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49-956-INK 20 mm Dia. N-BAF10/N-SF6 Achromatic Doublet; EFL=25mm VIS-NIR 400-1000nm

49-956-INK 20 mm Dia. N-BAF10/N-SF6 Achromatic Doublet; EFL=25mm VIS-NIR 400-1000nm

Type
Lens
Subtype
Multiplets
Brand
Edmund Optics
Product webpage
Edmund Optics products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
20 mm
EFL
25 mm
R1
18.03 mm
R2
-13.27 mm

Material 1

Name
N-BAF10
Dispersion Equation
Sellmeier
n (λ)
1.6730569473646495
λ
550 nm
B1
1.5851495
C1
0.00926681282 μm2
B2
0.143559385
C2
0.0424489805 μm2
B3
1.08521269
C3
105.613573 μm2

Material 2

Name
N-SF6
Dispersion Equation
Sellmeier
n (λ)
1.811866267147773
λ
550 nm
B1
1.77931763
C1
0.0133714182 μm2
B2
0.338149866
C2
0.0617533621 μm2
B3
2.08734474
C3
174.01759 μm2

49-956-INK 20 mm Dia. N-BAF10/N-SF6 Achromatic Doublet; EFL=25mm VIS-NIR 400-1000nm

The 49-956-INK is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens, with a diameter of 20 mm, is specifically engineered for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning 400-1000nm. The lens is part of Edmund Optics' extensive catalog, and it is currently in stock, as indicated by its weblink status.

The lens features a focal length (EFL) of 25mm, making it suitable for a wide range of optical applications. The geometry of the lens includes an edge thickness of 8.06mm, an inner radius and outer radius of 0, and a center thickness of 9.5mm. The lens also features a center thickness 'a' of 2.5mm.

The 49-956-INK is composed of two types of glass, N-BAF10 and N-SF6, both from Schott. These materials are carefully selected to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points.

The lens is coated with Edmund Optics' VIS-NIR0SP2002000 coating on both the front and back surfaces. This coating is designed to enhance the lens' performance in the VIS-NIR spectrum, providing improved transmission and durability.

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