LF5067-E 12.7 mm Dia. CaF2 Negative Meniscus Lens; EFL=-20mm 2-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- -20 mm
- BFL
- -19.9 mm
- R1
- 95.6 mm
- R2
- 7.5 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
LF5067-E 12.7 mm Dia. CaF2 Negative Meniscus Lens; EFL=-20mm 2-5µm
The LF5067-E is a spherical lens with a concave-convex base shape and a circular design, sourced from the reputable vendor Thorlabs. This lens boasts a 12.7 mm diameter and a negative meniscus geometry, making it an ideal choice for specific optical applications.
The lens's thickness varies from 2 µm at the center to 5.3 µm at the edge, providing a unique profile that can contribute to the overall performance of an optical system. The effective focal length (EFL) is -20 mm, which is a crucial specification for determining the lens's focusing capabilities.
The lens is crafted from CaF2 (Calcium Fluoride) material, identified as "caf2 mal-1963" in the Material ID. This material is known for its excellent transparency in the ultraviolet, visible, and near-infrared regions of the spectrum, making the LF5067-E suitable for a wide range of wavelengths, including up to 4000 nm, as specified in the item data.
The lens features a broadband anti-reflection coating on both the front and back surfaces. This coating, identified as "tho ecaf2arc20005000", is designed to minimize surface reflections and increase transmission, thereby enhancing the overall efficiency and performance of the lens.
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