LA1256-A N-BK7 Plano-Convex Lens; Dia:2 in; f=300.0 mm ARC 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 300 mm
- BFL
- 295.6 mm
- R1
- 154.5 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LA1256-A N-BK7 Plano-Convex Lens; Dia:2 in; f=300.0 mm ARC 350-700nm
The LA1256-A is a high-quality plano-convex lens made from N-BK7 glass, a popular material in the optical industry due to its excellent optical properties. This lens, sourced from Thorlabs, features a diameter of 2 inches (50.8 mm) and a focal length of 300.0 mm, making it suitable for a wide range of applications.
The lens's geometry includes a thickness of 3 mm at the edge and 5.1 mm at the center. The front surface has a radius of curvature (R1) of 154.5 mm, while the back focal length (BFL) is 295.6 mm. The lens's effective focal length (EFL) is 300.0 mm, which is the distance from the lens's center to the focal point.
The LA1256-A is coated with ARC 350-700nm, a broadband anti-reflection coating that reduces reflection across the visible spectrum (350-700 nm). This coating enhances the lens's performance by increasing transmission and reducing unwanted reflections.
The lens's shape is spherical, which is a common shape for optical lenses due to its ease of manufacturing and good optical performance. The lens is designed to be used in air, with an index of refraction of 1.000293.
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