LA7261-E3 25.4 mm Dia. ZnSe Plano-Convex Lens; EFL=100.2mm 7-12µm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 100.2 mm
- R1
- 140.5 mm
Material
- Name
- ZnSe
- Dispersion Equation
- Sellmeier
- n (λ)
- 2.402780893783937
- λ
- 10600 nm
- B1
- 4.45813734
- C1
- 0.040344681 μm2
- B2
- 0.467216334
- C2
- 0.15317139 μm2
- B3
- 2.8956629
- C3
- 2221.822369 μm2
LA7261-E3 25.4 mm Dia. ZnSe Plano-Convex Lens; EFL=100.2mm 7-12µm
The LA7261-E3 is a 25.4 mm diameter Plano-Convex lens made of ZnSe material, sourced from Thorlabs. This lens is designed for use in the 7-12 µm wavelength range, making it suitable for a variety of infrared applications. The lens has a focal length of 100.2 mm, which is a common choice for imaging systems due to its ability to produce a relatively large image without significant aberrations.
The lens geometry includes a 3.4 mm thickness at the edge and a 4 mm thickness at the center. The front surface of the lens has a radius of curvature of 140.5 mm, while the back surface is planar. This asymmetry in surface curvature contributes to the lens's focusing power. The lens is spherical in shape, which is a common and cost-effective choice for many optical applications.
The LA7261-E3 is coated with Thorlabs' E3AR ZnSe Anti-Reflection coating, which is designed to reduce surface reflections and increase transmission in the 7-12 µm wavelength range. This coating is applied to both the front and back surfaces of the lens.
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