LE1418-B 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=150mm 650-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 150 mm
- BFL
- 141.7 mm
- R1
- 47.9 mm
- R2
- 119.3 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
LE1418-B 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=150mm 650-1050nm
The LE1418-B is a spherical lens with a base shape of a circle, sourced from the reputable vendor Thorlabs. This positive meniscus lens, with a diameter of 50.8 mm, is designed for use within the wavelength range of 650-1050nm, making it suitable for a wide range of optical applications.
The lens features an effective focal length (EFL) of 150mm, which is the distance from the lens's center to the focal point when the lens is imaging an object at infinity. This EFL, combined with the lens's geometry, makes it a versatile tool in optical systems.
The geometry of the lens includes a thickness at the edge of 2.7 mm and a center thickness of 7.3 mm. The first radius of curvature (R1) is 47.9 mm, while the second radius (R2) is 119.3 mm. The back focal length (BFL) is 141.7 mm, and both the inner and outer radii are 0 mm.
The LE1418-B is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and wide transmission range. The lens is coated with THo BBAR on both the front and back surfaces, which enhances its performance by reducing reflection and increasing transmission.
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