SLB-25B-35N 25.0 mm Dia. x -34.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -34.7 mm
- BFL
- -35.3 mm
- R1
- -36.33 mm
- R2
- 36.33 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-25B-35N 25.0 mm Dia. x -34.7 mm FL; Double-Concave Lens Uncoated
The SLB-25B-35N 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 constructed from n-BK7 Schott, a material known for its excellent optical properties.
The lens features a diameter of 25.0 mm and a thickness at the edge of 6.4 mm. The center thickness is 2 mm, providing a robust structure while maintaining a sleek profile. The effective focal length (EFL) of this lens is -34.7 mm, indicating its double-concave nature.
The first radius of curvature (R1) is -36.33 mm, and the second radius (R2) is 36.33 mm, demonstrating the lens's symmetrical design. The back focal length (BFL) is -35.3 mm, which is crucial when considering the lens's placement in an optical system.
This lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. The lens is designed to work optimally at a wavelength of 546.1 nm.