LF7053-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-75mm 8-12µm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -75 mm
- BFL
- -66.6 mm
- R1
- 21 mm
- R2
- 15.5 mm
Material
- Name
- ZnSe
- Dispersion Equation
- Sellmeier
- n (λ)
- 2.402780893783937
- λ
- 10600 nm
- B1
- 4.45813734
- C1
- 0.040344681 μm2
- B2
- 0.467216334
- C2
- 0.15317139 μm2
- B3
- 2.8956629
- C3
- 2221.822369 μm2
LF7053-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-75mm 8-12µm
The LF7053-F is a spherical lens with a concave-convex base shape and a circular geometry. This lens, sourced from Thorlabs, has a diameter of 25.4 mm and a thickness at the edge of 6.3 mm, while the center thickness is 4 mm. The effective focal length (EFL) of this lens is -75 mm, and it has a back focal length (BFL) of -66.6 mm. The radii of curvature for the first and second surfaces are 21 mm and 15.5 mm, respectively.
This lens is made of ZnSe (Zinc Selenide) material, specifically the ZnSe Connolly variant. It is designed to operate at a wavelength of 10600 nm. The lens features anti-reflective coatings on both the front and back surfaces, specifically the Thorlabs ZnSe-ARCed 8-12 coating, which is optimized for the 8-12 µm spectral range.
Please note that the inner and outer radii are both 0, indicating that this lens does not have any special shaping or features on its edges. The lens's shape is purely spherical, which is typical for most optical lenses.
For more information, including availability and pricing, please refer to the vendor's website using the provided web link.
