LB5454-E 25.4 mm Dia. CaF2 Double-Convex Lens; EFL=200mm 2-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 200 mm
- R1
- 173.1 mm
- R2
- -173.1 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
LB5454-E 25.4 mm Dia. CaF2 Double-Convex Lens; EFL=200mm 2-5µm
The LB5454-E is a high-quality spherical lens from Thorlabs, featuring a double-convex design with a calcium fluoride (CaF2) core. This lens boasts a diameter of 25.4 mm and an effective focal length (EFL) of 200mm, making it suitable for a wide range of applications that require precise optical control in the 2-5µm wavelength range.
The lens geometry is characterized by its edge thickness of 2mm and center thickness of 2.9mm, ensuring robustness and durability. The radii of curvature for the first and second surfaces are 173.1mm and -173.1mm respectively, indicating a symmetric design that minimizes optical aberrations. The lens does not have an inner or outer radius, further enhancing its optical performance.
The LB5454-E is made from CaF2, a material with a high damage threshold and excellent transmission properties in the mid-infrared region. This makes it an ideal choice for applications that require high-power lasers or operate in the 2-5µm spectral range. The lens is coated with tho ecaf2arc20005000 on both the front and back surfaces, providing enhanced antireflection properties and improving overall system efficiency.