SLB-50.8B-250N 50.8 mm Dia. x -249.5 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- -249.5 mm
- BFL
- -250.5 mm
- R1
- -259.5 mm
- R2
- 259.5 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.518720636186463
- λ
- 546.1 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
SLB-50.8B-250N 50.8 mm Dia. x -249.5 mm FL; Double-Concave Lens Uncoated
The SLB-50.8B-250N is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, with a base shape of a circle, is designed for use in a wide range of optical applications.
The lens has a diameter of 50.8 mm and a thickness at the edge of 5.5 mm, ensuring durability and stability. The center thickness is 3 mm, contributing to its overall compact design. The effective focal length (EFL) of this lens is -249.5 mm, making it suitable for applications requiring strong negative magnification.
The SLB-50.8B-250N is made from n-BK7 Schott, a popular material in the optical industry due to its excellent optical properties. The radii of curvature for this lens are -259.5 mm for the first surface and 259.5 mm for the second surface, which are precisely crafted to ensure high-quality imaging.
The lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. This lens is designed to work with a wavelength of 546.1 nm, a standard yellow-green line in the visible spectrum.
