SLB-25B-50N 25.0 mm Dia. x -49.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -49.7 mm
- BFL
- -50.3 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-25B-50N 25.0 mm Dia. x -49.7 mm FL; Double-Concave Lens Uncoated
The SLB-25B-50N is a high-quality spherical lens offered by OptoSigma, a leading vendor in the optical industry. This lens, with a base shape of a circle, falls under the category of a Spherical Lens (Concave-Concave) and is uncoated.
The lens has a diameter of 25.0 mm and a thickness at the edge of 5.1 mm. The center thickness is 2.0 mm. The effective focal length (EFL) of this lens is -49.7 mm, indicating its concave nature. The first radius of curvature (R1) is -51.9 mm, and the second radius (R2) is 51.9 mm, which are crucial parameters in understanding the lens's optical properties.
The back focal length (BFL) of this lens is -50.3 mm. The lens is made of n-bk7 schott material, a common choice for its excellent optical properties. The lens is designed to operate at a wavelength of 546.1 nm.
Please note that the lens does not come with any coating, which may affect its performance in certain applications. Always ensure to check the vendor's specifications and recommendations for the best results in your specific use case.