SLB-20B-25PM 20.0 mm Dia. x 26.0 mm FL; Coated; Double-Convex Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 26 mm
- BFL
- 24 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-20B-25PM 20.0 mm Dia. x 26.0 mm FL; Coated; Double-Convex Lens 400-700nm
The SLB-20B-25PM is a high-quality double-convex lens, sourced from the reputable vendor OptoSigma. This lens boasts a diameter of 20.0 mm and a focal length of 26.0 mm, making it a versatile choice for a variety of optical applications.
The lens is crafted 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 geometry that includes an inner radius of 0 and an outer radius of 0. The thickness at the edge of the lens is 2 mm, while the thickness at the center is 6 mm. The effective focal length (EFL) is 26 mm, and the back focal length (BFL) is 24 mm.
The SLB-20B-25PM is coated with opt m on both the front and back surfaces. This coating enhances the lens's performance by reducing reflection and increasing transmission, particularly within the wavelength range of 400-700nm. The lens's spherical shape ensures a wide field of view and minimal distortion.