47-057 25.4mm Dia. x 50.8mm FL; Uncoated; CaF2 Double-Convex Lens
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 50.8 mm
- BFL
- 48.51 mm
- R1
- 39.61 mm
- R2
- -39.61 mm
Material
- Name
- CaF2
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.3989581446368446
- λ
- 5000 nm
- B1
- 0.5675888
- C1
- 0.00252643 μm2
- B2
- 0.4710914
- C2
- 0.010078333 μm2
- B3
- 3.8484723
- C3
- 1200.555973 μm2
47-057 25.4mm Dia. x 50.8mm FL; Uncoated; CaF2 Double-Convex Lens
The 47-057 is a high-quality double-convex lens, sourced from the renowned optical components vendor, Edmund Optics. This lens boasts a 25.4mm diameter and a focal length of 50.8mm, making it suitable for a wide range of optical applications.
The lens is crafted from Calcium Fluoride (CaF2), a material known for its excellent transparency in the ultraviolet, visible, and near-infrared regions of the spectrum. This makes the 47-057 an ideal choice for applications that require high transmission across a broad wavelength range.
The double-convex geometry of the lens, characterized by its two positively curved surfaces, provides a strong focusing power. The first surface has a radius of curvature of 39.61mm, while the second surface has a radius of -39.61mm. This geometry results in a back focal length of 48.51mm.
The lens is uncoated, offering a cost-effective solution for applications where anti-reflection coatings are not required or desired. However, for applications where minimizing surface reflections is crucial, coated versions of this lens are available from Edmund Optics.