LD2297-A N-SF11 Bi-Concave Lens; Dia:25.4 mm; f=-25.0 mm ARC 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -25 mm
- BFL
- -25.6 mm
- R1
- -39.6 mm
- R2
- 39.6 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
LD2297-A N-SF11 Bi-Concave Lens; Dia:25.4 mm; f=-25.0 mm ARC 350-700nm
The LD2297-A is a high-quality bi-concave lens offered by Thorlabs, a leading vendor in the optical industry. This lens is made from n-SF11 Schott glass, a material known for its excellent optical properties. The lens features a base shape of a circle, with a diameter of 25.4 mm, providing a wide area of focus.
The lens has a center thickness of 3 mm and an edge thickness of 7.2 mm, offering a robust and durable structure. The effective focal length (EFL) of this lens is -25 mm, indicating its concave nature. The front and back surfaces of the lens are coated with ARC 350-700nm coating, enhancing its transmission capabilities within the specified wavelength range.
The lens's geometry includes radii of curvature of -39.6 mm for the first surface and 39.6 mm for the second surface. The back focal length (BFL) is -25.6 mm. The lens is designed to operate at a wavelength of 587.6 nm, making it suitable for a wide range of optical applications.
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