LF7134-F 12.7 mm Dia. ZnSe Negative Meniscus Lens; EFL=-20mm 8-12µm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- -20 mm
- BFL
- -18.2 mm
- R1
- 12.6 mm
- R2
- 7.9 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
LF7134-F 12.7 mm Dia. ZnSe Negative Meniscus Lens; EFL=-20mm 8-12µm
The LF7134-F is a spherical lens with a concave-convex base shape and a circular design, sourced from the reputable vendor Thorlabs. This lens boasts a diameter of 12.7 mm and a center thickness of 2 mm, with an edge thickness of 3.5 mm. The effective focal length (EFL) is -20 mm, making it a negative meniscus lens.
The lens is constructed from ZnSe (Zinc Selenide) material, specifically identified as "znse connolly" in the material database. It is designed to operate at a wavelength of 10600 nm. The lens features anti-reflection coatings on both the front and back surfaces, specifically "tho znse-arced 8-12", which are optimized for the 8-12 µm spectral range.
The lens's geometry includes an inner radius of 0 mm and an outer radius of 0 mm. The first radius of curvature (R1) is 12.6 mm, while the second radius of curvature (R2) is 7.9 mm. The back focal length (BFL) is -18.2 mm.
This lens is a valuable addition to any optical system requiring a negative meniscus lens with specific wavelength and coating requirements. Its high-quality construction and precise specifications make it a reliable choice for various applications.