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LE7199-F 25.4 mm Dia. ZnSe Positive Meniscus Lens; EFL=1000mm 8-12µm

LE7199-F 25.4 mm Dia. ZnSe Positive Meniscus Lens; EFL=1000mm 8-12µm

Type
Lens
Subtype
Spherical Lens (Convex-Concave)
Brand
Thorlabs
Product webpage
Thorlabs products in the 3DOptix catalog

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.

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