65-552 20 mm Dia. N-BASF64/N-SF66 Achromatic Doublet; EFL=20mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 20 mm
- R1
- 15.13 mm
- R2
- -11.18 mm
Material 1
- Name
- N-BASF64
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7077938628679645
- λ
- 550 nm
- B1
- 1.65554268
- C1
- 0.0104485644 μm2
- B2
- 0.17131977
- C2
- 0.0499394756 μm2
- B3
- 1.33664448
- C3
- 118.961472 μm2
Material 2
- Name
- N-SF66
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.9321208113933757
- λ
- 550 nm
- B1
- 2.0245976
- C1
- 0.0147053225 μm2
- B2
- 0.470187196
- C2
- 0.0692998276 μm2
- B3
- 2.59970433
- C3
- 161.817601 μm2
65-552 20 mm Dia. N-BASF64/N-SF66 Achromatic Doublet; EFL=20mm MgF2 400-700nm
The 65-552 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is specifically designed for use in the 400-700nm spectral range, making it suitable for a wide range of optical applications.
The lens features a 20mm diameter and a focal length of 20mm, indicated by its EFL (Effective Focal Length) value. The lens is constructed from two types of glass, N-BASF64 and N-SF66, both from the Schott catalog. This combination of materials helps to correct chromatic aberration, a common issue in optical systems.
The lens geometry is carefully designed, with a central thickness of 12.57mm and edge thickness of 11.25mm. The lens surfaces are coated with Edmund Optics' standard MgF2 coating, which provides excellent transmission characteristics and durability. The lens also features a multiplet shape, which is a complex structure composed of multiple elements, each with its own radius of curvature.
The radii of curvature for the lens surfaces are R1 = 15.13mm, R2 = -11.18mm, and R3 = -33.15mm. The lens also has an inner radius of 0mm and an outer radius of 0mm. The lens is available for purchase through the Edmund Optics website, and the link provided is currently valid and indicates that the lens is in stock.
