45-031 25.0mm Dia. x -25 FL; MgF2 Coated; Plano-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -25 mm
- BFL
- -26.96 mm
- R1
- -19.62 mm
Material
- Name
- N-SF11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7847141030246312
- λ
- 587.6 nm
- B1
- 1.73759695
- C1
- 0.013188707 μm2
- B2
- 0.313747346
- C2
- 0.0623068142 μm2
- B3
- 1.89878101
- C3
- 155.23629 μm2
45-031 25.0mm Dia. x -25 FL; MgF2 Coated; Plano-Concave Lens 400-700nm
The 45-031 is a plano-concave lens with a diameter of 25.0mm, a focal length of -25mm, and a central thickness of 3.5mm. The edge thickness measures 7.41mm. This lens is sourced from Edmund Optics and is currently in stock. It is designed for use within the wavelength range of 400-700nm, with a peak wavelength of 587.6nm.
The lens is made from n-sf11 Schott, a high-index glass with excellent transmittance in the visible spectrum. It features a magnesium fluoride (MgF2) coating on both the front and back surfaces, which is standard for Edmund Optics and provides a broadband anti-reflection coating. This coating enhances the lens's performance by reducing surface reflections and increasing transmission, thereby improving image quality and contrast.
The lens's geometry is spherical, with a radius of curvature (R1) of -19.62mm and a back focal length (BFL) of -26.96mm. The inner and outer radii are both 0mm, indicating a plano surface on one side and a concave surface on the other.
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