SLB-25B-30NIR2 25.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -29.7 mm
- BFL
- -30.3 mm
- R1
- -31.14 mm
- R2
- 31.14 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-30NIR2 25.0 mm Dia. x -29.7 mm FL; Coated; Double-Concave Lens 750-1550nm
The SLB-25B-30NIR2 is a high-quality double-concave lens, designed and manufactured by OptoSigma. This lens, with a diameter of 25.0 mm, is specifically engineered for use within the wavelength range of 750-1550nm, making it suitable for a variety of applications within the near-infrared spectrum.
The lens features a base shape of a circle, with a center thickness of 2mm and an edge thickness of 7.2mm. The effective focal length (EFL) of this lens is -29.7mm, and it has a back focal length (BFL) of -30.3mm. The first radius of curvature (R1) is -31.14mm, while the second radius of curvature (R2) is 31.14mm. The inner and outer radii are both 0mm, indicating a uniform curvature.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. This lens is coated with Opt IR2, a broadband anti-reflection coating that enhances transmission and reduces surface reflections, ensuring optimal performance.
The SLB-25B-30NIR2 is currently in stock and available for immediate purchase. For more information, including technical specifications and purchasing options, please refer to the vendor's website using the provided weblink.