LF7573-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-1000mm 8-12µm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -1000 mm
- BFL
- -992 mm
- R1
- 293 mm
- R2
- 240.5 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
LF7573-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-1000mm 8-12µm
The LF7573-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 of 4.1 mm at the edge, tapering down to 4 mm at the center. The effective focal length (EFL) of this lens is -1000mm, making it a negative meniscus lens. The back focal length (BFL) is -992mm, and the radii of curvature for the front and back surfaces are 293mm and 240.5mm respectively.
This lens is made of ZnSe (Zinc Selenide) material, specifically the ZnSe Connolly variant, and 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 use in 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 item data also provides a weblink to the product page on Thorlabs' website for further reference and detailed specifications.
