LE7199-F 25.4 mm Dia. ZnSe Positive Meniscus Lens; EFL=1000mm 8-12µm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 1000 mm
- BFL
- 992 mm
- R1
- 293 mm
- R2
- 367.5 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
LE7199-F 25.4 mm Dia. ZnSe Positive Meniscus Lens; EFL=1000mm 8-12µm
The LE7199-F is a spherical lens with a convex-concave design, sourced from Thorlabs. This lens boasts a 25.4 mm diameter and is constructed from ZnSe material, specifically the ZnSe CONNOLLY variant. The lens features a positive meniscus shape, with a center thickness of 4 mm and an edge thickness of 3.9 mm.
The lens has an effective focal length (EFL) of 1000mm, designed to operate within the 8-12 µm wavelength range. The front and back surfaces of the lens are coated with THo ZnSe-ARCED 8-12, a specialized anti-reflective coating that enhances performance within the specified wavelength range.
The lens geometry includes an inner radius of 0 and an outer radius of 0, with a back focal length (BFL) of 992mm. The lens is circular in base shape and is available for immediate use, as indicated by its valid web link status.
This lens is an excellent choice for applications that require a high-performance ZnSe lens with a positive meniscus shape and a long effective focal length.