LF5847 12.7 mm Dia. CaF2 Negative Meniscus Lens; EFL=-50mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- -50 mm
- BFL
- -47.9 mm
- R1
- 20.4 mm
- R2
- 9.8 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
LF5847 12.7 mm Dia. CaF2 Negative Meniscus Lens; EFL=-50mm Uncoated
The LF5847 is a spherical lens from Thorlabs, featuring a concave-convex base shape and a circular geometry. With a diameter of 12.7 mm, this lens is designed to work with a wavelength of 4000 nm. The lens's thickness at the edge is 4.3 mm, while its center thickness measures 3 mm. The effective focal length (EFL) is -50 mm, and the first radius of curvature (r1) is 20.4 mm, while the second radius of curvature (r2) is 9.8 mm. The back focal length (bfl) is -47.9 mm.
The lens is made of CaF2 (Calcium Fluoride) material, identified as mal-1963 in the Material ID. Notably, this lens does not have any coating, as indicated in the coating parameter. The item data indicates that this product is in stock and available for purchase, with a direct weblink provided for user convenience.
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