SLB-25.4B-80N 25.4 mm Dia. x -79.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -79.7 mm
- BFL
- -80.4 mm
- R1
- -83.04 mm
- R2
- 83.04 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-25.4B-80N 25.4 mm Dia. x -79.7 mm FL; Double-Concave Lens Uncoated
The SLB-25.4B-80N is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, designed for use in a wide range of optical systems, features a base shape of a circle and is constructed from n-bk7 schott material, a popular choice for its excellent optical properties.
The lens has a diameter of 25.4 mm and a thickness at the edge of 4 mm, ensuring durability and stability. The center thickness is 2 mm, contributing to its double-concave geometry. The effective focal length (EFL) of this lens is -79.7 mm, making it suitable for applications requiring strong negative dispersion.
The first radius of curvature (R1) is -83.04 mm, while the second radius (R2) is 83.04 mm, both of which contribute to the lens's double-concave shape. The back focal length (BFL) is -80.4 mm, which is the distance from the lens's rear surface to the image plane in a typical optical system.
This lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. The lens is designed to work with a wavelength of 546.1 nm, a common choice for many optical systems.