AC254-400-A 25.4 mm Dia. N-BK7/SF2 Unmounted Achromatic Doublet; EFL=399.3mm 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- R1
- 219.8 mm
- R2
- -181.6 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
AC254-400-A 25.4 mm Dia. N-BK7/SF2 Unmounted Achromatic Doublet; EFL=399.3mm 400-700nm
The AC254-400-A is a high-quality achromatic doublet lens, sourced from the renowned optical component manufacturer, Thorlabs. This lens is designed for use in the 400-700nm spectral range, making it suitable for a wide range of applications in the visible spectrum.
The lens features a 25.4mm diameter and is composed of two elements, made from N-BK7 and SF2 Schott glass. This combination helps to correct chromatic aberrations, ensuring sharp and clear images. The lens has a focal length of 399.3mm, as determined by its effective focal length (EFL).
The lens is unmounted, providing users with the flexibility to integrate it into their own systems. It has a central thickness of 4mm and edge thickness of 5.5mm, with inner and outer radii of 0mm. The lens also features a front and back coating of THo AC400-700-A, which enhances its transmission capabilities in the specified spectral range.
The AC254-400-A is currently in stock and available for immediate purchase through the Thorlabs website. Its catalog number is AC254-400-A, and it is classified as a multiplet lens due to its dual-element design.
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