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45-898 30mm Dia. x 50mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm

45-898 30mm Dia. x 50mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm

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

Properties

Shape
Circular
Diameter
30 mm
EFL
50 mm
BFL
47.82 mm
R1
50.56 mm
R2
-50.56 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

45-898 30mm Dia. x 50mm FL; VIS-NIR Coated; Double-Convex Lens VIS-NIR 400-1000nm

The 45-898 is a double-convex lens with a diameter of 30mm and a focal length of 50mm, sourced from Edmund Optics. This lens is designed for use within the visible to near-infrared spectrum, specifically catering to wavelengths between 400 and 1000nm.

The lens is constructed from N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The base shape of the lens is circular, and it features a spherical geometry, with radii of curvature R1 and R2 at 50.56mm and -50.56mm respectively. The lens has an edge thickness of 2mm and a center thickness of 6.55mm, while the back focal length (BFL) measures 47.82mm.

The 45-898 lens is coated with a VIS-NIR coating, specifically the EDM VISNIR0SP2002000 coating, on both the front and back surfaces. This coating enhances the lens's performance within the specified wavelength range, improving transmission and reducing reflection.

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