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48-041 12mm Dia. x 20mm FL; UV-AR Coated; UV Double-Convex Lens UV-AR 250-425nm

48-041 12mm Dia. x 20mm FL; UV-AR Coated; UV Double-Convex Lens UV-AR 250-425nm

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

Properties

Shape
Circular
Diameter
12 mm
EFL
20 mm
BFL
18.44 mm
R1
17.63 mm
R2
-17.63 mm

Material

Name
Fused Silica
Dispersion Equation
Sellmeier
n (λ)
1.458462342053241
λ
587.6 nm
B1
0.6961663
C1
0.00467914825849 μm2
B2
0.4079426
C2
0.013512063073959999 μm2
B3
0.8974794
C3
97.934002537921 μm2

48-041 12mm Dia. x 20mm FL; UV-AR Coated; UV Double-Convex Lens UV-AR 250-425nm

The 48-041 is a UV-AR coated, double-convex lens with a diameter of 12mm and a focal length of 20mm, sourced from Edmund Optics. This lens is designed for use within the UV spectrum, specifically between 250-425nm, making it ideal for applications such as UV imaging or spectroscopy.

The lens is constructed from fused silica (mal-1965), a material known for its high transparency in the UV range. The double-convex geometry, with radii of curvature of 17.63mm and -17.63mm, provides a large numerical aperture, enhancing the lens's light-gathering capability. The center thickness of the lens is 4.37mm, while the edge thickness is 2.27mm, contributing to its robustness and durability.

The lens features UV-AR coatings on both the front and back surfaces, following the standard curve from Edmund Optics. These coatings are designed to reduce surface reflections and increase transmission within the UV range, further optimizing the lens's performance in its intended application.

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