SLB-15B-20NM 15.0 mm Dia. x -19.7 mm FL; Coated; Double-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- -19.7 mm
- BFL
- -20.3 mm
- R1
- -20.7 mm
- R2
- 20.7 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-20NM 15.0 mm Dia. x -19.7 mm FL; Coated; Double-Concave Lens 400-700nm
The SLB-15B-20NM is a high-quality double-concave lens, 15.0 mm in diameter, designed for use within the wavelength range of 400-700nm. This lens is sourced from the reputable vendor, OptoSigma, and is currently in stock, as indicated by its weblink status.
The lens is made from the renowned material, n-bk7 schott, and features a base shape of a circle. Its geometry includes a thickness edge of 4.8, a thickness center of 2, and an effective focal length (EFL) of -19.7. The first radius of curvature (R1) is -20.7, while the second radius (R2) is 20.7, contributing to its double-concave structure. The back focal length (BFL) is -20.3.
The SLB-15B-20NM is coated with an opt m coating on both the front and back surfaces, enhancing its performance within its specified wavelength range. The lens's shape is spherical, and it is classified as a Spherical Lens (Concave-Concave) under the Sub Type category.
