SLB-50.8B-50N 50.8 mm Dia. x -49.5 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
- EFL
- -49.5 mm
- BFL
- -50.5 mm
- R1
- -51.9 mm
- R2
- 51.9 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-50N 50.8 mm Dia. x -49.5 mm FL; Double-Concave Lens Uncoated
The SLB-50.8B-50N is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, designed with a base shape of a circle, is fabricated from n-bk7 schott, a material known for its excellent optical properties.
The lens boasts a diameter of 50.8 mm and a thickness at the edge of 16.3 mm. The center thickness is significantly less at 3 mm, contributing to its double-concave design. The effective focal length (EFL) of this lens is -49.5 mm, indicating its converging properties.
The first radius of curvature (R1) is -51.9 mm, while the second radius (R2) is 51.9 mm. These values, combined with the EFL, contribute to the lens's overall optical power. The back focal length (BFL) is -50.5 mm, which is the distance from the lens's rear surface to the image plane in a lens system.
This lens is uncoated, meaning it does not have any anti-reflective or other coatings applied to its surfaces. While this may result in higher reflective losses, it also means the lens can be used in a wider range of applications without the potential for coating-specific limitations.
The lens is designed to work with light of wavelength 546.1 nm, making it suitable for use in a variety of optical systems operating in this region of the spectrum.