LB5864-E 12.7 mm Dia. CaF2 Double-Convex Lens; EFL=40mm 2-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 40 mm
- R1
- 34.2 mm
- R2
- -34.2 mm
Material
- Name
- CaF2
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4338389315589535
- λ
- 588 nm
- B1
- 0.5675888
- C1
- 0.00252643 μm2
- B2
- 0.4710914
- C2
- 0.010078333 μm2
- B3
- 3.8484723
- C3
- 1200.555973 μm2
LB5864-E 12.7 mm Dia. CaF2 Double-Convex Lens; EFL=40mm 2-5µm
The LB5864-E is a high-quality spherical lens from Thorlabs, featuring a double-convex design with a calcium fluoride (CaF2) core. This lens is designed for use in the 2-5 µm wavelength range, making it suitable for a variety of infrared applications. The lens has a diameter of 12.7 mm and an effective focal length (EFL) of 40 mm, providing a compact yet powerful optical solution.
The lens geometry includes a thickness of 2 mm at the edge and 3.2 mm at the center, with a radii of curvature of 34.2 mm for both the front and back surfaces. This design results in a spherical shape that provides excellent image quality and low distortion. The lens is uncoated, but it can be ordered with anti-reflection coatings upon request.
The LB5864-E is available from Thorlabs and is currently in stock, according to the vendor's website. The lens is part of a wide range of optical components offered by Thorlabs, a leading manufacturer of precision photonics equipment.