SLB-20B-40PM 20.0 mm Dia. x 40.7 mm FL; Coated; Double-Convex Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 40.7 mm
- BFL
- 39.3 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-20B-40PM 20.0 mm Dia. x 40.7 mm FL; Coated; Double-Convex Lens 400-700nm
The SLB-20B-40PM is a high-quality double-convex lens offered by OptoSigma, a leading vendor in the optical industry. This lens, with a diameter of 20.0 mm and a focal length of 40.7 mm, is designed for use in the visible light spectrum, specifically between 400-700 nm.
The lens is made from n-bk7 schott, a popular material in the optical industry due to its excellent optical properties. The base shape of the lens is circular, and it features a spherical geometry. The thickness at the edge of the lens is 2.0 mm, while the thickness at the center is 4.4 mm. The effective focal length (EFL) is 40.7 mm, and the back focal length (BFL) is 39.3 mm. The radii of curvature for the first and second surfaces are 41.52 mm and -41.52 mm, respectively.
The SLB-20B-40PM is coated with opt m on both the front and back surfaces, enhancing its performance in the specified wavelength range. This lens is currently in stock and available for immediate purchase, making it an ideal choice for those needing a reliable and efficient optical component.
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