48-644 2.5mm Dia. x 5.0mm FL; Uncoated; Plano-Convex Lens
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 2.5 mm
- EFL
- 5 mm
- BFL
- 4.57 mm
- R1
- 4.25 mm
Material
- Name
- N-LASF9
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.8502442055719617
- λ
- 587.6 nm
- B1
- 2.00029547
- C1
- 0.0121426017 μm2
- B2
- 0.298926886
- C2
- 0.0538736236 μm2
- B3
- 1.80691843
- C3
- 156.530829 μm2
48-644 2.5mm Dia. x 5.0mm FL; Uncoated; Plano-Convex Lens
The 48-644 is a 2.5mm diameter, 5.0mm focal length Plano-Convex lens, sourced from the renowned optical components manufacturer, Edmund Optics. This uncoated lens is designed for use in a wide range of applications, particularly where high-quality imaging is required.
The lens's geometry is characterized by a 0.61mm edge thickness and a 0.8mm center thickness, ensuring robustness and durability. The effective focal length (EFL) is 5mm, making it suitable for systems that require a compact, high-performance lens. The lens's design includes a 4.25mm radius of curvature (ROC) for the curved face, resulting in a back focal length (BFL) of 4.57mm.
The lens is made from Schott's n-lasf9 material, a high-quality optical glass renowned for its excellent transmission properties in the visible spectrum. The material's Abbe number is 58.76, indicating a low dispersion, which is beneficial for imaging applications.
Notably, this lens is uncoated, meaning it does not have any anti-reflective or other surface treatments. While this may result in a higher reflectivity at the air-glass interface, it also means the lens is more cost-effective and easier to clean.