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89-128 5mm Dia. x 25mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm

89-128 5mm Dia. x 25mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm

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

Properties

Shape
Circular
Diameter
5 mm
EFL
25 mm
BFL
24.5 mm
R1
25.58 mm
R2
-25.58 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

89-128 5mm Dia. x 25mm FL; VIS-EXT Coated; Double-Convex Lens VIS-EXT 350-700nm

This is a 5mm diameter, double-convex lens with a focal length of 25mm, sourced from Edmund Optics. The lens is made from the high-quality material n-BK7 Schott, which is known for its excellent optical properties. The lens features a front and back coating of edm vis ext, which enhances its transmission capabilities within the visible light spectrum, specifically between 350-700nm.

The lens has a center thickness of 1.5mm and an edge thickness of 1.26mm, providing a robust structure while maintaining a compact design. The inner and outer radii are not specified, indicating that they are not a significant factor in the lens's performance or description. The back focal length (BFL) is 24.5mm, which is a critical measurement for designing optical systems that include this lens.

This lens is a spherical lens, meaning it has a curved surface on both sides. The radii of curvature for the first and second surfaces are 25.58mm and -25.58mm, respectively. This specific curvature profile contributes to the lens's focusing power and overall optical performance.

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