67-328 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=160mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 160 mm
- R1
- 107.2 mm
- R2
- -67.9 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
67-328 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=160mm MgF2 400-700nm
The 67-328 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 wavelength range, making it suitable for a wide range of optical applications.
The lens features a 25mm diameter and an effective focal length (EFL) of 160mm, 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, a common issue in optical systems, thereby improving the overall image quality.
The lens surfaces are coated with Edmund Optics' standard MgF2 coating, which is designed to provide high transmission across the specified wavelength range. This coating also offers excellent environmental stability, making the lens suitable for use in various conditions.
The geometry of the lens includes a central thickness of 3mm, with a slight increase to 4.33mm at the edge. The inner and outer radii are 0mm, and the lens features a curvature of r1=107.2mm and r2=-67.9mm, followed by a concave shape with r3=-179.23mm. The lens also has a slight asymmetry in thickness, with a center thickness of 2.5mm on one side.
