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SLB-20-80N 20.0 mm Dia. x -80.0 mm FL; Plano-Concave Lens Uncoated

SLB-20-80N 20.0 mm Dia. x -80.0 mm FL; Plano-Concave Lens Uncoated

Type
Lens
Subtype
Spherical Lens (Plano-Concave)
Brand
OptoSigma
Product webpage
OptoSigma products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
20 mm
EFL
-80 mm
BFL
-81.3 mm
R1
-41.52 mm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.518720636186463
λ
546.1 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

SLB-20-80N 20.0 mm Dia. x -80.0 mm FL; Plano-Concave Lens Uncoated

The SLB-20-80N is a Plano-Concave Lens, a type of spherical lens, sourced from OptoSigma. This lens has a base shape of a circle and is uncoated. The lens is designed with a diameter of 20.0 mm and a thickness at the edge of 3.2 mm, while the center thickness is 2.0 mm. The effective focal length (EFL) of this lens is -80.0 mm, making it a negative or diverging lens.

The lens's first radius of curvature (R1) is -41.52 mm, and the back focal length (BFL) is -81.3 mm. The lens does not have an inner or outer radius, indicating that it is a simple plano-concave lens. The material used in the construction of this lens is n-BK7 Schott, a common material in optical lenses due to its excellent optical properties.

The lens is designed to operate at a wavelength of 546.1 nm. The provided weblink leads to the vendor's page, where users can find more information about the lens and its availability.

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