AC508-250-A-ML 50.8 mm Dia. N-BK7/SF2 Mounted Achromatic Doublet; EFL=250mm 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- R1
- 137.1 mm
- R2
- -111.7 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
- SF2
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6517416788523134
- λ
- 550 nm
- B1
- 1.40301821
- C1
- 0.0105795466 μm2
- B2
- 0.231767504
- C2
- 0.0493226978 μm2
- B3
- 0.939056586
- C3
- 112.405955 μm2
AC508-250-A-ML 50.8 mm Dia. N-BK7/SF2 Mounted Achromatic Doublet; EFL=250mm 400-700nm
The AC508-250-A-ML is a mounted achromatic doublet lens, designed and manufactured by Thorlabs. This lens is specifically engineered for use within the 400-700nm wavelength range, making it suitable for a wide array of optical applications.
The lens features a 50.8 mm diameter, offering a substantial surface area for light transmission. The lens is constructed from two materials: N-BK7 from Schott and SF2 from Schott. These materials are renowned for their optical quality and are commonly used in a variety of optical systems.
The lens's geometry is intricately designed, with an inner radius of 0 and an outer radius of 0. The first and second radii of curvature (r1 and r2) are 137.1 mm and -111.7 mm, respectively, while the third radius of curvature (r3) is -459.2 mm. The edge thickness of the lens is 6.4 mm, while the center thicknesses are 7.5 mm and 2 mm.
The lens is coated with Thorlabs' AC400-700-A coating on both the front and back surfaces, enhancing its performance within the specified wavelength range. The lens is mounted, providing convenience and ease of use for the end-user.
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