SLB-20-30N 20.0 mm Dia. x -30.0 mm FL; Plano-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- -30 mm
- BFL
- -31.3 mm
- R1
- -15.57 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-20-30N 20.0 mm Dia. x -30.0 mm FL; Plano-Concave Lens Uncoated
The SLB-20-30N is a Plano-Concave Lens with a 20.0 mm diameter and a focal length of -30.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of n-BK7 Schott material, a popular choice for its high refractive index and low dispersion, making it ideal for a wide range of optical applications.
The lens geometry features a thickness edge of 5.6 mm and a thickness center of 2 mm. The inner and outer radii are both 0 mm, indicating a flat surface on one side and a concave surface on the other. The radius of curvature (R1) is -15.57 mm, and the back focal length (BFL) is -31.3 mm.
The lens is uncoated, which means it does not have any additional layers to enhance its optical properties. This may be suitable for applications where anti-reflection or other coatings are not required.
The lens is in stock and available for immediate purchase. For more information, you can visit the vendor's website using the provided weblink.
