LF5048 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-500mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -500 mm
- BFL
- -497.3 mm
- R1
- 218.3 mm
- R2
- 105.1 mm
Material
- Name
- CaF2
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4096399504333625
- λ
- 4000 nm
- B1
- 0.5675888
- C1
- 0.00252643 μm2
- B2
- 0.4710914
- C2
- 0.010078333 μm2
- B3
- 3.8484723
- C3
- 1200.555973 μm2
LF5048 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-500mm Uncoated
The LF5048 is a spherical lens with a concave-convex base shape and a circular design, sourced from the reputable vendor Thorlabs. This lens boasts a diameter of 25.4 mm and a center thickness of 4 mm, with an edge thickness of 4.4 mm. The effective focal length (EFL) of this lens is -500mm, making it a negative meniscus lens.
The lens is crafted from Calcium Fluoride (CaF2) with the material ID mal-1963. This material is well-suited for applications in the ultraviolet, visible, and near-infrared spectra, making the LF5048 a versatile choice for various optical systems. The lens is uncoated, which can be beneficial for specific applications where anti-reflection coatings may not be required or desirable.
The lens's inner and outer radii are both 0, and its back focal length (BFL) is -497.3 mm. The first radius of curvature (R1) is 218.3 mm, and the second radius of curvature (R2) is 105.1 mm. The wavelength for this lens is 4000 nm.