45-379 9.0mm Dia. x -9 FL; MgF2 Coated; Plano-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- -9 mm
- BFL
- -10.21 mm
- R1
- -7.07 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
45-379 9.0mm Dia. x -9 FL; MgF2 Coated; Plano-Concave Lens 400-700nm
The 45-379 is a plano-concave lens with a 9.0mm diameter, sourced from Edmund Optics. This lens is designed for use within a wavelength range of 400-700nm, making it suitable for a wide range of optical applications. The lens features a base shape of circular geometry, with a center thickness of 2.25mm and an edge thickness of 3.63mm.
The lens's effective focal length (EFL) is -9mm, indicating its diverging nature. The first radius of curvature (R1) is -7.07mm, and the back focal length (BFL) is -10.21mm. The lens does not have an inner or outer radius, suggesting a simple, two-surface design.
The lens is made from n-SF11 Schott, a high-index glass with excellent optical properties. It is coated with EDM MgF2 std curve on both the front and back surfaces, which provides improved light transmission and reduces surface reflections. This coating is standard and offers a wide spectral range, making it a versatile choice for many optical systems.
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