KBC073AR.18 50.8 mm Dia. x -250 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
- -250 mm
- BFL
- -250.82 mm
- R1
- -258.82 mm
- R2
- 258.82 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
KBC073AR.18 50.8 mm Dia. x -250 mm FL; IR coated; Double-Concave Lens 1000-1550nm
The KBC073AR.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 -250 mm, making it suitable for a wide range of optical applications.
The lens is constructed from N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The base shape of the lens is circular, and it features a double-concave geometry, with radii of curvature R1 and R2 measured at -258.824 mm and 258.824 mm respectively. The lens has a central thickness of 2.5 mm and an edge thickness of 4.52 mm, providing robustness and durability.
The KBC073AR.18 lens is coated with New AR-18, a broadband anti-reflective coating designed for the 1000-1550nm wavelength range. This coating significantly reduces surface reflections, enhancing the overall transmission of the lens. The coating is applied to both the front and back surfaces of the lens.
This lens is currently in stock and available for immediate purchase. For more detailed information, please refer to the vendor's website at https://www.newport.com/f/ar18-n-bk7-bi-concave-lenses.