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45-029 25.0mm Dia. x -50 FL; MgF2 Coated; Plano-Concave Lens 400-700nm

45-029 25.0mm Dia. x -50 FL; MgF2 Coated; Plano-Concave Lens 400-700nm

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

Properties

Shape
Circular
Diameter
25 mm
EFL
-50 mm
BFL
-52.31 mm
R1
-25.84 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

45-029 25.0mm Dia. x -50 FL; MgF2 Coated; Plano-Concave Lens 400-700nm

The 45-029 is a plano-concave lens with a diameter of 25.0mm, a focal length of -50, and a central thickness of 3.5mm. The edge thickness is 6.33mm, and the lens has a clear aperture. The lens is made of BK7 Schott glass, a popular choice for its high homogeneity and excellent optical transmission in the visible spectrum.

The lens is coated with MgF2, a broadband anti-reflection coating that reduces reflection across the entire spectral range of 400-700nm. This coating enhances the lens's transmission, making it suitable for use in high-performance optical systems that require low loss and high damage threshold.

The lens's geometry is spherical, with a radius of curvature of -25.84mm on the concave surface. The back focal length is -52.31mm, and the lens has no inner or outer radius, indicating a plano surface on the incident side.

This lens is available from Edmund Optics and is in stock at the time of writing. For more information, including pricing and availability, please refer to the provided weblink.

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