SLB-25B-25N 25.0 mm Dia. x -24.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -24.7 mm
- BFL
- -25.3 mm
- R1
- -25.9 mm
- R2
- 25.9 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-25B-25N 25.0 mm Dia. x -24.7 mm FL; Double-Concave Lens Uncoated
The SLB-25B-25N is a high-quality double-concave lens offered by OptoSigma, a renowned 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 25.0 mm and a center thickness of 2.0 mm, with the edge thickness measuring 8.4 mm. The effective focal length (EFL) of this lens is -24.7 mm, making it a powerful tool for applications requiring strong negative magnification. The first radius of curvature (R1) is -25.9 mm, while the second radius (R2) is 25.9 mm, indicating a symmetrical double-concave design.
The lens is made from n-BK7 Schott, a popular optical glass known for its excellent optical properties and versatility. The wavelength for this lens is 546.1 nm. The lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements.