KBX169AR.18 50.8 mm Dia. x 250 mm FL; IR coated; Double-Convex Lens IR 1000-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 250 mm
- BFL
- 248.17 mm
- R1
- 257.46 mm
- R2
- -257.46 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
KBX169AR.18 50.8 mm Dia. x 250 mm FL; IR coated; Double-Convex Lens for IR 1000-1550nm
This KBX169AR.18 lens, sourced from MKS/Newport, is a high-quality optical component designed for use in the infrared spectrum, specifically between 1000nm and 1550nm. It is a Spherical Lens, featuring a Convex-Convex base shape, which makes it ideal for a wide range of applications that require precise focusing and imaging capabilities.
The lens has a diameter of 50.8mm, providing a substantial surface area for light transmission. The edge thickness is 3mm, while the center thickness is 5.512mm, ensuring robustness and durability. The effective focal length (EFL) of this lens is 250mm, which, combined with its diameter, offers a wide field of view and excellent image quality.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and chemical resistance. The front and back surfaces of the lens are coated with New AR-18, a broadband anti-reflective coating designed for use in the infrared spectrum. This coating reduces surface reflections, enhancing the lens's transmission efficiency and overall performance.
The lens's geometry includes a first radius (R1) of 257.464mm and a second radius (R2) of -257.464mm, which contribute to its double-convex shape. The back focal length (BFL) is 248.17mm, and both the inner and outer radii are 0mm.