SLB-25B-35NM 25.0 mm Dia. x -34.7 mm FL; Coated; Double-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -34.7 mm
- BFL
- -35.3 mm
- R1
- -36.33 mm
- R2
- 36.33 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-25B-35NM 25.0 mm Dia. x -34.7 mm FL; Coated; Double-Concave Lens 400-700nm
The SLB-25B-35NM is a high-quality double-concave lens, boasting a diameter of 25.0 mm and a focal length of -34.7 mm. This lens is sourced from OptoSigma, a renowned vendor known for its precision optical components.
The lens is made from n-bk7 schott, a popular material in the optical industry due to its excellent optical properties. It features a base shape of a circle, with a thickness at the edge of 6.4 mm and a center thickness of 2 mm. The lens's effective focal length (EFL) is -34.7 mm, and its back focal length (BFL) is -35.3 mm.
The SLB-25B-35NM 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 ideal for various applications.
The lens's geometry, including its inner and outer radii, is optimized for superior optical performance. The first radius of curvature (R1) is -36.33 mm, while the second radius (R2) is 36.33 mm.