LF5469 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-40mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -40 mm
- BFL
- -39.9 mm
- R1
- 308.3 mm
- R2
- 15.5 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
LF5469 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-40mm Uncoated
The LF5469 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 10.4 mm. The effective focal length (EFL) is -40 mm, making it a negative meniscus lens.
The lens is crafted from Calcium Fluoride (CaF2) with the material ID mal-1963. It is designed to operate at a wavelength of 4000 nm. The first radius of curvature (r1) is 308.3 mm, while the second radius (r2) is 15.5 mm. The back focal length (bfl) is -39.9 mm. Notably, the lens does not have any coating, as indicated in the item data.
This lens is a versatile optical component, suitable for various applications that require a negative meniscus lens. Its uncoated design provides users with the flexibility to apply their preferred coatings based on their specific requirements. As a product of Thorlabs, users can expect high-quality materials and precise manufacturing, ensuring reliable and consistent performance.
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