LF5807-E 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-750mm 2-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -750 mm
- BFL
- -747.3 mm
- R1
- 328.2 mm
- R2
- 158.1 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
LF5807-E 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-750mm 2-5µm
The LF5807-E is a spherical lens with a concave-convex base shape and a circular geometry, 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 4.3 mm. The effective focal length (EFL) is -750mm, designed for use with a wavelength of 4000 nm.
The lens is constructed from CaF2 (Calcium Fluoride) material, identified as "caf2 mal-1963" in the material database. This material is known for its excellent transparency in the ultraviolet, visible, and near-infrared spectral regions. The lens features a double-sided anti-reflection coating, denoted as "tho ecaf2arc20005000", which enhances transmission in the 2000-5000 nm wavelength range.
The LF5807-E has an inner radius of 0 mm and an outer radius of 0 mm, indicating a meniscus shape. The front and back radii are 328.2 mm and 158.1 mm, respectively, and the back focal length (BFL) is -747.3 mm. This lens is currently in stock and available for immediate purchase through the provided weblink.
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