LE5656-E 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=750mm 2-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 750 mm
- BFL
- 744.2 mm
- R1
- 150 mm
- R2
- 290.8 mm
Material
- Name
- CaF2
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4096399504333625
- λ
- 4000 nm
- B1
- 0.5675888
- C1
- 0.00252643 μm2
- B2
- 0.4710914
- C2
- 0.010078333 μm2
- B3
- 3.8484723
- C3
- 1200.555973 μm2
LE5656-E 25.4 mm Dia. CaF2 Positive Meniscus Lens; EFL=750mm 2-5µm
The LE5656-E is a Spherical Lens (Convex-Concave) with a base shape of Circular, designed and manufactured by Thorlabs. This lens boasts a diameter of 25.4 mm and a thickness edge of 3.7 mm, with a thickness center of 4 mm. The Effective Focal Length (EFL) is 750mm, specifically designed for the wavelength of 4000 nm.
The lens is made of CaF2 (Calcium Fluoride) material, identified as "caf2 mal-1963" in the Material ID. The front and back of the lens are coated with "tho ecaf2arc20005000", providing optimal performance and durability.
The geometry of the lens includes an Inner Radius of 0 and an Outer Radius of 0. The Back Focal Length (BFL) is 744.2 mm, and the Radius of Curvature for the first surface (R1) is 150 mm, while for the second surface (R2) it is 290.8 mm.
The lens is currently in stock and available for immediate purchase through the provided weblink. Thorlabs, a reputable vendor in the optical industry, guarantees the quality and performance of this product.
More Lens
