AC254-040-A-ML 25.4 mm Dia. N-BK7/SF5 Mounted Achromatic Doublet; EFL=40mm 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- R1
- 23.7 mm
- R2
- -20.1 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
- SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6771178435097918
- λ
- 550 nm
- B1
- 1.46141885
- C1
- 0.0111826126 μm2
- B2
- 0.247713019
- C2
- 0.0508594669 μm2
- B3
- 0.949995832
- C3
- 112.041888 μm2
AC254-040-A-ML 25.4 mm Dia. N-BK7/SF5 Mounted Achromatic Doublet; EFL=40mm 400-700nm
The AC254-040-A-ML is a high-quality achromatic doublet lens from Thorlabs, designed with a 25.4 mm diameter and a focal length of 40mm for the spectral range of 400-700nm. This lens is a multiplet, meaning it is composed of multiple optical elements to achieve superior performance.
The lens is made from two types of materials: n-BK7 from Schott and SF5 from Schott. The n-BK7 is a well-known borosilicate crown glass, while SF5 is a high-index flint glass. The combination of these materials helps to correct chromatic aberrations, making the lens suitable for a wide range of applications, including imaging and beam shaping.
The lens features a front coating of tho ac400-700-a and a back coating of the same, ensuring high transmission and durability. The edge thickness of the lens is 7.4mm, while the center thicknesses are 10mm and 2.5mm. The lens has a circular shape with an inner radius of 0 and an outer radius of 0. The radii of curvature are r1=23.7mm, r2=-20.1mm, and r3=-57.7mm.
According to the vendor's information, the lens is in stock and the web link provided is valid. This lens is a versatile and reliable optical component, perfect for applications that require high-quality imaging or beam shaping in the visible spectrum.
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