LB1391-A N-BK7 Bi-Convex Lens; Dia:1 in; f=400.0 mm ARC 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 400 mm
- BFL
- 399.2 mm
- R1
- 411.7 mm
- R2
- -411.7 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5150823520020043
- λ
- 633 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LB1391-A N-BK7 Bi-Convex Lens; Dia:1 in; f=400.0 mm ARC 350-700nm
The LB1391-A is a high-quality bi-convex lens made from N-BK7 glass, a popular material for optical elements due to its excellent optical properties. This lens, sourced from Thorlabs, features a diameter of 1 inch and a focal length of 400.0 mm, making it suitable for a wide range of applications.
The lens's geometry includes a thickness of 2 mm at the edge and 2.4 mm at the center, with a back focal length of 399.2 mm. The inner and outer radii are 0, indicating a symmetrical design. The lens's shape is spherical, a common choice for its simplicity and versatility.
The LB1391-A is coated with ARC 350-700nm on both the front and back surfaces, enhancing its performance in the specified wavelength range. This anti-reflective coating reduces unwanted reflections and increases transmission, improving the lens's overall efficiency.
The lens's material, N-BK7, is known for its low dispersion and high homogeneity, making it an excellent choice for applications requiring high image quality and precision. The lens's bi-convex design, where both surfaces are convex, provides a large field of view and low spherical aberration.
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