KBC076AR.18 50.8 mm Dia. x -200 mm FL; IR coated; Double-Concave Lens 1000-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- -200 mm
- BFL
- -200.82 mm
- R1
- -207.15 mm
- R2
- 207.15 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
KBC076AR.18 50.8 mm Dia. x -200 mm FL; IR coated; Double-Concave Lens 1000-1550nm
The KBC076AR.18 is a high-quality double-concave lens, designed and manufactured by MKS/Newport. This lens boasts a diameter of 50.8 mm and a focal length of -200 mm, making it suitable for a wide range of applications. The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and chemical resistance.
The KBC076AR.18 features a unique double-concave geometry, with radii of curvature of -207.148 mm for the first surface and 207.148 mm for the second surface. This geometry results in a back focal length of -200.82 mm, providing a compact and efficient optical solution. The lens has a central thickness of 2.5 mm and an edge thickness of 5.03 mm, ensuring robustness and durability.
The lens is coated with New AR-18, a broadband anti-reflective coating designed for the 1000-1550 nm wavelength range. This coating significantly reduces surface reflections, improving transmission and enhancing overall system performance. The coating is applied to both the front and back surfaces of the lens, ensuring optimal performance from all angles.