SLB-25-50NIR2 25.0 mm Dia. x -50.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -50 mm
- BFL
- -51.3 mm
- R1
- -25.95 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-25-50NIR2 25.0 mm Dia. x -50.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
The SLB-25-50NIR2 is a Plano-Concave Spherical Lens, 25.0 mm in diameter and featuring a focal length of -50.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is designed to operate within the wavelength range of 750-1550nm, making it suitable for near-infrared applications.
The lens is crafted from n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low auto-fluorescence. This material is widely used in various optical systems due to its superior optical properties. The lens features a Plano surface on one side and a concave surface on the other, with a radius of curvature of -25.95mm.
The lens has a central thickness of 2mm and an edge thickness of 5.2mm, providing robustness and durability. The back focal length (BFL) is -51.3mm, and the lens has no inner or outer radius, indicating a uniform thickness across the lens.
The SLB-25-50NIR2 is coated with Opt IR2, a broadband anti-reflection coating designed for the 750-1550nm range. This coating reduces surface reflections, enhancing the lens's transmission and overall performance in the specified wavelength range.
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