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49-512 50mm Dia. x 250mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm

49-512 50mm Dia. x 250mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm

Type
Lens
Subtype
Spherical Lens (Convex-Convex)
Brand
Edmund Optics
Product webpage
Edmund Optics products in the 3DOptix catalog

Properties

Shape
Circular
Diameter
50 mm
EFL
250 mm
BFL
248.37 mm
R1
257.57 mm
R2
-257.57 mm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5167984379050088
λ
587.6 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

49-512 50mm Dia. x 250mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm

This is a 50mm diameter by 250mm focal length double-convex lens, specifically designed for use in the near-infrared (NIR) spectrum. The lens is sourced from Edmund Optics and is currently in stock. It is made from n-BK7 Schott, a popular optical glass known for its excellent transparency in the visible and near-infrared regions.

The lens features a standard NIR I coating on both the front and back surfaces, which enhances its performance in the 600-1050nm wavelength range. This coating is part of Edmund Optics' NIR I series, which provides high transmission and low reflectance in the NIR spectrum.

The geometry of the lens includes a thickness of 2.5mm at the edge and 4.93mm at the center. The front and back radii of curvature are 257.57mm and -257.57mm respectively, resulting in a back focal length of 248.37mm. The lens has a spherical shape, which is a common choice for its simplicity and wide range of applications.

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