SLSQ-25.4-60N 25.4 mm Dia. x -60.0 mm FL; Plano-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -60 mm
- BFL
- -61.4 mm
- R1
- -27.6 mm
Material
- Name
- Fused Silica
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.460077010624967
- λ
- 546.1 nm
- B1
- 0.6961663
- C1
- 0.00467914825849 μm2
- B2
- 0.4079426
- C2
- 0.013512063073959999 μm2
- B3
- 0.8974794
- C3
- 97.934002537921 μm2
SLSQ-25.4-60N 25.4 mm Dia. x -60.0 mm FL; Plano-Concave Lens Uncoated
The SLSQ-25.4-60N is a plano-concave lens with a diameter of 25.4 mm and a focal length of -60.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of fused silica, a material known for its excellent optical properties, including high transparency and resistance to thermal shock.
The lens geometry is characterized by a thickness of 5.1 mm at the edge and 2.0 mm at the center. The inner and outer radii are both zero, indicating a planar surface on one side and a concave surface on the other. The back focal length is -61.4 mm, slightly longer than the specified focal length due to the thickness of the lens.
This lens is uncoated, meaning it does not have any anti-reflective or other coatings. While this may result in higher reflective losses, it also means that the lens can be used over a broad spectral range, from the ultraviolet to the infrared.
The lens is designed for use at a wavelength of 546.1 nm, which is in the green part of the visible spectrum. However, as mentioned earlier, its uncoated nature allows it to be used over a much wider spectral range.