SLB-25B-25P 25.0 mm Dia. x 26.5 mm FL; Double-Convex Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 26.5 mm
- BFL
- 23.5 mm
- R1
- 25.95 mm
- R2
- -25.95 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-25P 25.0 mm Dia. x 26.5 mm FL; Double-Convex Lens Uncoated
The SLB-25B-25P is a high-quality double-convex lens, sourced from the reputable vendor OptoSigma. This lens boasts a 25.0 mm diameter and a focal length of 26.5 mm, making it suitable for a wide range of optical applications.
The lens is fabricated from n-BK7 Schott, a popular optical glass due to its excellent optical properties and high transparency in the visible spectrum. The base shape of the lens is circular, and it features a spherical geometry, with radii of curvature of 25.95 mm for the first surface and -25.95 mm for the second surface. This design results in a back focal length of 23.5 mm.
The lens has a thickness of 2 mm at the edge and 8.4 mm at the center, providing robustness and stability. Despite being uncoated, this lens offers good performance at the central wavelength of 546.1 nm. However, for applications requiring higher transmission and reduced surface reflections, coating options are available from the vendor.
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