30mm Focal Length Uncoated
SLB-12.7-30N 		12.7mm 30mm
in stock
SGD 31.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ12.7mm
Focal length f −30mm
Edge thickness te 3.4mm
Center thickness tc 2mm
Back focal length fb −31.3mm
Radius of curvature r 15.57mm
Centration ＜1′
i
Plano Concave Lens 15mm Diameter −30mm Focal Length Uncoated
SLB-15-30N 		15mm 30mm
in stock
SGD 34.80
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ15mm
Focal length f −30mm
Edge thickness te 3.9mm
Center thickness tc 2mm
Back focal length fb −31.3mm
Radius of curvature r 15.57mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −40mm Focal Length Uncoated
SLB-25.4-40N 		25.4mm 40mm
in stock
SGD 46.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −40mm
Edge thickness te 6.3mm
Center thickness tc 2mm
Back focal length fb −41.3mm
Radius of curvature r 20.76mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −100mm Focal Length Uncoated
SLB-50-100N 		50mm 100mm
in stock
SGD 72.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −100mm
Edge thickness te 9.4mm
Center thickness tc 3mm
Back focal length fb −102.0mm
Radius of curvature r 51.9mm
Centration ＜1′
i
Plano Concave Lens 15mm Diameter −60mm Focal Length Uncoated
SLB-15-60N 		15mm 60mm
in stock
SGD 34.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ15mm
Focal length f −60mm
Edge thickness te 2.9mm
Center thickness tc 2mm
Back focal length fb −61.3mm
Radius of curvature r 31.14mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −70mm Focal Length Uncoated
SLB-25.4-70N 		25.4mm 70mm
in stock
SGD 43.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −70mm
Edge thickness te 4.3mm
Center thickness tc 2mm
Back focal length fb −71.3mm
Radius of curvature r 36.33mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −170mm Focal Length Uncoated
SLB-50-170N 		50mm 170mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −170mm
Edge thickness te 6.6mm
Center thickness tc 3mm
Back focal length fb −172.0mm
Radius of curvature r 88.23mm
Centration ＜1′
i
Plano Concave Lens 15mm Diameter −100mm Focal Length Uncoated
SLB-15-100N 		15mm 100mm
in stock
SGD 34.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ15mm
Focal length f −100mm
Edge thickness te 2.5mm
Center thickness tc 2mm
Back focal length fb −101.3mm
Radius of curvature r 51.9mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −100mm Focal Length Uncoated
SLB-25.4-100N 		25.4mm 100mm
in stock
SGD 42.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −100mm
Edge thickness te 3.6mm
Center thickness tc 2mm
Back focal length fb −101.3mm
Radius of curvature r 51.9mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −250mm Focal Length Uncoated
SLB-50-250N 		50mm 250mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −250mm
Edge thickness te 5.4mm
Center thickness tc 3mm
Back focal length fb −252.0mm
Radius of curvature r 129.75mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −40mm Focal Length Uncoated
SLB-20-40N 		20mm 40mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −40mm
Edge thickness te 4.6mm
Center thickness tc 2mm
Back focal length fb −41.3mm
Radius of curvature r 20.76mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −100mm Focal Length Uncoated
SLB-10-100N 		10mm 100mm
in stock
SGD 31.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −100mm
Edge thickness te 2.2mm
Center thickness tc 2mm
Back focal length fb −101.3mm
Radius of curvature r 51.9mm
Centration ＜1′
i
Plano Concave Lens 50.8mm Diameter −80mm Focal Length Uncoated
SLB-50.8-80N 		50.8mm 80mm
1-3 weeks
SGD 76.80
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50.8mm
Focal length f −80mm
Edge thickness te 11.7mm
Center thickness tc 3mm
Back focal length fb −82.0mm
Radius of curvature r 41.52mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −70mm Focal Length Uncoated
SLB-20-70N 		20mm 70mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −70mm
Edge thickness te 3.4mm
Center thickness tc 2mm
Back focal length fb −71.3mm
Radius of curvature r 36.33mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −50mm Focal Length Uncoated
SLB-30-50N 		30mm 50mm
in stock
SGD 47.60
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −50mm
Edge thickness te 6.8mm
Center thickness tc 2mm
Back focal length fb −51.3mm
Radius of curvature r 25.95mm
Centration ＜1′
i
Plano Concave Lens 50.8mm Diameter −150mm Focal Length Uncoated
SLB-50.8-150N 		50.8mm 150mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50.8mm
Focal length f −150mm
Edge thickness te 7.3mm
Center thickness tc 3mm
Back focal length fb −152.0mm
Radius of curvature r 77.85mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −100mm Focal Length Uncoated
SLB-20-100N 		20mm 100mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −100mm
Edge thickness te 3mm
Center thickness tc 2mm
Back focal length fb −101.3mm
Radius of curvature r 51.9mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −80mm Focal Length Uncoated
SLB-30-80N 		30mm 80mm
in stock
SGD 43.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −80mm
Edge thickness te 4.8mm
Center thickness tc 2mm
Back focal length fb −81.3mm
Radius of curvature r 41.52mm
Centration ＜1′
i
Plano Concave Lens 50.8mm Diameter −300mm Focal Length Uncoated
SLB-50.8-300N 		50.8mm 300mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50.8mm
Focal length f −300mm
Edge thickness te 5.1mm
Center thickness tc 3mm
Back focal length fb −302.0mm
Radius of curvature r 155.7mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −30mm Focal Length Uncoated
SLB-25-30N 		25mm 30mm
in stock
SGD 47.60
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −30mm
Edge thickness te 8.3mm
Center thickness tc 2mm
Back focal length fb −31.3mm
Radius of curvature r 15.57mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −120mm Focal Length Uncoated
SLB-30-120N 		30mm 120mm
in stock
SGD 40.90
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −120mm
Edge thickness te 3.8mm
Center thickness tc 2mm
Back focal length fb −121.3mm
Radius of curvature r 62.28mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −25mm Focal Length Uncoated
SLB-10-25N 		10mm 25mm
in stock
SGD 34.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −25mm
Edge thickness te 3mm
Center thickness tc 2mm
Back focal length fb −26.3mm
Radius of curvature r 12.98mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −50mm Focal Length Uncoated
SLB-25-50N 		25mm 50mm
in stock
SGD 45.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −50mm
Edge thickness te 5.2mm
Center thickness tc 2mm
Back focal length fb −51.3mm
Radius of curvature r 25.95mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −200mm Focal Length Uncoated
SLB-30-200N 		30mm 200mm
in stock
SGD 40.90
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −200mm
Edge thickness te 3.1mm
Center thickness tc 2mm
Back focal length fb −201.3mm
Radius of curvature r 103.8mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −50mm Focal Length Uncoated
SLB-10-50N 		10mm 50mm
in stock
SGD 31.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −50mm
Edge thickness te 2.5mm
Center thickness tc 2mm
Back focal length fb −51.3mm
Radius of curvature r 25.95mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −80mm Focal Length Uncoated
SLB-25-80N 		25mm 80mm
in stock
SGD 43.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −80mm
Edge thickness te 3.9mm
Center thickness tc 2mm
Back focal length fb −81.3mm
Radius of curvature r 41.52mm
Centration ＜1′
i
Plano Concave Lens 40mm Diameter −50mm Focal Length Uncoated
SLB-40-50N 		40mm 50mm
in stock
SGD 72.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ40mm
Focal length f −50mm
Edge thickness te 11.4mm
Center thickness tc 2mm
Back focal length fb −51.3mm
Radius of curvature r 25.95mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −80mm Focal Length Uncoated
SLB-10-80N 		10mm 80mm
in stock
SGD 31.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −80mm
Edge thickness te 2.3mm
Center thickness tc 2mm
Back focal length fb −81.3mm
Radius of curvature r 41.52mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −120mm Focal Length Uncoated
SLB-25-120N 		25mm 120mm
in stock
SGD 42.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −120mm
Edge thickness te 3.3mm
Center thickness tc 2mm
Back focal length fb −121.3mm
Radius of curvature r 62.28mm
Centration ＜1′
i
Plano Concave Lens 40mm Diameter −80mm Focal Length Uncoated
SLB-40-80N 		40mm 80mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ40mm
Focal length f −80mm
Edge thickness te 7.1mm
Center thickness tc 2mm
Back focal length fb −81.3mm
Radius of curvature r 41.52mm
Centration ＜1′
i
Plano Concave Lens 12.7mm Diameter −20mm Focal Length Uncoated
SLB-12.7-20N 		12.7mm 20mm
1-3 weeks
SGD 34.80
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ12.7mm
Focal length f −20mm
Edge thickness te 4.2mm
Center thickness tc 2mm
Back focal length fb −21.3mm
Radius of curvature r 10.38mm
Centration ＜1′
i
Plano Concave Lens 15mm Diameter −20mm Focal Length Uncoated
SLB-15-20N 		15mm 20mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ15mm
Focal length f −20mm
Edge thickness te 5.2mm
Center thickness tc 2mm
Back focal length fb −21.3mm
Radius of curvature r 10.38mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −200mm Focal Length Uncoated
SLB-25-200N 		25mm 200mm
in stock
SGD 42.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −200mm
Edge thickness te 2.8mm
Center thickness tc 2mm
Back focal length fb −201.3mm
Radius of curvature r 103.8mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −80mm Focal Length Uncoated
SLB-50-80N 		50mm 80mm
1-3 weeks
SGD 76.80
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −80mm
Edge thickness te 11.4mm
Center thickness tc 3mm
Back focal length fb −82.0mm
Radius of curvature r 41.52mm
Centration ＜1′
i
Plano Concave Lens 15mm Diameter −40mm Focal Length Uncoated
SLB-15-40N 		15mm 40mm
in stock
SGD 34.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ15mm
Focal length f −40mm
Edge thickness te 3.4mm
Center thickness tc 2mm
Back focal length fb −41.3mm
Radius of curvature r 20.76mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −50mm Focal Length Uncoated
SLB-25.4-50N 		25.4mm 50mm
in stock
SGD 45.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −50mm
Edge thickness te 5.3mm
Center thickness tc 2mm
Back focal length fb −51.3mm
Radius of curvature r 25.95mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −120mm Focal Length Uncoated
SLB-50-120N 		50mm 120mm
1-3 weeks
SGD 69.50
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −120mm
Edge thickness te 8.2mm
Center thickness tc 3mm
Back focal length fb −122.0mm
Radius of curvature r 62.28mm
Centration ＜1′
i
Plano Concave Lens 15mm Diameter −70mm Focal Length Uncoated
SLB-15-70N 		15mm 70mm
in stock
SGD 34.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ15mm
Focal length f −70mm
Edge thickness te 2.8mm
Center thickness tc 2mm
Back focal length fb −71.3mm
Radius of curvature r 36.33mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −80mm Focal Length Uncoated
SLB-25.4-80N 		25.4mm 80mm
1-3 weeks
SGD 43.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −80mm
Edge thickness te 4mm
Center thickness tc 2mm
Back focal length fb −81.3mm
Radius of curvature r 41.52mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −200mm Focal Length Uncoated
SLB-50-200N 		50mm 200mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −200mm
Edge thickness te 6.1mm
Center thickness tc 3mm
Back focal length fb −202.0mm
Radius of curvature r 103.8mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −25mm Focal Length Uncoated
SLB-20-25N 		20mm 25mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −25mm
Edge thickness te 6.7mm
Center thickness tc 2mm
Back focal length fb −26.3mm
Radius of curvature r 12.98mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −150mm Focal Length Uncoated
SLB-25.4-150N 		25.4mm 150mm
1-3 weeks
SGD 42.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −150mm
Edge thickness te 3mm
Center thickness tc 2mm
Back focal length fb −151.3mm
Radius of curvature r 77.85mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −300mm Focal Length Uncoated
SLB-50-300N 		50mm 300mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −300mm
Edge thickness te 5mm
Center thickness tc 3mm
Back focal length fb −302.0mm
Radius of curvature r 155.7mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −50mm Focal Length Uncoated
SLB-20-50N 		20mm 50mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −50mm
Edge thickness te 4mm
Center thickness tc 2mm
Back focal length fb −51.3mm
Radius of curvature r 25.95mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −35mm Focal Length Uncoated
SLB-30-35N 		30mm 35mm
in stock
SGD 50.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −35mm
Edge thickness te 9.9mm
Center thickness tc 2mm
Back focal length fb −36.3mm
Radius of curvature r 18.17mm
Centration ＜1′
i
Plano Concave Lens 50.8mm Diameter −90mm Focal Length Uncoated
SLB-50.8-90N 		50.8mm 90mm
in stock
SGD 74.40
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50.8mm
Focal length f −90mm
Edge thickness te 10.5mm
Center thickness tc 3mm
Back focal length fb −92.0mm
Radius of curvature r 46.71mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −80mm Focal Length Uncoated
SLB-20-80N 		20mm 80mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −80mm
Edge thickness te 3.2mm
Center thickness tc 2mm
Back focal length fb −81.3mm
Radius of curvature r 41.52mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −60mm Focal Length Uncoated
SLB-30-60N 		30mm 60mm
in stock
SGD 46.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −60mm
Edge thickness te 5.9mm
Center thickness tc 2mm
Back focal length fb −61.3mm
Radius of curvature r 31.14mm
Centration ＜1′
i
Plano Concave Lens 50.8mm Diameter −200mm Focal Length Uncoated
SLB-50.8-200N 		50.8mm 200mm
1-3 weeks
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50.8mm
Focal length f −200mm
Edge thickness te 6.2mm
Center thickness tc 3mm
Back focal length fb −202.0mm
Radius of curvature r 103.8mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −120mm Focal Length Uncoated
SLB-20-120N 		20mm 120mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −120mm
Edge thickness te 2.8mm
Center thickness tc 2mm
Back focal length fb −121.3mm
Radius of curvature r 62.28mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −90mm Focal Length Uncoated
SLB-30-90N 		30mm 90mm
in stock
SGD 40.90
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −90mm
Edge thickness te 4.5mm
Center thickness tc 2mm
Back focal length fb −91.3mm
Radius of curvature r 46.71mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −15mm Focal Length Uncoated
SLB-10-15N 		10mm 15mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −15mm
Edge thickness te 3.8mm
Center thickness tc 2mm
Back focal length fb −16.3mm
Radius of curvature r 7.79mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −35mm Focal Length Uncoated
SLB-25-35N 		25mm 35mm
in stock
SGD 46.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −35mm
Edge thickness te 7mm
Center thickness tc 2mm
Back focal length fb −36.3mm
Radius of curvature r 18.17mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −150mm Focal Length Uncoated
SLB-30-150N 		30mm 150mm
in stock
SGD 40.90
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −150mm
Edge thickness te 3.5mm
Center thickness tc 2mm
Back focal length fb −151.3mm
Radius of curvature r 77.85mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −30mm Focal Length Uncoated
SLB-10-30N 		10mm 30mm
in stock
SGD 31.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −30mm
Edge thickness te 2.8mm
Center thickness tc 2mm
Back focal length fb −31.3mm
Radius of curvature r 15.57mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −60mm Focal Length Uncoated
SLB-25-60N 		25mm 60mm
in stock
SGD 44.50
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −60mm
Edge thickness te 4.6mm
Center thickness tc 2mm
Back focal length fb −61.3mm
Radius of curvature r 31.14mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −220mm Focal Length Uncoated
SLB-30-220N 		30mm 220mm
in stock
SGD 40.90
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −220mm
Edge thickness te 3mm
Center thickness tc 2mm
Back focal length fb −221.3mm
Radius of curvature r 114.18mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −60mm Focal Length Uncoated
SLB-10-60N 		10mm 60mm
in stock
SGD 31.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −60mm
Edge thickness te 2.4mm
Center thickness tc 2mm
Back focal length fb −61.3mm
Radius of curvature r 31.14mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −90mm Focal Length Uncoated
SLB-25-90N 		25mm 90mm
in stock
SGD 43.90
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −90mm
Edge thickness te 3.7mm
Center thickness tc 2mm
Back focal length fb −91.3mm
Radius of curvature r 46.71mm
Centration ＜1′
i
Plano Concave Lens 40mm Diameter −60mm Focal Length Uncoated
SLB-40-60N 		40mm 60mm
in stock
SGD 70.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ40mm
Focal length f −60mm
Edge thickness te 9.3mm
Center thickness tc 2mm
Back focal length fb −61.3mm
Radius of curvature r 31.14mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −90mm Focal Length Uncoated
SLB-10-90N 		10mm 90mm
in stock
SGD 31.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −90mm
Edge thickness te 2.3mm
Center thickness tc 2mm
Back focal length fb −91.3mm
Radius of curvature r 46.71mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −150mm Focal Length Uncoated
SLB-25-150N 		25mm 150mm
1-3 weeks
SGD 42.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −150mm
Edge thickness te 3mm
Center thickness tc 2mm
Back focal length fb −151.3mm
Radius of curvature r 77.85mm
Centration ＜1′
i
Plano Concave Lens 40mm Diameter −100mm Focal Length Uncoated
SLB-40-100N 		40mm 100mm
1-3 weeks
SGD 64.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ40mm
Focal length f −100mm
Edge thickness te 6mm
Center thickness tc 2mm
Back focal length fb −101.3mm
Radius of curvature r 51.9mm
Centration ＜1′
i
Plano Concave Lens 12.7mm Diameter −25mm Focal Length Uncoated
SLB-12.7-25N 		12.7mm 25mm
1-3 weeks
SGD 34.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ12.7mm
Focal length f −25mm
Edge thickness te 3.7mm
Center thickness tc 2mm
Back focal length fb −26.3mm
Radius of curvature r 12.98mm
Centration ＜1′
i
Plano Concave Lens 15mm Diameter −25mm Focal Length Uncoated
SLB-15-25N 		15mm 25mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ15mm
Focal length f −25mm
Edge thickness te 4.4mm
Center thickness tc 2mm
Back focal length fb −26.3mm
Radius of curvature r 12.98mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −30mm Focal Length Uncoated
SLB-25.4-30N 		25.4mm 30mm
in stock
SGD 47.60
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −30mm
Edge thickness te 8.6mm
Center thickness tc 2mm
Back focal length fb −31.3mm
Radius of curvature r 15.57mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −90mm Focal Length Uncoated
SLB-50-90N 		50mm 90mm
in stock
SGD 74.40
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −90mm
Edge thickness te 10.3mm
Center thickness tc 3mm
Back focal length fb −92.0mm
Radius of curvature r 46.71mm
Centration ＜1′
i
Plano Concave Lens 15mm Diameter −50mm Focal Length Uncoated
SLB-15-50N 		15mm 50mm
in stock
SGD 34.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ15mm
Focal length f −50mm
Edge thickness te 3.1mm
Center thickness tc 2mm
Back focal length fb −51.3mm
Radius of curvature r 25.95mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −60mm Focal Length Uncoated
SLB-25.4-60N 		25.4mm 60mm
1-3 weeks
SGD 44.50
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −60mm
Edge thickness te 4.7mm
Center thickness tc 2mm
Back focal length fb −61.3mm
Radius of curvature r 31.14mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −150mm Focal Length Uncoated
SLB-50-150N 		50mm 150mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −150mm
Edge thickness te 7.1mm
Center thickness tc 3mm
Back focal length fb −152.0mm
Radius of curvature r 77.85mm
Centration ＜1′
i
Plano Concave Lens 15mm Diameter −80mm Focal Length Uncoated
SLB-15-80N 		15mm 80mm
in stock
SGD 34.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ15mm
Focal length f −80mm
Edge thickness te 2.7mm
Center thickness tc 2mm
Back focal length fb −81.3mm
Radius of curvature r 41.52mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −90mm Focal Length Uncoated
SLB-25.4-90N 		25.4mm 90mm
in stock
SGD 42.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −90mm
Edge thickness te 3.8mm
Center thickness tc 2mm
Back focal length fb −91.3mm
Radius of curvature r 46.71mm
Centration ＜1′
i
Plano Concave Lens 50mm Diameter −220mm Focal Length Uncoated
SLB-50-220N 		50mm 220mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50mm
Focal length f −220mm
Edge thickness te 5.8mm
Center thickness tc 3mm
Back focal length fb −222.0mm
Radius of curvature r 114.18mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −30mm Focal Length Uncoated
SLB-20-30N 		20mm 30mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −30mm
Edge thickness te 5.6mm
Center thickness tc 2mm
Back focal length fb −31.3mm
Radius of curvature r 15.57mm
Centration ＜1′
i
Plano Concave Lens 25.4mm Diameter −200mm Focal Length Uncoated
SLB-25.4-200N 		25.4mm 200mm
in stock
SGD 42.10
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25.4mm
Focal length f −200mm
Edge thickness te 2.8mm
Center thickness tc 2mm
Back focal length fb −201.3mm
Radius of curvature r 103.8mm
Centration ＜1′
i
Plano Concave Lens 50.8mm Diameter −70mm Focal Length Uncoated
SLB-50.8-70N 		50.8mm 70mm
in stock
SGD 79.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50.8mm
Focal length f −70mm
Edge thickness te 13.4mm
Center thickness tc 3mm
Back focal length fb −72.0mm
Radius of curvature r 36.33mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −60mm Focal Length Uncoated
SLB-20-60N 		20mm 60mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −60mm
Edge thickness te 3.6mm
Center thickness tc 2mm
Back focal length fb −61.3mm
Radius of curvature r 31.14mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −40mm Focal Length Uncoated
SLB-30-40N 		30mm 40mm
in stock
SGD 48.80
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −40mm
Edge thickness te 8.4mm
Center thickness tc 2mm
Back focal length fb −41.3mm
Radius of curvature r 20.76mm
Centration ＜1′
i
Plano Concave Lens 50.8mm Diameter −100mm Focal Length Uncoated
SLB-50.8-100N 		50.8mm 100mm
in stock
SGD 72.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50.8mm
Focal length f −100mm
Edge thickness te 9.6mm
Center thickness tc 3mm
Back focal length fb −102.0mm
Radius of curvature r 51.9mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −90mm Focal Length Uncoated
SLB-20-90N 		20mm 90mm
1-3 weeks
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −90mm
Edge thickness te 3.1mm
Center thickness tc 2mm
Back focal length fb −91.3mm
Radius of curvature r 46.71mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −70mm Focal Length Uncoated
SLB-30-70N 		30mm 70mm
in stock
SGD 44.50
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −70mm
Edge thickness te 5.2mm
Center thickness tc 2mm
Back focal length fb −71.3mm
Radius of curvature r 36.33mm
Centration ＜1′
i
Plano Concave Lens 50.8mm Diameter −250mm Focal Length Uncoated
SLB-50.8-250N 		50.8mm 250mm
in stock
SGD 67.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ50.8mm
Focal length f −250mm
Edge thickness te 5.5mm
Center thickness tc 3mm
Back focal length fb −252.0mm
Radius of curvature r 129.75mm
Centration ＜1′
i
Plano Concave Lens 20mm Diameter −150mm Focal Length Uncoated
SLB-20-150N 		20mm 150mm
in stock
SGD 36.00
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ20mm
Focal length f −150mm
Edge thickness te 2.6mm
Center thickness tc 2mm
Back focal length fb −151.3mm
Radius of curvature r 77.85mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −100mm Focal Length Uncoated
SLB-30-100N 		30mm 100mm
1-3 weeks
SGD 40.90
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −100mm
Edge thickness te 4.2mm
Center thickness tc 2mm
Back focal length fb −101.3mm
Radius of curvature r 51.9mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −20mm Focal Length Uncoated
SLB-10-20N 		10mm 20mm
in stock
SGD 34.80
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −20mm
Edge thickness te 3.3mm
Center thickness tc 2mm
Back focal length fb −21.3mm
Radius of curvature r 10.38mm
Centration ＜1′
i
Plano Concave Lens 25mm Diameter −40mm Focal Length Uncoated
SLB-25-40N 		25mm 40mm
in stock
SGD 46.30
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ25mm
Focal length f −40mm
Edge thickness te 6.2mm
Center thickness tc 2mm
Back focal length fb −41.3mm
Radius of curvature r 20.76mm
Centration ＜1′
i
Plano Concave Lens 30mm Diameter −170mm Focal Length Uncoated
SLB-30-170N 		30mm 170mm
in stock
SGD 40.90
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ30mm
Focal length f −170mm
Edge thickness te 3.3mm
Center thickness tc 2mm
Back focal length fb −171.3mm
Radius of curvature r 88.23mm
Centration ＜1′
i
Plano Concave Lens 10mm Diameter −40mm Focal Length Uncoated
SLB-10-40N 		10mm 40mm
in stock
SGD 31.70
Material BK7
Design Wavelength 546.1nm
Refractive index n<sub>e</sub> 1.519
Coating Uncoated
Clear aperture 90% of the diameter
Surface Quality (Scratch-Dig) 20-10
Wavelength range of Antireflection Coating Uncoated
Diameter φD φ10mm
Focal length f −40mm
Edge thickness te 2.6mm
Center thickness tc 2mm
Back focal length fb −41.3mm
Radius of curvature r 20.76mm
Centration ＜1′

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These simple negative lenses have many uses. Alone they form a virtual image of a distant object
or collimated light source. Used in combination with other optics they reduce the power of the
system. Sharp edges which are common in negative lenses are removed by beveling in order to
reduce the likelihood of chipping.

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