LF4986-UV 25.4 mm Dia. UVFS Negative Meniscus Lens; EFL=-1000mm UV 245-400nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -1000 mm
- BFL
- -995.7 mm
- R1
- 300 mm
- R2
- 180.8 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4600813135725972
- λ
- 546 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
LF4986-UV 25.4 mm Dia. UVFS Negative Meniscus Lens; EFL=-1000mm UV 245-400nm
The LF4986-UV is a spherical lens from Thorlabs, designed with a concave-convex base shape and a circular geometry. This lens has a diameter of 25.4 mm and a thickness of 4.2 mm at the edge, tapering down to 4 mm at the center. The effective focal length (EFL) of this lens is -1000mm, making it a negative meniscus lens. The front and back surfaces of the lens are coated with "tho uv uv arc 245400", a coating specifically designed for UV applications within the wavelength range of 245-400nm. The lens material is UVFS, with the specific ID being "1965". The radius of curvature for the first surface (R1) is 300mm, while for the second surface (R2) it is 180.8mm. The back focal length (BFL) of the lens is -995.7mm. The inner and outer radii are both 0, indicating a uniform curvature across the lens surface. This lens is currently in stock and available for purchase through the Thorlabs website.
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