SLB-25B-60NM 25.0 mm Dia. x -59.7 mm FL; Coated; Double-Concave Lens 400-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -59.7 mm
- BFL
- -60.3 mm
- R1
- -62.28 mm
- R2
- 62.28 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-60NM 25.0 mm Dia. x -59.7 mm FL; Coated; Double-Concave Lens 400-700nm
The SLB-25B-60NM is a high-quality double-concave lens, designed and manufactured by OptoSigma. This lens, with a base shape of a circle, is specifically engineered for use within the wavelength range of 400-700nm, making it suitable for a wide range of optical applications.
The lens has a diameter of 25.0mm and a center thickness of 2.0mm, ensuring a compact and efficient design. The edge thickness is 4.5mm, providing robustness and durability. The effective focal length (EFL) of this lens is -59.7mm, and the back focal length (BFL) is -60.3mm, indicating a strong converging capability.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and chemical durability. The lens surface is coated with Opt M, a broadband anti-reflection coating that enhances transmission and reduces surface reflections, thereby improving overall system performance.
This lens is a spherical lens, which means it has a curved surface with a constant radius of curvature. The first radius of curvature (R1) is -62.28mm, and the second radius of curvature (R2) is 62.28mm, indicating the double-concave nature of the lens.
More Lens
