AC127-075-A 12.7 mm Dia. N-BK7/SF2 Unmounted Achromatic Doublet; EFL=75mm 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- R1
- 41.3 mm
- R2
- -34 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
AC127-075-A 12.7 mm Dia. N-BK7/SF2 Unmounted Achromatic Doublet; EFL=75mm 400-700nm
The AC127-075-A is a high-quality achromatic doublet lens, unmounted and sourced from Thorlabs. This lens is designed for use in the 400-700nm spectral range, making it suitable for a wide range of optical applications. The lens features a 12.7 mm diameter and an effective focal length (EFL) of 75mm, providing a compact and efficient optical solution.
The lens is composed of two elements, made from N-BK7 and SF2 Schott glass respectively. These materials are chosen for their excellent optical properties, contributing to the lens' high performance. The lens also features a broadband anti-reflection coating (AR), specifically the tho ac400-700-a coating, on both the front and back surfaces. This coating reduces surface reflections, thereby increasing transmission and improving overall system performance.
The lens geometry is intricately designed with three radii of curvature (r1, r2, r3) and two central thicknesses. The first element has radii r1 and r2, and a central thickness of 2.5mm. The second element has a radius of r3 and a central thickness of 1.5mm. The edge thickness of the lens is 3.4mm. The lens is designed in a circular shape, providing a wide field of view and symmetry in optical systems.
