SLSQ-25.4B-50N 25.4 mm Dia. x -49.7 mm FL; Double-Concave Lens Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -49.7 mm
- BFL
- -50.4 mm
- R1
- -46 mm
- R2
- 46 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-25.4B-50N 25.4 mm Dia. x -49.7 mm FL; Double-Concave Lens Uncoated
OptoSigma's SLSQ-25.4B-50N is a high-quality, double-concave spherical lens made from fused silica. This lens is uncoated and features a base shape of a circle, with a diameter of 25.4 mm. The lens has a center thickness of 2 mm and an edge thickness of 5.6 mm, providing a robust structure for various applications.
The lens's effective focal length (EFL) is -49.7 mm, indicating its double-concave nature. The first radius of curvature (R1) is -46 mm, while the second radius (R2) is 46 mm, contributing to the lens's overall optical power. The back focal length (BFL) is -50.4 mm, and the lens does not have any inner or outer radii, ensuring a smooth optical path.
This lens is designed to work with a wavelength of 546.1 nm, making it suitable for applications that use this specific wavelength, such as certain types of metrology or scientific research. The lens material is fused silica, which is known for its excellent optical properties, including low auto-fluorescence, high transmittance across a wide spectrum, and high resistance to thermal shock and chemical etching.