KBC079 50.8 mm Dia. x -150 mm FL; Uncoated; Double-Concave Lens
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- -150 mm
- BFL
- -150.82 mm
- R1
- -155.47 mm
- R2
- 155.47 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
KBC079 50.8 mm Dia. x -150 mm FL; Uncoated; Double-Concave Lens
The KBC079 is a high-quality, double-concave lens offered by MKS/Newport, with a diameter of 50.8 mm and a focal length of -150 mm. This uncoated lens is made of N-BK7 Schott glass, a popular material for its excellent optical properties and high damage threshold. The lens features a base shape of a circle, with a thickness of 5.88 mm at the edge and 2.5 mm at the center.
The KBC079's geometry includes a double-concave design, with radii of curvature of -155.466 mm for the first surface and 155.466 mm for the second surface. This design results in a back focal length of -150.82 mm. The lens's inner and outer radii are both 0, indicating a uniform curvature across the lens surface.
This lens is designed for use at a wavelength of 589 nm. Its spherical shape ensures excellent image quality, making it suitable for a wide range of applications. The uncoated version of this lens is ideal for use in low-light conditions or where high transmission is required.
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