45-267 20 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=60mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 60 mm
- R1
- 35.92 mm
- R2
- -28.12 mm
Material 1
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5185223876207927
- λ
- 550 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
Material 2
- Name
- N-SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6771143911586193
- λ
- 550 nm
- B1
- 1.52481889
- C1
- 0.011254756 μm2
- B2
- 0.187085527
- C2
- 0.0588995392 μm2
- B3
- 1.42729015
- C3
- 129.141675 μm2
45-267 20 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=60mm MgF2 400-700nm
The 45-267 is a high-quality achromatic doublet lens, sourced from the renowned optical components 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 an effective focal length (EFL) of 60mm, providing a compact yet powerful optical solution. The doublet design is composed of two elements, made from N-BK7 and N-SF5 Schott glass, respectively. This combination helps to minimize chromatic aberration, ensuring high-quality imaging.
The lens surfaces are coated with Edmund Optics' standard MgF2 coating, which provides excellent transmission characteristics across the visible spectrum. This coating also offers a high degree of environmental durability, making the lens suitable for use in various conditions.
The lens geometry includes a central thickness of 5mm, with an edge thickness of 4.98mm. The lens features a concave-convex-concave geometry, with radii of curvature of 35.92mm, -28.12mm, and -83.79mm, respectively. This complex geometry contributes to the lens's high optical performance.
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