32-884 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=175mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 175 mm
- R1
- 109.16 mm
- R2
- -79.38 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
32-884 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=175mm MgF2 400-700nm
This is a 25 mm diameter achromatic doublet lens, catalog number 32-884, sourced from Edmund Optics. The lens is designed for use in the 400-700nm spectral range, featuring a standard MgF2 coating on both the front and back surfaces. The lens is part of the multiplets subtype, characterized by its complex geometry aimed at correcting various optical aberrations.
The lens's geometry includes an effective focal length (EFL) of 175mm, with a center thickness of 6mm and edge thickness of 7.94mm. The lens's first radius of curvature (R1) is 109.16mm, while the second radius (R2) is -79.38mm, and the third radius (R3) is -226.03mm. The lens's inner and outer radii are both zero, indicating a uniform thickness across the lens's diameter.
The lens is made from two types of materials: N-BK7 from Schott and N-SF5 from Schott. These materials were chosen for their specific refractive indices and dispersion properties, which contribute to the lens's achromatic design. The lens's coating, MgF2, is a standard coating that provides anti-reflection properties, reducing surface reflections and increasing transmission.
This lens is currently in stock, according to the vendor's website, and more information can be found at the provided weblink.
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