SLB-25.4B-200NIR2 25.4 mm Dia. x -199.7 mm FL; Coated; Double-Concave Lens 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -199.7 mm
- BFL
- -200.4 mm
- R1
- -207.6 mm
- R2
- 207.6 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-25.4B-200NIR2 25.4 mm Dia. x -199.7 mm FL; Coated; Double-Concave Lens 750-1550nm
The SLB-25.4B-200NIR2 is a high-quality double-concave lens, designed and manufactured by OptoSigma. This lens, with a diameter of 25.4 mm, is specifically engineered for use within the wavelength range of 750-1550nm, making it ideal for near-infrared applications.
The lens features a base shape of a circle, with a center thickness of 2mm and an edge thickness of 2.8mm. The effective focal length (EFL) is -199.7mm, indicating its double-concave nature. The first radius of curvature (R1) is -207.6mm, while the second radius (R2) is 207.6mm, further emphasizing its concave design. The back focal length (BFL) is -200.4mm.
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 coating specifically designed for the infrared region, enhancing its performance within its specified wavelength range.
The item data also indicates that this lens is in stock, available for immediate purchase and integration into your optical system. For more detailed information, including pricing and availability, please refer to the provided weblink.