SLB-20-150NM 20.0 mm Dia. x -150.0 mm FL; Coated; Plano-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- -150 mm
- BFL
- -151.3 mm
- R1
- -77.85 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-20-150NM 20.0 mm Dia. x -150.0 mm FL; Coated; Plano-Concave Lens 400-700nm
The SLB-20-150NM is a Plano-Concave Spherical Lens, boasting a diameter of 20.0 mm and a focal length of -150.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made from n-bk7 schott material, a popular choice due to its excellent optical properties.
The lens's geometry is meticulously designed, with a thickness edge of 2.6 mm and a thickness center of 2.0 mm. The inner and outer radii are both zero, indicating a circular shape. The lens's effective focal length (EFL) is -150.3 mm, and the back focal length (BFL) is -151.3 mm, demonstrating its concave nature.
The SLB-20-150NM is coated with Opt M on both the front and back surfaces, enhancing its performance in the 400-700nm wavelength range. This coating ensures high transmission and low reflection, making it suitable for various applications.