LA0270-E 25.4 mm Dia. BaF2 Plano-Convex Lens; EFL=75mm 2-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 75 mm
- R1
- 34.3 mm
Material
- Name
- BAF2
- Dispersion Equation
- Schott
- n (λ)
- 1.5159981949483772
- λ
- 4000 nm
- A
- 2.41667247
- B
- -0.00746725517 μm-2
- C
- 0.0168668464 μm2
- D
- -0.0000129697272 μm4
- E
- 0.00005159926024 μm6
- F
- -0.00000181803614 μm8
- G
- 0 μm10
- H
- 0 μm12
LA0270-E 25.4 mm Dia. BaF2 Plano-Convex Lens; EFL=75mm 2-5µm
The LA0270-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 their high-quality optical components.
The lens is made from Barium Fluoride (BaF2), a material with a high transmission range, making it ideal for infrared applications. The lens has an effective focal length (EFL) of 75 mm, which is the distance from the lens's center to the focal point when the lens is imaging an object at infinity.
The lens's geometry includes a thickness of 2 mm at the edge and 4.4 mm at the center. The front surface of the lens has a radius of curvature of 34.3 mm, while the back surface is planar. The lens's design is spherical, which is a common shape for optical lenses due to its ease of manufacturing and good imaging performance.
The LA0270-E is coated with Thorlabs' EBAF2ARC20005000 coating on both the front and back surfaces. This anti-reflection coating is designed to reduce surface reflections and increase transmission in the 2-5 µm wavelength range.