KBX169AR.33 50.8 mm Dia. x 250 mm FL; Double-Convex Lens Laser V-Coat 1064nm
- 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.33 50.8 mm Dia. x 250 mm FL; Double-Convex Lens Laser V-Coat 1064nm
The KBX169AR.33 is a high-quality double-convex 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 made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and chemical durability. The base shape of the lens is circular, and it features a double-convex geometry, with radii of curvature of 257.464 mm for the first surface and -257.464 mm for the second surface. This geometry results in a high numerical aperture, enhancing the lens's light-gathering capability.
The KBX169AR.33 is coated with New AR-33, a broadband anti-reflection coating designed for use in the visible and near-infrared regions. This coating significantly reduces surface reflections, improving the lens's transmission and overall performance. The coating is applied to both the front and back surfaces of the lens.
The lens has a thickness of 3 mm at the edge and 5.512 mm at the center. The back focal length is 248.17 mm, and the effective focal length is 250 mm. The lens is designed to operate at a wavelength of 589 nm, but due to its broadband coating, it can be used in a wider spectral range.