LA5255-D 25.4 mm Dia. CaF2 Plano-Convex Lens; EFL=250mm 1.65-3µm
- 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-D 25.4 mm Dia. CaF2 Plano-Convex Lens; EFL=250mm 1.65-3µm
The LA5255-D is a Plano-Convex lens with a diameter of 25.4 mm, designed for use in the infrared spectrum with a wavelength of 588 nm. Manufactured by Thorlabs, a leading vendor in the optical industry, this lens is made from Calcium Fluoride (CaF2) material, specifically identified as "caf2 mal-1963".
The lens geometry features an edge thickness of 2 mm and a center thickness of 2.7 mm. The Effective Focal Length (EFL) is 250 mm, making it suitable for applications requiring a longer focal length. The front and back surfaces of the lens are coated with a broadband anti-reflection coating, denoted as "tho d bbar", which enhances transmission and reduces surface reflections.
The lens's shape is spherical, with a radius of curvature (R1) of 108.5 mm on the convex side. The inner and outer radii are both zero, indicating a plano surface on the opposite side. This lens is currently in stock, as indicated by its weblink status, and more information can be found on the Thorlabs website.
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