KPX208AR.18 50.8 mm Dia. x 400 mm FL; IR coated; Plano-Convex Lens IR 1000-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 400 mm
- BFL
- 396.98 mm
- R1
- 206.72 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167401204613524
- λ
- 589 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
KPX208AR.18 50.8 mm Dia. x 400 mm FL; IR coated; Plano-Convex Lens IR 1000-1550nm
This is a Plano-Convex Lens, type KPX208AR.18, sourced from MKS/Newport. It is designed for use in the infrared spectrum, specifically between 1000nm and 1550nm. The lens has a diameter of 50.8mm and a focal length of 400mm, making it suitable for a wide range of optical applications.
The lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The base shape is circular, and the lens features a plano-convex geometry. The thickness at the edge of the lens is 3mm, while the thickness at the center is 4.566mm. The effective focal length (EFL) is 400mm, and the radius of curvature (R1) is 206.72mm. The back focal length (BFL) is 396.98mm, and the inner radius is 0mm.
The lens is coated with New AR-18 fromfigure on both the front and back surfaces. This anti-reflective coating enhances the lens' performance in the infrared spectrum by reducing surface reflections and increasing transmission. The coating is specifically designed for use in the 1000-1550nm range.