LA5255-E 25.4 mm Dia. CaF2 Plano-Convex Lens; EFL=250mm 2-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 250 mm
- R1
- 108.5 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
LA5255-E 25.4 mm Dia. CaF2 Plano-Convex Lens; EFL=250mm 2-5µm
The LA5255-E is a Plano-Convex lens with a diameter of 25.4 mm, designed for use in the 2-5 µm wavelength range. This lens is sourced from Thorlabs, a reputable vendor known for its high-quality optical components. The Plano-Convex geometry, characterized by a flat front surface and a curved back surface, is ideal for a wide range of applications.
The lens has an effective focal length (EFL) of 250 mm, which is the distance from the lens's center to the focal point. This EFL makes it suitable for applications that require a long focal length. The lens's thickness at the edge is 2 mm, while its center thickness is 2.7 mm, providing a robust structure for various optical setups.
The LA5255-E is made of Calcium Fluoride (CaF2), a material with a high transmission range in the infrared spectrum, making it ideal for applications in this wavelength range. The lens is coated with AR coating (tho ecaf2arc20005000) on both the front and back surfaces, reducing reflection and increasing transmission.
This lens is currently in stock, according to the vendor's website, and more information can be found at https://www.thorlabs.com/thorproduct.cfm?partnumber=LA5255-E.