62-474 9 mm Dia. N-BK7/N-SF5 Negative Achromatic Doublet; EFL=-12mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- -12 mm
- R1
- -6.98 mm
- R2
- 6.98 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
62-474 9 mm Dia. N-BK7/N-SF5 Negative Achromatic Doublet; EFL=-12mm MgF2 400-700nm
The 62-474 is a high-quality negative achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is designed with a base shape of 9 mm diameter and features a negative focal length of -12mm, making it suitable for a wide range of optical applications.
The lens is constructed from two types of materials, N-BK7 and N-SF5, both from Schott. This combination ensures excellent optical performance, minimizing chromatic aberration and delivering sharp, clear images. The lens is coated with EDM MgF2 std curve on both the front and back surfaces, enhancing its light transmission capabilities within the 400-700nm spectrum.
The geometry of the lens is meticulously designed, with an inner radius of 0 and an outer radius of 0, ensuring optimal light refraction. The thickness at the edge is 5.79mm, while the center thickness is 1.5mm, providing robustness and stability to the lens. The lens also features a thickness center a of 2.5mm, offering additional design flexibility.
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