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SLB-50.8B-250NIR2 50.8 mm Dia. x -249.5 mm FL; Coated; Double-Concave Lens 750-1550nm

SLB-50.8B-250NIR2 50.8 mm Dia. x -249.5 mm FL; Coated; Double-Concave Lens 750-1550nm

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

Properties

Shape
Circular
Diameter
50.8 mm
EFL
-249.5 mm
BFL
-250.5 mm
R1
-259.5 mm
R2
259.5 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-50.8B-250NIR2 50.8 mm Dia. x -249.5 mm FL; Coated; Double-Concave Lens 750-1550nm

The SLB-50.8B-250NIR2 is a high-quality double-concave lens, 50.8 mm in diameter, designed for use in the near-infrared spectrum of 750-1550nm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry, and is currently in stock, as indicated by its weblink status.

The lens is made from n-bk7 schott, a popular material in the optical industry due to its excellent optical properties. It features a base shape of a circle, with a thickness of 5.5mm at the edge and 3mm at the center. The effective focal length (EFL) of this lens is -249.5mm, making it a powerful tool for focusing or diverging light in various applications.

The radii of curvature for this lens are -259.5mm for the first surface and 259.5mm for the second surface. The back focal length (BFL) is -250.5mm, and both the inner and outer radii are 0mm. This lens is coated with opt ir2 on both the front and back surfaces, enhancing its performance in the near-infrared spectrum.

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