32-315 12.5 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=40mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 40 mm
- R1
- 24.77 mm
- R2
- -18.01 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
32-315 12.5 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=40mm MgF2 400-700nm
The 32-315 is a high-quality achromatic doublet lens from Edmund Optics, designed with a 12.5 mm diameter and a focal length of 40mm. This lens is a multiplet, meaning it is composed of multiple optical elements to achieve superior performance.
The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott. N-BK7, also known as BK7, is a borosilicate crown glass known for its excellent optical properties and high transmittance in the visible spectrum. N-SF5, on the other hand, is a dense flint glass with a high refractive index and dispersion, making it ideal for achromatic applications.
The lens features a standard MgF2 coating on both the front and back surfaces. This coating reduces reflection and increases transmission in the 400-700nm range, making it suitable for a wide range of applications.
The geometry of the lens includes a thickness of 3.88mm at the edge, a central thickness of 3.73mm, and a thickness of 1.33mm at the center a. The lens also features radii of curvature of 24.77mm, -18.01mm, and -51.17mm for the first, second, and third surfaces, respectively.
According to the vendor, this item is currently in stock and can be purchased directly from the Edmund Optics website.
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