SLB-15B-50NM 15.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 15 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-15B-50NM 15.0 mm Dia. x -49.7 mm FL; Coated; Double-Concave Lens 400-700nm
The SLB-15B-50NM is a high-quality double-concave lens, designed with a base shape of a circle, and a diameter of 15.0 mm. This lens is sourced from OptoSigma, a renowned vendor known for its precision optical components. The lens is designed for use within a wavelength range of 400-700nm, with a central wavelength of 546.1nm, making it suitable for a wide range of optical applications.
The lens features a significant double-concave geometry, with a radius of curvature of -51.9 on the first surface and 51.9 on the second surface. This results in a back focal length of -50.3 and an effective focal length of -49.7. The lens has a thickness of 3.1mm at the edge and 2.0mm at the center, providing a robust structure while maintaining a compact form factor.
The SLB-15B-50NM is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. The lens is coated with Opt M on both the front and back surfaces, enhancing its performance and durability in the specified wavelength range.