LA1254-A N-BK7 Plano-Convex Lens; Dia:1 in; f=1500.0 mm ARC 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 1500 mm
- BFL
- 1498.6 mm
- R1
- 775.2 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
LA1254-A N-BK7 Plano-Convex Lens; Dia:1 in; f=1500.0 mm ARC 350-700nm
The LA1254-A is a plano-convex lens made from N-BK7 glass, a popular material for optical elements due to its excellent optical properties. This lens, sourced from Thorlabs, has a diameter of 1 inch (25.4 mm) and a focal length of 1500 mm, making it suitable for applications that require long focal lengths.
The lens's geometry includes a thickness of 2 mm at the edge and 2.1 mm at the center. The effective focal length (EFL) is 1500 mm, while the radius of curvature (R1) is 775.2 mm. The back focal length (BFL) is 1498.6 mm, and both the inner and outer radii are 0. The lens's shape is spherical, which is a common shape for optical elements due to its ease of manufacturing and good optical performance.
The LA1254-A is coated with ARC 350-700nm on both the front and back surfaces. This anti-reflection coating reduces losses due to reflection and increases the lens's transmission in the specified wavelength range.
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