KBX148AR.18 50.8 mm Dia. x 75.6 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
- 75.6 mm
- BFL
- 71.63 mm
- R1
- 76.09 mm
- R2
- -76.09 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
KBX148AR.18 50.8 mm Dia. x 75.6 mm FL; IR coated; Double-Convex Lens for IR 1000-1550nm
This KBX148AR.18 lens, sourced from MKS/Newport, is a Spherical Lens (Convex-Convex) with a base shape of Circular. It boasts a diameter of 50.8 mm and a thickness edge of 3 mm, while its thickness center measures 11.729 mm. The Effective Focal Length (EFL) is 75.6 mm, and the Radius of Curvature (RoC) for both the first and second surfaces are 76.09 mm and -76.09 mm respectively. The Back Focal Length (BFL) is 71.63 mm, with an Inner Radius of 0 mm and an Outer Radius of 0 mm.
The lens is made of N-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost. The wavelength for this lens is 589 nm. The lens features New AR-18 fromfigure coating on both the front and back surfaces, designed for the infrared spectrum of 1000-1550 nm. This coating enhances the lens's performance by reducing reflection and increasing transmission in the specified wavelength range.
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