LF4370 25.4 mm Dia. UVFS Negative Meniscus Lens; EFL=-150mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -150 mm
- BFL
- -149.1 mm
- R1
- 150 mm
- R2
- 47 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
LF4370 25.4 mm Dia. UVFS Negative Meniscus Lens; EFL=-150mm Uncoated
The LF4370 is a spherical lens from Thorlabs, featuring a concave-convex base shape and a circular geometry. With a diameter of 25.4 mm, this lens is designed for use in optical systems that require a negative meniscus lens. The lens's thickness at the edge is 4.2 mm, while its center thickness is 3 mm, providing a robust and stable platform for optical applications.
The effective focal length (EFL) of the LF4370 is -150 mm, making it suitable for applications that require a strong converging or diverging lens. The first radius of curvature (R1) is 150 mm, and the second radius of curvature (R2) is 47 mm, contributing to its meniscus shape. The back focal length (BFL) is -149.1 mm, indicating that the lens's focal point is located in front of the lens.
This lens is made from UVFS material with the Mal-1965 index, ensuring high transparency and durability. The lens is uncoated, which may affect its transmission and reflection characteristics depending on the application. The wavelength of operation is 546 nm.