AC127-025-AB 12.7 mm Dia. N-LAK10/N-SF57 Unmounted Achromatic Doublet; EFL=25mm 400-1100nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- R1
- 19.1 mm
- R2
- -17.8 mm
Material 1
- Name
- N-LAK10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7230611635507604
- λ
- 550 nm
- B1
- 1.72878017
- C1
- 0.00886014635 μm2
- B2
- 0.169257825
- C2
- 0.0363416509 μm2
- B3
- 1.19386956
- C3
- 82.9009069 μm2
Material 2
- Name
- N-SF57
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.854148364121864
- λ
- 550 nm
- B1
- 1.87543831
- C1
- 0.0141749518 μm2
- B2
- 0.37375749
- C2
- 0.0640509927 μm2
- B3
- 2.30001797
- C3
- 177.389795 μm2
AC127-025-AB 12.7 mm Dia. N-LAK10/N-SF57 Unmounted Achromatic Doublet; EFL=25mm 400-1100nm
The AC127-025-AB is a high-quality unmounted achromatic doublet lens, meticulously crafted by Thorlabs. This lens boasts a 12.7 mm diameter and is designed for use within the 400-1100nm spectral range, making it a versatile choice for a wide array of optical applications.
The lens is constructed from two distinct materials, N-LAK10 and N-SF57, both from Schott. These materials have been carefully selected to optimize the lens's performance, particularly in terms of chromatic aberration correction. The lens features a focal length of 25mm, denoted as EFL (Effective Focal Length), which is a critical parameter in determining the lens's magnification and field of view.
The lens's geometry is intricately designed, with an edge thickness of 4.6mm and a central thickness of 4mm for the first material, and a central thickness of 2mm for the second. The lens's curvature is also precisely controlled, with radii of 19.1mm, -17.8mm, and -82.3mm, contributing to its excellent optical performance.
The lens is coated with Thorlabs' proprietary Anti-Reflection (AR) coating, both on the front and back surfaces. This coating enhances the lens's transmission capabilities, reduces surface reflections, and increases overall system efficiency.
