SLB-40-50NIR2 40.0 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
- 40 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-40-50NIR2 40.0 mm Dia. x -50.0 mm FL; Coated; Plano-Concave Lens 750-1550nm
The SLB-40-50NIR2 is a Plano-Concave Spherical Lens, sourced from the renowned optical component manufacturer, OptoSigma. This lens, with a 40.0 mm diameter and a focal length of -50.0 mm, is designed for use within the wavelength range of 750-1550nm, making it suitable for near-infrared applications.
The lens is fabricated from the high-quality material, n-BK7 Schott, a borosilicate crown glass known for its excellent optical properties, including high transparency and low auto-fluorescence. This material is widely used in various optical systems due to its excellent homogeneity and chemical resistance.
The lens features a plano-concave geometry, meaning one surface is flat (plano), and the other is curved inward (concave). This particular configuration is often used in optical systems to diverge or spread out light beams. The lens has an inner radius of 0 mm and an outer radius of 0 mm, indicating it's a simple, single element lens.
The SLB-40-50NIR2 is coated with Opt IR2, a broadband anti-reflection coating designed for the 750-1550nm wavelength range. This coating reduces surface reflections, thereby increasing transmission and improving overall system performance.