LF7589-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-750mm 8-12µm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -750 mm
- BFL
- -742 mm
- R1
- 219.6 mm
- R2
- 179.7 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
LF7589-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-750mm 8-12µm
The LF7589-F is a spherical lens with a concave-convex base shape and a circular geometry. It has a diameter of 25.4 mm and a thickness at the edge of 4.1 mm, while the center thickness is 4 mm. The effective focal length (EFL) of this lens is -750 mm, and it has a back focal length (BFL) of -742 mm. The inner and outer radii are both 0 mm.
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 comes with anti-reflection coatings on both the front and back surfaces, specifically the THo ZnSe-ARCED 8-12 coating, which is optimized for the 8-12 µm spectral range.
The lens is sourced from Thorlabs, a reputable vendor in the optical industry. According to the vendor's website, the lens is currently in stock, indicating its availability for immediate purchase and use. The link to the vendor's webpage for this item is provided for convenience and further information.