KBX139 50.8 mm Dia. x 38.1 mm FL; Uncoated; Double-Convex Lens
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- 38.1 mm
- BFL
- 28.54 mm
- R1
- 34.44 mm
- R2
- -34.44 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
KBX139 50.8 mm Dia. x 38.1 mm FL; Uncoated; Double-Convex Lens
The KBX139 is a high-quality, double-convex lens offered by MKS/Newport. This lens, which features a Schott N-BK7 material ID, is designed for use in a wide range of optical applications. The lens has a diameter of 50.8 mm and a focal length of 38.1 mm, making it suitable for systems that require a long focal length.
The KBX139 lens is spherical in shape, with a base shape of circular. The geometry of the lens includes an edge thickness of 3 mm and a center thickness of 25.36 mm. The lens's effective focal length (EFL) is 38.1 mm, and its back focal length (BFL) is 28.54 mm. The lens's inner and outer radii are both 0, indicating a symmetrical design.
This lens is uncoated, which means it does not have any anti-reflective or other coatings applied to its surfaces. While coatings can enhance the performance of a lens in certain applications, an uncoated lens can be a cost-effective solution when such enhancements are not required.
The KBX139 lens is designed for use at a wavelength of 589 nm. It is important to note that the performance of the lens can vary depending on the wavelength of the light it is used with. Therefore, it is crucial to ensure that this lens is suitable for your specific application before purchasing.