SLB-15B-40N 15.0 mm Dia. x -39.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- -39.7 mm
- BFL
- -40.3 mm
- R1
- -41.52 mm
- R2
- 41.52 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-15B-40N 15.0 mm Dia. x -39.7 mm FL; Double-Concave Lens Uncoated
The SLB-15B-40N 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 the renowned material n-BK7 Schott, ensuring durability and reliability.
The lens boasts a diameter of 15.0 mm and a thickness at the edge of 3.4 mm, while the center thickness is 2.0 mm. The effective focal length (EFL) is -39.7 mm, indicating a strongly converging lens. The first radius of curvature (R1) is -41.52 mm, and the second radius (R2) is 41.52 mm, demonstrating the double-concave nature of the lens.
The back focal length (BFL) is -40.3 mm, and the lens has no inner or outer radius, indicating a uniform curvature. The lens is designed to operate at a wavelength of 546.1 nm. The shape of the lens is spherical, and it is offered uncoated, providing users with the flexibility to apply their preferred coating based on their specific application requirements.