49-531 20.0mm Dia. x -30 FL; NIR I Coated; Plano-Concave Lens 600-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- -30 mm
- BFL
- -31.96 mm
- R1
- -23.54 mm
Material
- Name
- N-SF11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7847141030246312
- λ
- 587.6 nm
- B1
- 1.73759695
- C1
- 0.013188707 μm2
- B2
- 0.313747346
- C2
- 0.0623068142 μm2
- B3
- 1.89878101
- C3
- 155.23629 μm2
49-531 20.0mm Dia. x -30 FL; NIR I Coated; Plano-Concave Lens 600-1050nm
This is a 20.0mm diameter Plano-Concave Lens, offered by Edmund Optics, with a -30 FL (focal length). It is designed for use within the near-infrared (NIR) spectrum, specifically between 600-1050nm. The lens is made from n-sf11 Schott material, a popular choice for its high refractive index and low dispersion.
The lens features a concave shape with a center thickness of 3.5mm and an edge thickness of 5.39mm. The inner and outer radii are both 0mm, indicating a symmetrical curvature. The lens's base shape is circular, and it has a spherical geometry.
The lens is coated with Edmund Optics' NIR I standard curve on both the front and back surfaces. This coating enhances its performance within the NIR spectrum, improving transmission and reducing reflection. The coating is designed to maintain high performance across the specified wavelength range.
The lens is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink. This lens is ideal for applications that require a concave lens with specific NIR transmission characteristics.