49-523 9.0mm Dia. x -18 FL; NIR I Coated; Plano-Concave Lens 600-1050nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 9 mm
- EFL
- -18 mm
- BFL
- -19.26 mm
- R1
- -14.12 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
49-523 9.0mm Dia. x -18 FL; NIR I Coated; Plano-Concave Lens 600-1050nm
The 49-523 is a 9.0mm diameter Plano-Concave Lens with a focal length of -18, sourced from Edmund Optics. This lens is designed for use within the near-infrared spectrum, specifically between 600-1050nm.
The lens is constructed from n-sf11 Schott, a high-index glass with excellent transmittance in the NIR range. It features a plano-concave geometry, meaning one side is flat while the other is curved inward. This design is often used to correct aberrations in optical systems.
The 49-523 lens has a thickness of 2.89mm at the edge and 2.25mm at the center. The inner radius is 0mm, and the outer radius is also 0mm, indicating a symmetrical curvature. The back focal length (BFL) is -19.26mm.
The lens is coated with Edmund Optics' NIR I standard curve coating on both the front and back surfaces. This coating enhances the lens's performance in the NIR range, improving transmission and reducing reflection.